public override void Run()
{
Channel channel = System.PlaySound(sound, mainGroup, true);
var channelHead = channel.GetDSP(ChannelControlDSPIndex.DspHead);
DspConnection reverbConnection = reverbUnit.AddInput(channelHead, DSPConnectionType.Send);
channel.Paused = false;
do
{
OnUpdate();
System.Update();
reverbConnection.Mix = wetVolume;
mainGroup.Volume = dryVolume;
DrawText("==================================================");
DrawText("Convolution Example.");
DrawText("Copyright (c) Firelight Technologies 2004-2018.");
DrawText("==================================================");
DrawText("Press Up and Down arrows to change dry mix");
DrawText("Press Left and Right Arrows to change wet mix");
DrawText($"Wet mix: {wetVolume}, Dry mix: {dryVolume}");
DrawText("Press Esc to Quit.");
Sleep(50);
}while (!ShouldEndExample);
}
public override void Initialize()
{
base.Initialize();
//In this special case, we want to use stereo output and not worry about
//varying matrix sizes depending on user speaker mode.
System.SetSoftwareFormat(48_000, SpeakerMode.Stereo, 0);
//Initialize FMOD
System.Init(32);
sound = System.CreateSound(MediaPath("drumloop.wav"), Mode.Loop_Normal);
channel = System.PlaySound(sound);
//Create DSP Effects
lowPass = System.CreateDSPByType(DSPType.LowPass);
lowPass.SetParameterFloat(0, 1000f); //Lowpass Cutoff
lowPass.SetParameterFloat(1, 4f); //Lowpass Resonance
highPass = System.CreateDSPByType(DSPType.HighPass);
highPass.SetParameterFloat(0, 4000f); //Highpass Cutoff
highPass.SetParameterFloat(1, 4f); //Highpass Resonance
//Build the DSP Network
///When a sound is played, a subnetwork is set up in the DSP Network which looks like this.
///Wavetable is the drumloop sound, and it feeds its data from the right to left
//[DSPHEAD]<------------[DSPCHANNELMIXER]<------------[CHANNEL HEAD]<------------[WAVETABLE - DRUMLOOP.WAV]
Dsp head, channelMixer;
ChannelGroup masterGroup = System.MasterChannelGroup;
head = masterGroup.GetDSP(ChannelControlDSPIndex.DspHead);
channelMixer = head.GetInput(0).Dsp;
///Now disconnect channel dsp head from the wavetable to look like this.
//[DSPHEAD] [DSPCHANNELMIXER]<------------[CHANNEL HEAD]<------------[WAVETABLE - DRUMLOOP.WAV]
head.DisconnectFrom(channelMixer);
///Now connect the 2 effects to the channel DSP head.
///Store the 2 connections this makes to we can set their matrix later
/*
* [DSPLOWPASS]
* /x
* [DSPHEAD] [DSPCHANNELMIXER]<------------[CHANNEL HEAD]<------------[WAVETABLE - DRUMLOOP.WAV]
* \y
* [DSPHIGHPASS]
*/
DspConnection lowPassConnection, highPassConnection;
lowPassConnection = head.AddInput(lowPass);
highPassConnection = head.AddInput(highPass);
///Now connect the channelMixer to the 2 effects
/*
* [DSPLOWPASS]
* /x \
* [DSPHEAD] [DSPCHANNELMIXER]<------------[CHANNEL HEAD]<------------[WAVETABLE - DRUMLOOP.WAV]
* \y /
* [DSPHIGHPASS]
*/
//Ignore the connections, we don't care about them
lowPass.AddInput(channelMixer);
highPass.AddInput(channelMixer);
//Now the drumloop will be twice as loud, because it is being split into 2, then recombined at the end.
//What we really want is th only feed the head<-lowpass through the left speaker for that effect, and
//head<-highpass to the right speaker for that effect.
//We can do that simply by setting the pan, or speaker matrix of the connections.
/*
* [DSPLOWPASS]
* /x=1,0 \
* [DSPHEAD] [DSPCHANNELMIXER]<------------[CHANNEL HEAD]<------------[WAVETABLE - DRUMLOOP.WAV]
* \y=0,1 /
* [DSPHIGHPASS]
*/
float[] lowPassMatrix = new float[2 * 2] {
1, 0, 0, 0
};
float[] highPassMatrix = new float[2 * 2] {
0, 0, 0, 1
};
//Upgrade the signal coming from the channel mixer from Mono to Stereo. Otherwise the lowpass and highpass will get mono signals.
channelMixer.SetChannelFormat(default, 0, SpeakerMode.Stereo);
