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FrequencyShift Operator; Shift the spectrum of an audio signal x by y Hz
Notes

 This is equivalent to z=movespec(x,y) or z=x.movespec(y)
 This does not change the pitch of a harmonic tone x except for a sinesoid. Frequencies of the harmonics are shifted equally by y Hz, so it won't sound like a natural harmonic tone.

Examples

AUX> x=tone(500,50).sqrt@6
AUX> y=x>330

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