I’m sure I’m doing something wrong, but could someone hint me, how can I (for example) play out two mixed distorted sine waves using FMOD DSP plugins.
Using FMOD 4.30.4
The code I’m trying to use:
[code:1o6rp288]
FMOD_DSP *dsp1, *dsp2, *dspMix;
FMOD_System_CreateDSPByType(sys, FMOD_DSP_TYPE_OSCILLATOR, &dsp1);
FMOD_System_CreateDSPByType(sys, FMOD_DSP_TYPE_OSCILLATOR, &dsp2);
FMOD_System_CreateDSPByType(sys, FMOD_DSP_TYPE_DISTORTION, &dspMix);
FMOD_DSP_SetParameter(dsp1,1,220);
FMOD_DSP_SetParameter(dsp2,1,880);
FMOD_DSP_AddInput(dspMix,dsp1,0);
FMOD_DSP_AddInput(dspMix,dsp2,0);
FMOD_CHANNEL *channel;
//This:
FMOD_System_PlayDSP(sys,FMOD_CHANNEL_FREE,dspMix,false,&channel);
//Or this:
//FMOD_System_AddDSP(sys,dspMix,0);
[/code:1o6rp288]
Neither PlayDSP or AddDSP work (documentation says "plays a DSP unit object [i:1o6rp288]and its input network[/i:1o6rp288] on a particular channel").
DSP properly works if I PlayDSP the oscillator first, and then AddDSP the distortion filter to it. What am I doing wrong here?
Should I add DSP filters to chain first, and then rearrange their inputs? I have a faint feeling DSP’s need to be in DSP chain for them to actually work
- Black Phoenix asked 8 years ago
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Hm try a blank dsp first, I do what you are saying but add the units to a mixer dsp first.
[code:pp8ss74k]
{
FMOD_DSP_DESCRIPTION dspdesc;
memset(&dspdesc, 0, sizeof(FMOD_DSP_DESCRIPTION));
strcpy(dspdesc.name, "mixer");
result = gSystem->createDSP(&dspdesc, &dspA);
ERRCHECK(result);
}
[/code:pp8ss74k]
- brett answered 8 years ago
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