Add low, high pass filters

[rec]

Very crude, just don't play frequencies above or below these values.

[Iyeba-Kallon]

Hiii
I'd love to take a stab at this. I've been working with SciPy signal processing on a similar project so I initially came in thinking DSP filters, but reading your description I understand you want something simpler, just gating frequencies above/below threshold values. Before I dive in, should these be exposed as UI controls the user can adjust in real-time, or more like config values? Happy to follow whatever direction fits the codebase.

[rec]

Hello. How exciting to get this message, thanks so much!

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You will notice I haven't worked on this in a few weeks: but not because I have in the slightest lost interest in this, but because I have another rush job I'm on.

I'll probably be on that for a couple more weeks, but I have tons of spare time to work on this, too, because I am now a gentleman of leisure (i.e. I lost my job. 😬 But we moved two years ago to somewhere very cheap, so it's not an emergency).

To be honest, I wasn't even thinking of doing any DSP for this! My plan was simply to compute a single floating point number depending on the note number, and just scale the amplitude by that scalar, much like EG Bias function on many synths, like the Yamaha FM synthesizers.

The worry about actually computing EQs is that they are quite slow, and right now, we're only using one core for the synthesis. (I have code there to use subprocesses to do the synthesis, but I don't think I finished that and switched over.)

But having EQ in there would be great, too; many people's machines would handle it, or when we go multiprocessor, it will work.

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Now, I know there's some DSP arithmetic issues in what I've already done, specifically the envelopes: I filed an issue here: #12

You can hear it!

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Off for breakfast - let me know how I can help, and thanks again.

[Iyeba-Kallon]

Thank you so much for the warm response and sorry to hear about the job, though "gentleman of leisure" is a great way to frame it 😄 I'll go have a look at #12 right now. Really appreciate you pointing me in a direction, and please don't feel any pressure given everything on your plate. Looking forward to digging in!

[rec]

Pff, I have nothing on my plate except fun. Use my bandwidth!

[rec]

Oh, I have another DSP project that's even more general: https://github.com/rec/recs

I feel a bit lame about it, because I got it to work extremely reliably for my own purposes, and then never released to people.