Exemple #1
0
        public Synth(SynthData synthData) : base(synthData.PitchDepth)
        {
            SynthData   = synthData;
            Oscillators = new Oscillator[SynthData.OSCount];

            for (int i = 0; i < SynthData.OSCount; i++)
            {
                Oscillators[i]           = new Oscillator(synthData.PitchDepth);
                Oscillators[i].Amplitude = SynthData.Amplitude;
            }
        }
        static void Main(string[] args)
        {
            //float[] buffer = new float[100];
            AdditiveWaveformGenerator wave     = new AdditiveWaveformGenerator();
            AdditiveWaveformGenerator modWave  = new AdditiveWaveformGenerator();
            AdditiveWaveformGenerator modWave2 = new AdditiveWaveformGenerator();

            wave.Harmonics     = HarmonicPrimitives.GenerateSquareWaveHarmonics(64);
            modWave.Harmonics  = HarmonicPrimitives.GenerateSawWaveHarmonics(64);
            modWave2.Harmonics = HarmonicPrimitives.GenerateSquareWaveHarmonics(32);

            ADSREnvelope pitchEnvelope = new ADSREnvelope();

            pitchEnvelope.InitialValue         = 0; //NoteUtils.GetMidiNoteFrequency(46 + 36);
            pitchEnvelope.PeekValue            = 0; //NoteUtils.GetMidiNoteFrequency(46 + 36);
            pitchEnvelope.AttackTime           = 0F;
            pitchEnvelope.AttackType           = CurveType.Linear;
            pitchEnvelope.AttackCurveHardness  = 2F;
            pitchEnvelope.DecayTime            = 0.095F;
            pitchEnvelope.DecayType            = CurveType.FastStart;
            pitchEnvelope.DecayCurveHardness   = 4F;
            pitchEnvelope.EndValue             = 110F;
            pitchEnvelope.VoidValue            = 110F;
            pitchEnvelope.ReleaseTime          = 0F;
            pitchEnvelope.ReleaseType          = CurveType.SlowStart;
            pitchEnvelope.ReleaseCurveHardness = 2F;
            pitchEnvelope.SustainValue         = 0;//NoteUtils.GetMidiNoteFrequency(46);

            Oscillator osc3 = new Oscillator();

            osc3.PitchSource     = pitchEnvelope;
            osc3.PitchModulators = new ISampleProvider[0];
            osc3.PitchMultiplier = 0.5F;
            osc3.Volume          = 1F;
            osc3.AmplitudeSource = new ConstantSampleValue(1F);
            osc3.WaveformSource  = modWave2;
            osc3.Carrier         = false;

            Oscillator osc2 = new Oscillator();

            osc2.PitchSource     = pitchEnvelope;
            osc2.PitchModulators = new ISampleProvider[0];
            osc2.PitchMultiplier = 0.5F;
            osc2.Volume          = 1F;
            osc2.AmplitudeSource = new ConstantSampleValue(1F);
            osc2.WaveformSource  = modWave;
            osc2.Carrier         = false;

            ADSREnvelope volumeEnvelope = new ADSREnvelope();

            volumeEnvelope.InitialValue         = 0F;
            volumeEnvelope.PeekValue            = 1F;
            volumeEnvelope.AttackTime           = 0F;
            volumeEnvelope.AttackType           = CurveType.Linear;
            volumeEnvelope.AttackCurveHardness  = 2F;
            volumeEnvelope.DecayTime            = 1F;
            volumeEnvelope.DecayType            = CurveType.FastStart;
            volumeEnvelope.DecayCurveHardness   = 4F;
            volumeEnvelope.SustainValue         = 0F;
            volumeEnvelope.EndValue             = 0F;
            volumeEnvelope.VoidValue            = 0F;
            volumeEnvelope.ReleaseTime          = 0F;
            volumeEnvelope.ReleaseType          = CurveType.SlowStart;
            volumeEnvelope.ReleaseCurveHardness = 2F;

            Oscillator osc  = new Oscillator();
            int        note = 57;

            osc.PitchSource     = pitchEnvelope;
            osc.PitchModulators = new ISampleProvider[1] {
                osc2
            };
            //osc.PitchModulators = new ISampleProvider[0];
            osc.PitchMultiplier = 1F;
            osc.Volume          = 1F;
            osc.AmplitudeSource = volumeEnvelope;
            osc.WaveformSource  = wave;

            Waveshaper shaper = new Waveshaper();

            shaper.Input    = osc;
            shaper.Hardness = 5F;

            LowpassFilter filter = new LowpassFilter();

            filter.Input           = shaper;
            filter.CutoffFrequency = 1770;

            StandardOutPlayer player = new StandardOutPlayer();

            player.Input = shaper;

            int samplesPerBufferSize = 2205;

            osc2.AllocateBuffers(samplesPerBufferSize);
            osc3.AllocateBuffers(samplesPerBufferSize);
            osc.AllocateBuffers(samplesPerBufferSize * 2);
            player.Initialize(samplesPerBufferSize);

            player.StartPlayback();

            Stream stdin = Console.OpenStandardInput();

            while (true)
            {
                byte midiNote = (byte)stdin.ReadByte();
                pitchEnvelope.InitialValue     = NoteUtils.GetMidiNoteFrequency(midiNote + 36);
                pitchEnvelope.PeekValue        = NoteUtils.GetMidiNoteFrequency(midiNote + 36);
                pitchEnvelope.SustainValue     = NoteUtils.GetMidiNoteFrequency(midiNote);
                pitchEnvelope.EnvelopeFinished = false;
                player.ResetOffset();
                wave.ResetOffset();
                modWave.ResetOffset();
            }
        }