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News and Revision History

Avisoft-SASLab Pro, version 4.32 (16 June 2004)

  • Introducing a new cross-correlation classification command (Tools/Labels/”Classify labeled sections…” and Analyze/Specials/”Detect and classify waveform events…”) for automated identification of sound events. The classification algorithm is based on a template spectrogram comparison. See the classification report screen shot.
  • A new element separation option in the Automatic Parameter Measurements allows to use separate thresholds for locating the start and the end of an element (which is certainly useful for analyzing bat echolocation calls).
  • Export of labels as ASCII-formatted binary time series data.
  • Improved handling of the Automatic Parameter Measurements command.
  • New Automatic Parameter Measurements option for measuring the locations (time stamps) of minimum and maximum parameters (“Min / Max param. of entire element”,”t”). See example for measuring the locations of min and max peak frequencies).

  • Introducing a new cross-correlation classification command (Tools/Labels/”Classify labeled sections…” and Analyze/Specials/”Detect and classify waveform events…”) for automated identification of sound events. The classification algorithm is based on a template spectrogram comparison. See the classification report screen shot.
  • A new element separation option in the Automatic Parameter Measurements allows to use separate thresholds for locating the start and the end of an element (which is certainly useful for analyzing bat echolocation calls).
  • Export of labels as ASCII-formatted binary time series data.
  • Improved handling of the Automatic Parameter Measurements command.
  • New Automatic Parameter Measurements option for measuring the locations (time stamps) of minimum and maximum parameters (“Min / Max param. of entire element”,”t”). See example for measuring the locations of min and max peak frequencies).

Avisoft-SASLab Pro, version 4.31 (27 April 2004)

  • A new compressing command (Edit/Compress/Remove silent sections) allows to remove silent sections between sound events (e.g. bat calls) automatically. The reduced amount of data can then accelerate the analysis of large sound files. Similarly, it is now possible to automatically create section labels from sound events (Tools/Labels/Create section labels from waveform events).
  • Emulation of frequency division bat detecors for comparing the output signals of time-expansion bat detectrors and frequency division detectors (command File/Specials/Frequency Division Bat Detector Emulation).

  • A new compressing command (Edit/Compress/Remove silent sections) allows to remove silent sections between sound events (e.g. bat calls) automatically. The reduced amount of data can then accelerate the analysis of large sound files. Similarly, it is now possible to automatically create section labels from sound events (Tools/Labels/Create section labels from waveform events).
  • Emulation of frequency division bat detecors for comparing the output signals of time-expansion bat detectrors and frequency division detectors (command File/Specials/Frequency Division Bat Detector Emulation).

UltraSoundGate 116-200 (17 April 2004)

  • Introduction of a complete kit for recording ultrasound in air (see USG 116-200 and the UltraSoundGate advertising flyer). The newly designed condenser microphone and the additional polarization voltage supply circuit that has been added to the UltraSoundGate 116-200 provide superior sound quality for recording bat calls.

  • Introduction of a complete kit for recording ultrasound in air (see USG 116-200 and the UltraSoundGate advertising flyer). The newly designed condenser microphone and the additional polarization voltage supply circuit that has been added to the UltraSoundGate 116-200 provide superior sound quality for recording bat calls.

Avisoft-SASLab Pro, version 4.3 (22 March 2004)

  • The new Pulse Train Analysis command (see example) improves the abilities for the automated analysis of amplitude envelope patterns. Various options help accelerate for instance the temporal analysis of frog calls, grasshopper songs or dolphin clicks. Additionally, simple counting of vocalizations or measuring on-set duration’s as required in drug testing is also available. The new command is available from the menu Analysis/’Pulse Train Analysis…’. A batch process (Tools/Batch processing) allows to process several sound files at once.

  • The new Pulse Train Analysis command (see example) improves the abilities for the automated analysis of amplitude envelope patterns. Various options help accelerate for instance the temporal analysis of frog calls, grasshopper songs or dolphin clicks. Additionally, simple counting of vocalizations or measuring on-set duration’s as required in drug testing is also available. The new command is available from the menu Analysis/’Pulse Train Analysis…’. A batch process (Tools/Batch processing) allows to process several sound files at once.

