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BPF waveform to audio?

OpenMusic
#1

Hi -

Struggling with this one in OM for some reason.

Does anyone know how to generate audio from a BPF which represents a single cycle of a waveform, please?

Or, how to generate audio from a BPF that represents the waveform of a ‘longer’ sound? - almost like the reverse of snd->bpf or sound-points.

Thanks!

Graham

#2

Hi Graham,

Please can you be more specific?
A bpf can construct any curve. However, this one could not always be compatible as a waveform per se.
It could be used also as a periodic signal (sine, pulse, etc…)
So there are many possibilities depending on what you ask from a BPF to be.

Best
K

#3

Thanks for your help, Karim!

An example waveform as a BPF from which I’d like to generate audio, is this one:
image

We can always ‘loop’ it by duplicating the y points multiple times, so that it has a repeating cycle, and map the x points to a rate somehow(?) that determines its frequency, but I’m not sure what to use to achieve this. Maybe one of the om-chroma smpl- samplers?, or maybe there’s something really simple that I’m not understanding as this is effectively just an amplitude envelope.

Thanks again Karim!

All the best,

Graham

#4

Maybe I’m heading in the right direction wit something like this…?

image
image999×988 96.4 KB

Thanks Karim!

All the best,

Graham

#5

Exactly,

You can use also om2csound with its various tables as bpf.

Best
K

#6

Thank you, Karim!

Graham