Providing frequency for playback instead of notename/noteNumber about smplr HOT 5 CLOSED

It was a bug. Should be fixed in latest version.

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Hi, this is a sampler based instrument, so you can only pitch the sounds by altering the speed (aka: detune). The only option is to calculate the detune for each note. The idea is to convert a frequency to midi (with decimals) and then select the integer part to choose the note and the float part to detune.

Given this freqToMidi function (taken from tonal):

function freqToMidi(freq: number): number {
  const v = (12 * (Math.log(freq) - Math.log(440)) / Math.log(2) + 69;
  return Math.round(v * 100) / 100;
}

If you want to play a sample a 360Hz then:

freqToMidi(360); => 65.53
instrument.start({ note: 65, detune: 53 });

Hope it helps

from smplr.

Hi, this is a sampler based instrument, so you can only pitch the sounds by altering the speed (aka: detune). The only option is to calculate the detune for each note. The idea is to convert a frequency to midi (with decimals) and then select the integer part to choose the note and the float part to detune.

Given this freqToMidi function (taken from tonal):

function freqToMidi(freq: number): number {
  const v = (12 * (Math.log(freq) - Math.log(440)) / Math.log(2) + 69;
  return Math.round(v * 100) / 100;
}

If you want to play a sample a 360Hz then:

freqToMidi(360); => 65.53
instrument.start({ note: 65, detune: 53 });

Hope it helps

This was helpful, thank you

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@danigb I do have a followup question,
Playback works in terms of instrument.start. Any known reason why the detune property wouldn't affect the tone?
I tried it when first setting up the instrument via new Soundfont, and I tried changing it when calling instrument.start(), however the pitch remains the same.
Any ideas?

Thank you

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It was a bug. Should be fixed in latest version.

@danigb , It is fixed when using it in instrument.start({ detune: ...}), however, using detune in

new Soundfont(audioCtx, { detune: ...})

Doesn't have an effect it seems.

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