SonoBat 3.1 and 3.2
Faster processing, smarter call discrimination and call trending

Faster loading of SonoBatch jobs.

Faster SonoBatching (click view batch button to see, but slow processing, click again to hide again)

SonoBatch now prepares a separate BatchClassify sheet for each directory in the job, in addition to a composite sheet for the entire job.

Simply organize each set of files for which you would like a separate output (e.g., by night or by site) into a separate directory (i.e., folder), all contained within a folder that you drop into the SonoBatch panel. If you build up the job from separate folders in separate locations, SonoBatch will leave output sheets at the same directory level as those folders.

SonoBatch now also prepares separate BatchSummary sheets for each directory in the job, in addition to a composite sheet for the entire job. The BatchSummary sheets display tally counts for HiF/LoF passes, total passes, and tally counts for all species, and a presence likelihood calculation for each species in the classifier:

Estimated Likelihood. SonoBat will calculate an estimated likelihood of presence for each species known to the classifier based on the number of classified species and their known overlap and ambiguity of classification. The likelihood estimate provides a probabilistic estimate and does not convey certainty. Please refer to the SonoBat Classification Notes documents for your region for additional information and interpretation of bat acoustic data.

Note that manual vetting of recordings by knowledgeable users may enable species presence confirmation from even single files having distinctive characteristics, despite a low calculated likelihood. Large data sets will numerically favor a probabilistic outcome of likelihood for some undeserving species.

New Batch Summarizer utility lets you process summary sheets with likelihood calculations from your previous SonoBatch output sheets. See the Help message in the utility for input file requirements.

SonoBat 3.1 continue2 the development of SonoBat with the addition of numerous minor enhancements. Most notably, SonoBat 3.1 can better discriminate weaker call content and calls buried in background noise, and better determine call trends of weaker calls. More examples of intelligent call processing here, and detailed guidance for working with Wildlife Acoustics detectors here.

real time sonogram of distant red bat call sequence
  Real time sonogram of distant red bat call sequence. The strongest calls are barely discernable above the background noise content, and no calls rise above the background signal level of the waveform oscillogram trace (lower green trace).  

sonogram of the same distant red bat call sequence in compressed view processed using the discrimination algorithm of SonoBat v3.06 and earlier

Sonogram of the same distant red bat call sequence in SonoBat compressed view processed using the call discrimination algorithm of SonoBat v3.06 and earlier.


Out of range red bat sequence processed with SonBat version 3.1.

Sonogram of the same distant red bat call sequence in compressed view processed using the more robust call discrimination algorithm of SonoBat v3.1. SonoBat v3.1 found calls not even visible in the sonogram of the entire sequence (top image). Although SonoBat would likely reject many of these weak calls for data analysis*, they nonetheless display for manual inspection and interpretation of the sequence. SonoBat v3.1 nevertheless recognized this as a bat sequence that it would write to the SonoBatch automated output as a high frequency bat tally, as indicated by the "HiF" designation.

For rudimentary tallying of bat passes, SonoBat separates bat species into low and high frequency acoustic clades.

* Depending on user-defined acceptance thresholds.

Standard view processed call showing indicators of rejected classification.

Standard view sonogram of call with a rejection of its classification result. SonoBat v3.1 displays explanatory indicators of the rejection logic (red text).


Additional updates in SonoBat v3.1 since the original SonoBat 3 release:

Full Windows 7 compatibility.

• Improved discrimination of calls, independent of noise and frequency band.

• Improved automated standard view length selection of calls, independent of noise and frequency band.

• Improved call trending analysis of low power calls, and recognition of poor trends for rejection.

• Improved the classification acceptance logic for outputting LoF/HiF bats for tallying bat passes. (Note: SonoBat distinguishes LoF/HiF bats not by a strict frequency designation, but by Northeast or Northwest acoustic clades.

• Added a new preference contol to separately designate the acceptable call quality threshold for tallying bat passes.
                              Preference setting for acceptable call quality for tallying bat passes.

• Improved support and integration with Wildlife Acoustics detectors by adding preference setting to make SonoBat "SM2 aware" to automatically adjust processing algorithms to optimize interpretation of recordings from Wildlife Acoustics SM2 and EM3 detectors. See detailed guidance here for SM2 and EM3 detectors.
                                Preference control buttion for making SonoBat aware of data from SM2 and EM3 detectors.

• Autoclassify limitation of # calls processed based on acceptable call quality threshold for tallying bat passes, see note above (speeds batch processing).

• Added additional columns to the SonoBatch spreadsheet output that document the SonoBat version no. and other pertinent settings used during the batch run.
Additional SonoBatch columns.

• Fixed a limitation that rendered alias harmonics on sonograms of some high sample rate file formats.

• Fixed a limitation that rendered files unreadable if the attributed note included the word "data."

• Improved acceptance rate of calls by reducing some noise and distortion effects.

• Enabled changes made in preference settings to activate without relaunching SonoBat, e.g., changing the upper frequency scale on the sonogram display.

• Added option to cancel and stop a SonoBatch run using the SonoBatch button.

• Added additional 15 kHz cutoff filter option.

• Added interpretation option for TE=15x recordings.

Updates to SonoBat Utilities

Complete list and guidance for using SonoBat utilities.

•The SonoBat Scrubber utility has improved selection logic, speed, and now accepts batch jobs. You can populate a job list by adding individual files, folders of files, or folders of folders of files, then let the Sono-Elves do the work for you. You can check on their work with a progress bar on the Scrubber panel.

•  The SonoBat Scrubber now has a filter option to eliminate consideration of any signal content less than 20 kHz- handy for eastern North America mobile transect work where or other situations without need to consider audible frequency bats.

Attributers now offer a choice of time formats for filenaming scheme, or YYYYMMDD_hhmmss format. The latter offers a better choice for alpha sorting of files

New Attributer for Wildlife Acoustics SM2 and EM3 detectors that incorporates frequency filters provided by Wildlife Acoustics.

• The SonoBat D500x Attributer now reads the time stamp embedded in the raw D500x data files. This enables transfer of D500x files before attributing without forfeiting the file creation time data.  This utility also removes the artifact signal spikes at the start of files that come from Pettersson data format that embeds file attribute data in the wave section of the file


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