Component: Quadrature Generator (DSP Inputs)

Author	Matrix Ltd
Version	1.2
Category	DSP Inputs

Quadrature Generator component

A quadrature generator allowing the generation of two waves Q and I which are b default 90 degrees out of phase from each other. Useful in modulating data.

Component Source Code

Please click here to download the component source project: FC_Comp_Source_DSP_Quadrature.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_DSP_Quadrature.fcfx

Detailed description

No detailed description exists yet for this component

Examples

No additional examples

Macro reference

Generate

	Generate
Assigns a single value to the specified buffer from the selected waveform data. Each call will read the next value from the waveform and will wrap correctly at the end of the data period.
- VOID	Return

GenerateArray

	GenerateArray
Fills the output buffer with the selected waveform data. If the buffer is smaller or larger then the waveform data period then the data passed will follow on correctly for subsequent cycles.
- VOID	Return

GetOffset

	GetOffset
Gets the current phase of the wave as an index from 0 to Num Samples.
- UINT	Return

ModifyAmplitude

	ModifyAmplitude
Allows the amplitude to be adjusted by applying a scaler to the waveform data.
- FLOAT	Scaler
1.0 = 100% Default / 0.5 = 50% / 2.0 = 200%
- VOID	Return

ModifyFrequency

	ModifyFrequency
Sets the frequency output rate by altering the period offset to a new value.
- FLOAT	OffsetRate
0.2=F/5 0.5=F/2 1.0=F 1.5=F*1.5 2.0=F*2
- VOID	Return

ModifyPhaseOffset

	ModifyPhaseOffset
Shifts the output phase by the specified absolute angle in degrees.
- FLOAT	PhaseOffset
Phase offset in degrees
- BOOL	Absolute
0=Relative offset to current o/p 1=Absolute offset to initial o/p
- VOID	Return

SetOffset

	SetOffset
Sets the current phase of the wave as an index from 0 to Num Samples.
- UINT	Offset
Current sample of the wave: range 0 to num samples - 1
- VOID	Return

Property reference

	Properties
	Buffer Size
Number of individual elements the buffer can store, default 1.
	Buffer Type
Sets the buffer data type.
	Waveform
	Amplitude
Waveform amplitude or volume
	Offset
Waveform DC offset
	Calculate Data
Yes = Allows Sine, Cosine, Noise data to be generated on the fly using a calculation, provides much better resolution at the cost of processing performance. No = Allows Sine, Cosine, Noise data to be generated ahead of run time, provides fixed resolution output but is fast and efficient to generate.
	Samples
Waveform sample count, the number of data points in the stored cyclic wave look up table.
	Start Phase Angle
Waveform phase, the angle in degrees or sample in the wave to start streaming from
	Data
The raw waveform data
	Period Offset
The initial amount that the index increments through the LUT data when reading the stored waveform. 0.2 = Frequency / 5 0.5 = Frequency / 2 1.0 = Original Frequency 1.5 = Frequency * 1.5 2.0 = Frequency * 2
	Sample Period
Degrees per default sample offset period
	Frequency Calculation - Reference Only
	Sample Rate (hz)
Allows the sample rate to be entered to allow some basic calculations
	Period (s)
The length of time in seconds that the wave period will cover at the specified sample rate
	Frequency (hz)
The repeat frequency of the wave at the specified sample rate