UltraSoundGate hydrophone accessories (24 January 2004)

  • In order to simplify the operation of hydrophones, two dedicated hydrophone interface boxes are now available (see https://www.avisoft.com/ultrasound-microphones/charge-amplifier/) .
  • A specific envelope tracking option has been added to the Avisoft-RECORDER software for acoustically monitoring cetacean echolocation clicks.

  • In order to simplify the operation of hydrophones, two dedicated hydrophone interface boxes are now available (see https://www.avisoft.com/ultrasound-microphones/charge-amplifier/) .
  • A specific envelope tracking option has been added to the Avisoft-RECORDER software for acoustically monitoring cetacean echolocation clicks.

UltraSoundGate microphones (30 December 2003)

  • Introduction of a new line of externally polarized ultrasound condenser microphones (see the page on Ultrasound microphones). These new microphone options will further enhance the versatility of the UltraSoundGate system.

  • Introduction of a new line of externally polarized ultrasound condenser microphones (see the page on Ultrasound microphones). These new microphone options will further enhance the versatility of the UltraSoundGate system.

Avisoft-RECORDER, version 2.9 (14 August 2003)

  • 32 bit format option for National Instruments DSA devices (NI 44xx) implemented
  • Delay option added to the Playlist feature
  • In the configuration dialog box, a new Copy button allows to copy the settings of one channel to all other active channels

  • 32 bit format option for National Instruments DSA devices (NI 44xx) implemented
  • Delay option added to the Playlist feature
  • In the configuration dialog box, a new Copy button allows to copy the settings of one channel to all other active channels

Avisoft-SASLab Pro, version 4.23 (01 July 2003)

  • New editing commands (Cut & Paste) in the Graphics Synthesizer implemented.
  • An optional Y axis grid in the main window may speed-up the evaluation of sounds.
  • A new section label command allows transferring gate function analysis results into section labels.
  • An additional export parameter option (‘hide y axis’) in the one-dimensional transformation window adds more flexibily.
  • New horizontal cursors in the curve window provide enhanced measurement facilities on the One-dimensional transformation displays.
  • Improved facilities for comparing sound files: A cursor linkage option connects cursors throughout instances of the SASLab software (see example)

  • New editing commands (Cut & Paste) in the Graphics Synthesizer implemented.
  • An optional Y axis grid in the main window may speed-up the evaluation of sounds.
  • A new section label command allows transferring gate function analysis results into section labels.
  • An additional export parameter option (‘hide y axis’) in the one-dimensional transformation window adds more flexibily.
  • New horizontal cursors in the curve window provide enhanced measurement facilities on the One-dimensional transformation displays.
  • Improved facilities for comparing sound files: A cursor linkage option connects cursors throughout instances of the SASLab software (see example)

Avisoft-SASLab Pro, version 4.22 (28 April 2003)

  • A color mapping display showing the magnitude in dB has been added to the spectrogram window (see example)
  • The new spectrogram axis labeling option supports commonly used styles (see example)
  • Import of 24 bit .wav files (automatic normalization to the internal 16 bit format)

  • A color mapping display showing the magnitude in dB has been added to the spectrogram window (see example)
  • The new spectrogram axis labeling option supports commonly used styles (see example)
  • Import of 24 bit .wav files (automatic normalization to the internal 16 bit format)

Avisoft-RECORDER, version 2.8 (25 February 2003)

  • 24 bit recording format added
  • Extended support for multi-channel soundcards

  • 24 bit recording format added
  • Extended support for multi-channel soundcards

UltraSoundGate re-designed (12 February 2003)

  • The UltraSoundGate product family has completely been re-designed for improved performance and additional features (peak level meter; additional sampling rates complying with the audio standard : 96, 192 and 384 kHz; optional phantom feeding (P48) for high-quality condenser microphones; the trigger button is now represented as a standard joystick button)
  • At the same time, the prices of all UltraSoundGate devices have been reduced dramatically. Further educational discounts are also available

  • The UltraSoundGate product family has completely been re-designed for improved performance and additional features (peak level meter; additional sampling rates complying with the audio standard : 96, 192 and 384 kHz; optional phantom feeding (P48) for high-quality condenser microphones; the trigger button is now represented as a standard joystick button)
  • At the same time, the prices of all UltraSoundGate devices have been reduced dramatically. Further educational discounts are also available

