Hi. For the next rounds of sponsored internships, I would like to propose the following project, that I would mentor:
A music-like audio lavfi source for testing purposes. That means a deterministic pseudo-random stream of notes with varied frequencies, with a structure that looks like music and would trigger the same pathways in filters and codecs. It would be based on asrc_sine, which already has a fast bit-exact sinusoidal signal generator. On top of that, the filter would change the frequency randomly to make notes according to a tempo, preferably by following harmony rules, and would shape the note with an envelope and harmonics. As qualification tasks, I can propose: - make a "musicalscale" filter source that outputs the audible spectrum of notes in sequence; - make a filter source that sounds like a percussion instrument hit repeatedly at a regular interval. What do you think of it, in terms of usefulness and difficulty? Regards, -- Nicolas George
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