Tuesday 9 January 2018

Software For Editing Sampled Waveforms

I have talked before, in this blog, about using the excellent Audacity (http://audacity.sourceforge.net) for DSP applications.

When editing sampled data files and viewing them in the time or frequency domain then Audacity can be very powerful.

While Audacity does support some scripting functionality (https://manual.audacityteam.org/man/scripting.html), I often find that Sox (http://sox.sourceforge.net/) applications for pre-conditioning the audio files, extracting a section of audio or shortening a .wav file then I will typically use sox from a script.

On the other hand, if I want to do something more complex such as visually aligning the data in two files then Audacity is much more convenient for a small number of files.

For aligning a larger group of files I would typically do this using a correlator but that is a subject for a future blog post.

Evaluate the Numerix-DSP Libraries : http://www.numerix-dsp.com/eval/.

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