Avisoft-SASLab Pro, version 4.2 (09 December 2002)

  • Extended functionality for time-delay-of-arrival measurements (TDOA)
  • New “Magic reticule cursor” mode for measuring sound parameters interactively (see tutorial)

  • Extended functionality for time-delay-of-arrival measurements (TDOA)
  • New “Magic reticule cursor” mode for measuring sound parameters interactively (see tutorial)

Avisoft-RECORDER, version 2.7 (16 August 2002)

  • Acoustic monitoring options for high-speed acquistion cards and soundcards allows listening to inaudible ultrasound signals in real-time (heterodyne or aliasing technique)
  • Real-time frequency measurements can be issued by voice messages through the soundcard (suited for bat surveys)
  • New playback options for immediate playback (echo) of recorded sounds

  • Acoustic monitoring options for high-speed acquistion cards and soundcards allows listening to inaudible ultrasound signals in real-time (heterodyne or aliasing technique)
  • Real-time frequency measurements can be issued by voice messages through the soundcard (suited for bat surveys)
  • New playback options for immediate playback (echo) of recorded sounds

Avisoft-SASLab Pro, version 4.14 (03 June 2002)

  • Improved real-time spectrograph : peak-hold recording level meter, max FFT size increased to 1024, frequency and time measurement cursor and buttons for quicker spectrogram contrast adjustment, the new option “File”/”Save into numbered .wav file and increment” will support quick pre-trigger harddisk recording of sporadic sound events
  • The main-window recording command now provides real-time spectrogram displays
  • The filter bandwidth of spectrograms can be set directly from the Spectrogram Parameters dialog
  • New editing commands: File/Specials/’Insert .wav file’, ‘Append .wav file’, ‘Swap channels’ and special commands for UltraSoundGate Player
  • The Automatic Response option is now available in the standard version at no extra costs and a new option supports multichannel experiments
  • New classification method based on linear discrimination functions (LDA)
  • The recording buffer of the real-time spectrogram can now be captured by pressing a joystick button
  • The new option “File”/”Specials”/”Don’t work on copies of opened .wav files” will accelerate opening large .wav files.

  • Improved real-time spectrograph : peak-hold recording level meter, max FFT size increased to 1024, frequency and time measurement cursor and buttons for quicker spectrogram contrast adjustment, the new option “File”/”Save into numbered .wav file and increment” will support quick pre-trigger harddisk recording of sporadic sound events
  • The main-window recording command now provides real-time spectrogram displays
  • The filter bandwidth of spectrograms can be set directly from the Spectrogram Parameters dialog
  • New editing commands: File/Specials/’Insert .wav file’, ‘Append .wav file’, ‘Swap channels’ and special commands for UltraSoundGate Player
  • The Automatic Response option is now available in the standard version at no extra costs and a new option supports multichannel experiments
  • New classification method based on linear discrimination functions (LDA)
  • The recording buffer of the real-time spectrogram can now be captured by pressing a joystick button
  • The new option “File”/”Specials”/”Don’t work on copies of opened .wav files” will accelerate opening large .wav files.

Avisoft-RECORDER, version 2.61 (19 May 2002)

  • Playback option supporting both soundcards and high-speed data acquisition boads (NI E-series, e.g. DAQCard 6062E and Avisoft UltraSoundGate Player)
  • Play list option for playing several files subsequently
  • Freeze display command for inspecting the real-time display
  • “Track peak frequency” option for real-time frequency measurements

  • Playback option supporting both soundcards and high-speed data acquisition boads (NI E-series, e.g. DAQCard 6062E and Avisoft UltraSoundGate Player)
  • Play list option for playing several files subsequently
  • Freeze display command for inspecting the real-time display
  • “Track peak frequency” option for real-time frequency measurements

Avisoft-RECORDER, version 2.52 (14 March 2002)

  • Optional input from a WAV file for scanning large disk files (this feature may also be used for accelerating the process of finding the best trigger parameter settings)
  • Frequency and time measurement cursor
  • Event files are now saved with high-precision time stamps, enabling sample-precise re-assembling of consecutive files in Avisoft-SASLab ProPro.
  • Maximum spectrogram FFT size is now 1024 points
  • Optional grid in spectrogram and waveform display
  • 8-bit mode implemented for high-speed applications with USG 116 and US416
  • Peak-amplitude display for more precise recording level control

