Rename `samplesPerFrame` to just `frame`? about pcm-util HOT 3 OPEN

Exactly, usually things with -size suffix, like frameSize etc means size in bytes, and -length means size in units, like samples etc. So frameLength would be kind of conventional, but seems nobody uses that in audio processing, web-audio-api calls it bufferSize. Others call it block, blockSize etc.
frame is easy to type in:

createGenerator(fn, {
    frame: 1024
});

But mb confusing a bit as if it is current frame number. I guess we should leave samplesPerFrame.

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I don't mind being explicit about variable names, having them be as long as you need to describe what you need to.

Do you think it would be confusing without it? I feel like it could be easily mistaken for size in different units like bytes?

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Following latest practices in regl-line2d, pick-by-alias, defined, regl etc. it seems to be very handy to use aliases for property names. samplesPerFrame is really too verbose to remember (getting back to audiojs after 2 months of detour), and length or frameSize are legitimate synonyms, since there is no place for any other meaning but frame length. Very useful to have f as a shortcut for frequency etc., since it does not introduce ambiguity.
So I would suggest using defined(opts.frameSize, opts.length, opts.samplesPerFrame, default) as a pattern for parsing options across components. That really allows for intuitive API.

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