AudioFrequencyShift

AudioFrequencyShift[audio,freq]

gives audio by shifting the spectrum of audio by freq.

AudioFrequencyShift[audio,freq,mix]

uses mix to control the ratio between the original and shifted audio.

Details and Options

  • AudioFrequencyShift shifts every frequency freq in the input signal to frequency .
  • The frequency freq can be a scalar or a frequency quantity, an Audio object, a pure function, or a TimeSeries.
  • The mixing parameter mix can be any real number between 0 and 1. The default value is 1.
  • With mix=0, only the original signal is returned; with mix=1, only the delayed signal is returned.
  • AudioFrequencyShift accepts a Method option. Possible settings are:
  • "UpperSideband"the spectrum is shifted by freq
    "LowerSideband"the spectrum is reversed and shifted by freq
    "AmplitudeModulation"both effects are present at the same time
  • The absolute amount of shift should be less than half of the Nyquist frequency.

Examples

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Basic Examples  (2)

Shift the spectrum of an audio signal by 1000 Hz:

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Plot the power spectrum of the original and shifted signals:

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Mix the original signal with the shifted one:

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Scope  (5)

Options  (2)

Applications  (2)

Properties & Relations  (1)

Possible Issues  (1)

Neat Examples  (2)

See Also

AudioPitchShift  AudioTimeStretch  AudioDelay  AudioReverb  Spectrogram  Periodogram

Introduced in 2016
(11.0)