  • Optional input from a WAV file for scanning large disk files (this feature may also be used for accelerating the process of finding the best trigger parameter settings)
  • Frequency and time measurement cursor
  • Event files are now saved with high-precision time stamps, enabling sample-precise re-assembling of consecutive files in Avisoft-SASLab ProPro.
  • Maximum spectrogram FFT size is now 1024 points
  • Optional grid in spectrogram and waveform display
  • 8-bit mode implemented for high-speed applications with USG 116 and US416
  • Peak-amplitude display for more precise recording level control

Avisoft-SASLab Pro, version 4.0 (26 November 2001)

  • Long filename support (up to 256 characters)
  • The FFT length in One-dimensional transformations, cross-correlations and FFT-filters has been extended from 32k to 2 Gsamples
  • New eraser cursor mode for improved editing of spectrograms (Tools/Cursors/Standard eraser cursor) and undo facility
  • New command for removing erased spectrogram structures also from the underlying .wav file (Tools/Remove erased spectrogram sections from waveform). This command will allow you to filter out single disturbance signals or harmonics manually, even if these are inside the frequency range of the signals you are interested in!
  • Several bugs have been fixed

  • Long filename support (up to 256 characters)
  • The FFT length in One-dimensional transformations, cross-correlations and FFT-filters has been extended from 32k to 2 Gsamples
  • New eraser cursor mode for improved editing of spectrograms (Tools/Cursors/Standard eraser cursor) and undo facility
  • New command for removing erased spectrogram structures also from the underlying .wav file (Tools/Remove erased spectrogram sections from waveform). This command will allow you to filter out single disturbance signals or harmonics manually, even if these are inside the frequency range of the signals you are interested in!
  • Several bugs have been fixed

Avisoft-SASLab Pro, version 3.95e (15 October 2001)

  • Soundfile compression option for files with large silent sections between vocalizations (e.g. bat echolocation calls) for better handling and easier measuring of temporal parameters (Command ‘Edit’/’Compress’). Fast switching between compressed and expanded view.
  • New way to input section labels more quickly by left-clicking plus shift key
  • New Browse command for comfortable navigation through sound files.
  • Labels and titles can now be saved directly into .wav files.
  • Event files created by Avisoft-RECORDER (version 2.4 or later) can be re-assembled into larger continuous files for precise temporal measurements (File/Specials/Re-assembling settings…).
  • New Automatic Response option (increment RECORDER file number) for event filtering in Avisoft-RECORDER.
  • New options in the Automatic Parameter Measurements: ‘Location of measurements’/’regular intervals of duration / n’ and ‘Waveform parameters’: root mean square, energy, peak-to-peak amplitude.
  • For more precise Automatic Parameter Measurements in signals with varying amplitudes a new element separation mode with two thresholds has been implemented. For better adjustment, the thresholds can now be modified incrementally by buttons.
  • New option for section labels: Section label grid for more precise temporal investigations
  • The spectrogram window reticule cursor can now be moved by the arrow keys (To enable this new option, the current configuration must be either reset ‘File’/’Configuration’/’Reset’or the appropriate keyboard shortcuts must be defined manually for ‘Tools’/’Cursors’/'(Move reticule cursor by one pixel)’.)

  • Soundfile compression option for files with large silent sections between vocalizations (e.g. bat echolocation calls) for better handling and easier measuring of temporal parameters (Command ‘Edit’/’Compress’). Fast switching between compressed and expanded view.
  • New way to input section labels more quickly by left-clicking plus shift key
  • New Browse command for comfortable navigation through sound files.
  • Labels and titles can now be saved directly into .wav files.
  • Event files created by Avisoft-RECORDER (version 2.4 or later) can be re-assembled into larger continuous files for precise temporal measurements (File/Specials/Re-assembling settings…).
  • New Automatic Response option (increment RECORDER file number) for event filtering in Avisoft-RECORDER.
  • New options in the Automatic Parameter Measurements: ‘Location of measurements’/’regular intervals of duration / n’ and ‘Waveform parameters’: root mean square, energy, peak-to-peak amplitude.
  • For more precise Automatic Parameter Measurements in signals with varying amplitudes a new element separation mode with two thresholds has been implemented. For better adjustment, the thresholds can now be modified incrementally by buttons.
  • New option for section labels: Section label grid for more precise temporal investigations
  • The spectrogram window reticule cursor can now be moved by the arrow keys (To enable this new option, the current configuration must be either reset ‘File’/’Configuration’/’Reset’or the appropriate keyboard shortcuts must be defined manually for ‘Tools’/’Cursors’/'(Move reticule cursor by one pixel)’.)

