Envelope.delay problem

[rolfdegen]

Hallo TSynth. Nice projekt :) But i have a problem with envelope.delay funktion in exp. envelope. If I set envelope.delay to 6ms and play more notes, the envelope freezes. With 0ms delay, the envelope works without any problems. Envelope.delay from P. Stoffregen has no problems.

Thanks for your help :)

[rolfdegen]

It looks as if the issue is that exp_count doesn't get set in noteOn(). If you trigger a new note exactly as the release phase finishes, so state == STATE_IDLE but an update() hasn't occurred to set exp_count to the delay value, it will have the stale value from the end of the decay phase, which is -2 32, so your delay suddenly becomes very long indeed.

[rolfdegen]

Discussion in the Teensy Forum: https://forum.pjrc.com/index.php?threads/teensy-exponential-envelopes.75646/#post-348080

[rolfdegen]

Result: void AudioEffectEnvelope::noteOn(void) { //__disable_irq(); if(release_forced_count==0) state=STATE_IDLE; switch(state) { case STATE_IDLE: case STATE_IDLE_NEXT: count=delay_count; if(count>0) { state=STATE_DELAY; inc_hires=0; } else { state=STATE_ATTACK; count=attack_count; inc_hires = 0x40000000 / (int32_t)count; } exp_count=((uint32_t)(delay_count))*8; //!!!!FRE as per advise from h4yn0nnym0u5e ysum=0; break; case STATE_DELAY: case STATE_HOLD: case STATE_ATTACK: case STATE_DECAY: case STATE_SUSTAIN: case STATE_SUSTAIN_FAST_CHANGE: case STATE_RELEASE: state=STATE_FORCED; count=release_forced_count; inc_hires=(-mult_hires)/(int32_t)count; case STATE_FORCED: break; default: state=STATE_RELEASE; break; } //__enable_irq(); }