How can I use the 'getSamplesFromMonoWavetableFileStartingAt: length:' message on stereo files?

Question

Hi there,

If the wavetable I want to read from is not mono, how can I tell Kyma to read the left (or first) channel only?

Thanks!

Answer 1

You could use

getInterleavedSamplesFromWavetableFileStartingAt: start length: lth

Interleaved means that it alternates between a sample for the left and a sample for the right channels.  The odd numbered samples are for the left channel.

Comments

thanks!! this is not in the smalltalk appendix: can we have an updated smalltalk appendix?

---

for example: how do I check if the wavetable is mono or interleaved? I want to be able to use both but kyma should detect which message to use automatically. the getMono... message returns nil when it doesn't work, so I could use 'isNil varIfTrue: [samplesFile getInterleaved...].' but maybe there is an easier way?

---

'alien threat.aif' asSamplesFile channels

---

I'm running into the same situation with having a stereo wavetable, and I want to either read only the left or right...where do I put this bit of code if I'm using the oscillator prototype, for example?

---

Hi Will, what is the end result you're going for with the Oscillator?

---

Hi SSC, the end result is world domination. Just kidding. Actually, I'm not using the Oscillator prototype for this sound; I just mentioned it out of curiosity and thought the same idea might apply to other sounds. I'm using the FunctionGenerator/Sample/Multisample prototypes. I've been changing the duration of some impulse responses to 4096 so I can use them as a starting point in the 'impulse drum' sound from the Sound Browser. I realized that a number of the IRs are stereo and that's why I would like to be able to read the left and right separately. When a stereo wavetable is used in the FunctionGenerator is it summed to mono or what happens? Thanks

---

Hi Will, the FunctionGenerator plays stereo files maintaining the left/right separation so it should be good to go. Not limited to 4096 samples duration (any samples file should work). You could set the duration to, for example:

'bassglass.aif' fileDuration s