Avisoft-RECORDER, version 2.3b (19 September 2001)

  • Support for the new Avisoft-UltraSoundGate hardware implemented
  • An additional entropy parameter threshold allows to prevent triggering caused by broad-band disturbance signals (e.g. insect noise when recording bat echolocation calls)
  • Entering text comments into the LOG files is now possible for documentary purposes
  • Multichannel streams can optionally be saved into single multichannel .wav files (in order to ensure the phase relationship between channels)
  • A time program option allows to record (or enable sound-activated recording) according to a pre-defined time table (e.g. for recording each day from 5:00 to 7:30).

  • Support for the new Avisoft-UltraSoundGate hardware implemented
  • An additional entropy parameter threshold allows to prevent triggering caused by broad-band disturbance signals (e.g. insect noise when recording bat echolocation calls)
  • Entering text comments into the LOG files is now possible for documentary purposes
  • Multichannel streams can optionally be saved into single multichannel .wav files (in order to ensure the phase relationship between channels)
  • A time program option allows to record (or enable sound-activated recording) according to a pre-defined time table (e.g. for recording each day from 5:00 to 7:30).

Introducing the UltraSoundGate system (July 2001)

Avisoft-SASLab Pro, version 3.94c (6 July 2001)

  • Support for the new Avisoft-UltraSoundGate hardware implemented
  • New option in the Automatic Parameter Measurements: ‘Delete gaps between detected elements’
  • Improved spectrogram time axis scaling for very high sample rates (>500 kHz)

  • Support for the new Avisoft-UltraSoundGate hardware implemented
  • New option in the Automatic Parameter Measurements: ‘Delete gaps between detected elements’
  • Improved spectrogram time axis scaling for very high sample rates (>500 kHz)

Avisoft-SASLab Pro, version 3.93d (18 April 2001)

  • User-defined keyboard shortcuts and popup menus for easier access to frequently-used commands (Actions/Keyboard Shortcuts and Popup Menu).
  • Noise Reduction command for improving noisy recordings (Edit/Filter/Noise Reduction).
  • Lorenz plot for evaluating temporal patterns of pulse sequences
  • Entropy option added to the Automatic Parameter Measurements
  • Avisoft-RECORDER now supports high-speed data acquisition boards by Data Translation. Additionally, a low-cost version of Avisoft-RECORDER for single-channel applications is available now.

  • User-defined keyboard shortcuts and popup menus for easier access to frequently-used commands (Actions/Keyboard Shortcuts and Popup Menu).
  • Noise Reduction command for improving noisy recordings (Edit/Filter/Noise Reduction).
  • Lorenz plot for evaluating temporal patterns of pulse sequences
  • Entropy option added to the Automatic Parameter Measurements
  • Avisoft-RECORDER now supports high-speed data acquisition boards by Data Translation. Additionally, a low-cost version of Avisoft-RECORDER for single-channel applications is available now.

Avisoft-SASLab Pro, version 3.92 (12 January 2001)

  • User-defined keyboard shortcuts and popup menus for easier access to frequently-used commands (Actions/Keyboard Shortcuts and Popup Menu).
  • Noise Reduction command for improving noisy recordings (Edit/Filter/Noise Reduction).
  • Lorenz plot for evaluating temporal patterns of pulse sequences
  • Entropy option added to the Automatic Parameter Measurements
  • Avisoft-RECORDER now supports high-speed data acquisition boards by Data Translation. Additionally, a low-cost version of Avisoft-RECORDER for single-channel applications is available now.

