Shift the spectrum of an audio signal by 1000 Hz:

Plot the power spectrum of the original and shifted signals:

Mix the original signal with the shifted one:

Control the ratio between the original and the frequency-shifted signal:

The shift given as a number is assumed to be in hertz:

Use a frequency quantity:

Time-varying frequency shift using a function:

Time-varying frequency shift using a TimeSeries:

Time-varying frequency shift using a control audio signal:

Process the audio track of a video:

Create a chorus effect using a small amount of shift while mixing in the original signal:

Use frequency shifting to produce complex inharmonic sounds:

Use frequency shifting to "tune" drum-like sounds:

Use frequency shifting to "mask" voices:

Shifting harmonically simple signals like sinusoids changes the perceived pitch:

Shifting complex signals alters the harmonic relationships between their components and can produce an inharmonic output:

The absolute value of the shift parameter needs to be less than one-quarter of the sample rate:

Increase the sampling frequency of the input to overcome this limitation:

Simulate the behavior of an AM radio:

Shift the original signal to a higher frequency:

Reconstruct the original audio:

Time-varying frequency shift using a RandomWalkProcess: