Documentation
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Index ¶
Constants ¶
const ( NoteC uint8 = 0 NoteCisz uint8 = 1 NoteDesz uint8 = 1 NoteD uint8 = 2 NoteDisz uint8 = 3 NoteEsz uint8 = 3 NoteE uint8 = 4 NoteF uint8 = 5 NoteFisz uint8 = 6 NoteGesz uint8 = 6 NoteG uint8 = 7 NoteGisz uint8 = 8 NoteAsz uint8 = 8 NoteA uint8 = 9 NoteAisz uint8 = 10 NoteB uint8 = 10 NoteH uint8 = 11 )
Variables ¶
This section is empty.
Functions ¶
func GenerateFreqTableBasedOn ¶
func GenerateFreqTableBasedOn(freqOfA4 float64)
GenerateFreqTableBasedOn generates a 12 note LUT based on an arbitrary frequency in Hz used as the A note of the 4th octave. Can't use the LUT before this. This value changed a lot throughout history. Also, some instruments are tuned differently - currently only 1 LUT is supported. Use GetFreqOf to get the frequency of a note.
Types ¶
type OscGeneratorType ¶
type OscGeneratorType uint
const ( OscTypeWave OscGeneratorType = iota OscTypePulse OscTypeNoise )
type Oscillator ¶
type Oscillator struct {
Wave *generator.FunctionGenerator
Pulse *generator.Generator //TODO
Noise *generator.NoiseGenerator
Frequency float64
FrequencyMod generator.Generator // modulates Frequency
Volume float64
VolumeMod generator.Generator // modulates Volume
Envelope *modulator.ADSR
UseEnvelope bool // turn on the envelope
// contains filtered or unexported fields
}
TODO: extract delay, so GetNextSample don't need to modify the object
func NewOscillator ¶
func NewOscillator(sampleRate uint) *Oscillator
NewOscillator creates a new oscillator which has a function generator, an optional envelope, a starting volume and frequency value with modulation options. The sample rate is in Hz and can't be changed later.
func (*Oscillator) GetNextSample ¶
func (osc *Oscillator) GetNextSample() float64
GetNextSample returns the next sample using the set oscillator state.
func (Oscillator) GetSampleRate ¶
func (osc Oscillator) GetSampleRate() uint
GetSampleRate returns the sample rate with which the oscillator was created.
func (*Oscillator) Reset ¶
func (osc *Oscillator) Reset()
Reset resets ALL the oscillator values to their default.
func (*Oscillator) SetDelay ¶
func (osc *Oscillator) SetDelay(durationMS uint)
SetDelay sets a delay in milliseconds for the oscillator start.
func (*Oscillator) SwitchGeneratorType ¶
func (osc *Oscillator) SwitchGeneratorType(oscType OscGeneratorType)
SwitchGeneratorType will instantly switch to another type of function generator. Won't change any values for them.
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