  • User-defined keyboard shortcuts and popup menus for easier access to frequently-used commands (Actions/Keyboard Shortcuts and Popup Menu).
  • Noise Reduction command for improving noisy recordings (Edit/Filter/Noise Reduction).
  • Lorenz plot for evaluating temporal patterns of pulse sequences
  • Entropy option added to the Automatic Parameter Measurements
  • Avisoft-RECORDER now supports high-speed data acquisition boards by Data Translation. Additionally, a low-cost version of Avisoft-RECORDER for single-channel applications is available now.

Avisoft-SASLab Pro, version 3.91 (25 November 2000)

  • Fundamental frequency option added to the Automatic Parameter Measurements
  • An autogain option in the spectrogram display parameter dialog box provides optimal usage of color tables
  • Avisoft-RECORDER, version 2.0 now supports sampling rates up to 500kHz with various high-speed data acquisition boards (National Instruments, ComputerBoards, ines)

  • Fundamental frequency option added to the Automatic Parameter Measurements
  • An autogain option in the spectrogram display parameter dialog box provides optimal usage of color tables
  • Avisoft-RECORDER, version 2.0 now supports sampling rates up to 500kHz with various high-speed data acquisition boards (National Instruments, ComputerBoards, ines)

Avisoft-SASLab Pro, version 3.9d (23 October 2000)

  • The commands Change Volume, Time Domain IIR and FIR filter can now be applied to stereo or multichannel files. Processing of both single channels or all channels of a multichannel file is supported.
  • Optional axis titles now support more common graphic formats for one-dimensional transformations (see example)
  • 3D Spectrogram (see example)
  • 2D and 3D Scatterplots showing the distribution of Automatic Parameter Measurements are now available in order to support choosing class boundaries and exploring dependencies between parameters. (see example)
  • Optional Automatic Response facility supports automated playback experiments. The event classes determined by the Automatic Parameter Measurements can be connected to pre-recorded .wav files or different echo modes (filter, resynthesis for frequency shift and modulation). (see also)
  • Real-time classification facility combines the Real-Time Spectrograph with the Automatic Parameter Measurements
  • New HTML log file format allows to inspect measurements directly from a WEB browser.

  • The commands Change Volume, Time Domain IIR and FIR filter can now be applied to stereo or multichannel files. Processing of both single channels or all channels of a multichannel file is supported.
  • Optional axis titles now support more common graphic formats for one-dimensional transformations (see example)
  • 3D Spectrogram (see example)
  • 2D and 3D Scatterplots showing the distribution of Automatic Parameter Measurements are now available in order to support choosing class boundaries and exploring dependencies between parameters. (see example)
  • Optional Automatic Response facility supports automated playback experiments. The event classes determined by the Automatic Parameter Measurements can be connected to pre-recorded .wav files or different echo modes (filter, resynthesis for frequency shift and modulation). (see also)
  • Real-time classification facility combines the Real-Time Spectrograph with the Automatic Parameter Measurements
  • New HTML log file format allows to inspect measurements directly from a WEB browser.

Avisoft-SASLab Pro, version 3.84 (October 2000)

  • A new peak frequency detection algorithm supports measurement precisions beyond the spectrum/spectrogram resolution
  • Automatic Parameter Measurements extended: sub-element counting for analysis of phrases, measuring the distance from start to maximum, derived element-based parameters for measuring the extend of frequency modulation (upward or downward, rising velocity).
  • New Save/Load command in the Classification Settings dialog in order to simplify the handling of classification settings.
  • Avisoft-CORRELATOR now supports aligned averaging of spectrograms previously saved in SASLab Pro from ‘File’/’Save spectrogram…’. Averaged spectrograms can be opened in SASLab from ‘Analyze’/’Open spectrogram…’
  • Configuration file handling improved.
  • New format options for section labels: layer1 | layer2 |layer3 | total, which support hierarchic or overlapped labels.
  • Label input and editing in the spectrum view
  • New options ‘Actions’/’On program start’, which automate some common commands.
  • Graphic Synthesizer / ‘Scan Spectrogram’: Accuracy of the fundamental frequency extraction improved, occasional bug fixed, optional static sample point reduction for regular spaced measurements of peak frequency and peak amplitude.

