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# vco() - Signal Processing

### Syntax

### Example

### Output / Return Value

### Limitations

### Alternatives / See Also

### Reference

y = vco(x,fc,fs) creates a signal that oscillates at a frequency determined by the real input vector or array x with sampling frequency fs. fc is the carrier or reference frequency; when x is 0, y is an fc Hz cosine with amplitude 1 sampled at fs Hz. x ranges from -1 to 1, where x = -1 corresponds to 0 frequency output, x = 0 corresponds to fc, and x = 1 corresponds to 2*fc. Output y is the same size as x.y = vco(x,[Fmin Fmax],fs) scales the frequency modulation range so that ±1 values of x yield oscillations of Fmin Hz and Fmax Hz respectively. For best results, Fmin and Fmax should be in the range 0 to fs/2.By default, fs is 1 and fc is fs/4.If x is a matrix, vco produces a matrix whose columns oscillate according to the columns of x.

y = vco(x,fc,fs)y = vco(x,[Fmin Fmax],fs)

X outside of range [-1,1].