such as WAVESURFER (/projects/wavesurfer/) and PRAAT. It is designed for bat recordings but would still be useful for other species. The last ones are annotation tools whose function is to allow the annotation of many. All the notes and details of the session and recordings and any screen shots are stored in a local database. A more musicological approach is taken in the Acousmographe 6. In the open source domain both Audacity2 and Sonic Visualiser 3 have sound analysis and annotation capabilities and the CLAM environment 1 allows the rapid development of customized annotation programs. Then CTRL-ALT-L to save the label file and CTRL-Q,N to automatically move on to the next file. originating from speech research are WaveSurfer 13, 8 and Praat1. I have written a 'Bat Recording Manager' program (see ) which will accelerate the process of analysing batches of recordings by going through each file in turn opening it in Audacity and creating the necessary label file, then zooming in on the first 5 seconds so that you can scroll through the rest of the file adding notations. I find that Kaleidoscope is quicker for handling large numbers of small - 5-10 s - files, but Audacity wins for the longer recordings with multiple call instances that are typical from an AudioMoth. You can easily define your own configurations. You can add a label track which allows you to tag regions with annotations and that can be saved alongside the wav file it relates to, although you do have to explicitly name it to match. WaveSurfer comes with a set of ready-to-use pane configurations, for transcription, speech analysis, etc. spoken and written Komi, an endangered language of the Barents Sea region. #Wavesurfer regions annotations license#Some people say it is a bit slow loading a file, but once loaded navigation and zooming in and out is very easy and intuitive. WaveSurfer is provided as open source, under the GPL license with the explicit goal that the speech community jointly will improve and expand its scope and capabilities. This 10 minute YouTube video shows step-by-step basics of annotating in ELAN. Audacity is pretty much as good as anything else you will find, and it is free and (unlike some free software) is continuously being developed and improved.
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