help reseting the phase of sine

[francis1661]

hi there, posting for the first time so nice to meet you all!
i have a question regarding reseting the phase of the sine object from the audio lib, im pretty much new to the teensy so i ask for your kind forgiveness if i ask obvious / stupied stuff ,
im attempting to set the phase of sine to 0 upon midi note receive,

AudioNoInterrupts();
sine1.amplitude(amp_env_exp);
 sine1.frequency(200*pitch_env_exp+60); 
  sine1.phase(sphase);   
      AudioInterrupts();

whereas (sphase) is basically 0 which is sent to the object everytime midi note 60 is received

this resides in a loop and the outcome is a saw wave because i assume that im doing something wrong and the phase resets everytime the loop is executed

how could i "tell" the phase to reset to 0 momentarily when the midi note is received and proceed from there?

thank you very much!

 

[UHF]

Hello, if you want to reset to the start (0 degrees phase) you'll probably need to modify the AudioSynthWaveformSine object (synth_sine.h and synth_sine.cpp) because I believe, setting phase(0) doesn't work like this. Have a look at the sync() function I wrote in a modified version of AudioSynthWaveformMod, it resets the phase_accumulator when the sync function is called, I use it to retrigger LFOs when they receive note on messages:

https://github.com/ElectroTechnique/TSynth/blob/master/Modified Libraries/synth_waveform.h
https://github.com/ElectroTechnique/TSynth/blob/master/Modified%20Libraries/synth_waveform.cpp

 

[francis1661]

@UHF for some reason i cant see my other reply so thank you very much! just to make sure, i call it using "waveform1.sync();" when ever i want and it should restart the phase?

thanks again!

 

[UHF]

Yes that's correct.

 

[BrianM]

I had trouble with this also but lucky a helpful user pointed me to this thread.
So it appears phase() doesn't work?