zcross
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Compute zero crossing density.
- Usage
qinterp(x {type, {, sr}})- x
- data vector (signal)
- type
- selects the type of result; 0 <= type <= 3 (default=0)
- sr
- sampling rate in Hz (default=1)
- Result
- The function counts the number of zero crossings z of the function
x[i] = f(i). The returned result is a scalar depending on z and the argument type.
type description result 0 the number of zero crossing z 1 the zero crossing density
(number of zero crossings / second)d = z / (ncol(x) * sr) 2 the average zero crossing frequenzy (in Hz) f = d / 2 3 the average zero crossing periode length (in seconds) t = 1 / f = 2 / d
- See also
- f0ac