  • A new peak frequency detection algorithm supports measurement precisions beyond the spectrum/spectrogram resolution
  • Automatic Parameter Measurements extended: sub-element counting for analysis of phrases, measuring the distance from start to maximum, derived element-based parameters for measuring the extend of frequency modulation (upward or downward, rising velocity).
  • New Save/Load command in the Classification Settings dialog in order to simplify the handling of classification settings.
  • Avisoft-CORRELATOR now supports aligned averaging of spectrograms previously saved in SASLab Pro from ‘File’/’Save spectrogram…’. Averaged spectrograms can be opened in SASLab from ‘Analyze’/’Open spectrogram…’
  • Configuration file handling improved.
  • New format options for section labels: layer1 | layer2 |layer3 | total, which support hierarchic or overlapped labels.
  • Label input and editing in the spectrum view
  • New options ‘Actions’/’On program start’, which automate some common commands.
  • Graphic Synthesizer / ‘Scan Spectrogram’: Accuracy of the fundamental frequency extraction improved, occasional bug fixed, optional static sample point reduction for regular spaced measurements of peak frequency and peak amplitude.

Avisoft-SASLab Pro, version 3.83 (September 2000)

  • Statistics options added to the Automatic Parameter Measurements: minimum, maximum, mean, median, standard deviation and histogram display.
  • Interactive element separation added to the Automatic Parameter Measurements. Section labels can now be used to measure noisy elements, which can not be recognized automatically.
  • The results of the automatic element separation can now be used to save the detected elements into separated numbered .wav files and can also be used to automatically create section labels.

  • Statistics options added to the Automatic Parameter Measurements: minimum, maximum, mean, median, standard deviation and histogram display.
  • Interactive element separation added to the Automatic Parameter Measurements. Section labels can now be used to measure noisy elements, which can not be recognized automatically.
  • The results of the automatic element separation can now be used to save the detected elements into separated numbered .wav files and can also be used to automatically create section labels.

Avisoft-SASLab Pro, version 3.82 (August 2000)

  • Classification facility added to the Automatic Parameter Measurements. This new option may be either used for automatic species recognition or note type classification.
  • New option in the real-time spectrograph automatic recording facility: Save all events into a single file
  • Adjustable vertical size of the additional spectrogram information along the time axis

  • Classification facility added to the Automatic Parameter Measurements. This new option may be either used for automatic species recognition or note type classification.
  • New option in the real-time spectrograph automatic recording facility: Save all events into a single file
  • Adjustable vertical size of the additional spectrogram information along the time axis

Avisoft-SASLab Pro, version 3.81 (July 2000)

  • Real-time spectrogram display improved: overlap, y-scale enlargement, down-sampling for low frequency signal analysis, recording level display, overload flag, unlimited streaming into WAV file
  • Spectrum level scaling for power spectrum display to the One-dimensional Transformation menu added
  • Zero-crossing analysis option to the One-dimensional Transformation menu added
  • New “File”/”Shred into numbered files” command for cutting of long sound files.
  • New “Tools”/”Zoom out time axis” command for better navigation in long and high-resolution spectrograms.

  • Real-time spectrogram display improved: overlap, y-scale enlargement, down-sampling for low frequency signal analysis, recording level display, overload flag, unlimited streaming into WAV file
  • Spectrum level scaling for power spectrum display to the One-dimensional Transformation menu added
  • Zero-crossing analysis option to the One-dimensional Transformation menu added
  • New “File”/”Shred into numbered files” command for cutting of long sound files.
  • New “Tools”/”Zoom out time axis” command for better navigation in long and high-resolution spectrograms.

Avisoft-SASLab Pro, version 3.8 (April 2000)

  • Labeling facility for displaying single point and time section labels (see spectrogram with labels)
  • High resolution scaling ticks in spectrograms
  • Title option in waveform and spectrogram output
  • Graphic editing of amplitude envelope files (.at) and userdefined frequency response files (.flf) in FIR and FFT filters.
  • Stereo->Mono command improved

  • Labeling facility for displaying single point and time section labels (see spectrogram with labels)
  • High resolution scaling ticks in spectrograms
  • Title option in waveform and spectrogram output
  • Graphic editing of amplitude envelope files (.at) and userdefined frequency response files (.flf) in FIR and FFT filters.
  • Stereo->Mono command improved