VCO

VCO - Voltage controlled oscillator. Produces a sinusoid of frequency based on the amplitude of the input. See VCO (complex) for a complex sinusoidal output.

input: float stream of control voltages;

output: float oscillator output

Parameters

 * Sample Rate
 * sampling rate (Hz)


 * Sensitivity
 * units are radians/sec/volt


 * Amplitude
 * output amplitude

Example Flowgraph
This flowgraph can be found at



For this flowgraph, the standard RTTY tones of 2295 (mark) and 2125 (space) are generated. The calculations for this follow:


 * Choosing a full-scale frequency of 2500Hz with an input of +1, the VCO Sensitivity = (2 * math.pi * 2500 / 1) = 15708
 * The space frequency of 2125 is created by vco_offset = (2125 / 2500) = 0.850 volts
 * The mark frequency of 2295 is created by a vector of (1 * 0.068) + 0.850 = 0.918 volts

See Sample_Rate_Tutorial for a discussion of the timing involved in a similar flowgraph.

Source Files

 * C++ files
 * TODO


 * Header files
 * TODO


 * Public header files
 * TODO


 * Block definition
 * TODO