AudioAmplify

AudioAmplify[audio,s]

multiplies all samples of audio by a factor s.

AudioAmplify[video,s]

amplifies the first audio track in video.

Details

  • AudioAmplify can be used to amplify or attenuate audio signals.
  • AudioAmplify multiplies each sample value with the factor s.
  • In AudioAmplify[audio,s], with s>1 the audio is amplified; with s<1 the audio is attenuated.
  • The multiplier s can be any non-negative real number or can be given in decibels.
  • A scalar value s is equivalent to in decibels.
  • Use AudioNormalize to uniformly amplify or attenuate all elements.

Examples

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Basic Examples  (2)

Amplify an audio signal:

Amplify an audio signal:

Scope  (2)

The amplification parameter can be specified in decibels:

Negative decibel values attenuate a signal:

Process the audio track of a video:

Properties & Relations  (3)

AudioAmplify is equivalent to multiplying the signal by the amplification factor:

Use AudioAmplify to normalize a signal:

This would be equivalent to calling AudioNormalize:

Compare the power spectra of a signal and its amplified versions:

Wolfram Research (2016), AudioAmplify, Wolfram Language function, https://reference.wolfram.com/language/ref/AudioAmplify.html (updated 2024).

Text

Wolfram Research (2016), AudioAmplify, Wolfram Language function, https://reference.wolfram.com/language/ref/AudioAmplify.html (updated 2024).

CMS

Wolfram Language. 2016. "AudioAmplify." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2024. https://reference.wolfram.com/language/ref/AudioAmplify.html.

APA

Wolfram Language. (2016). AudioAmplify. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/AudioAmplify.html

BibTeX

@misc{reference.wolfram_2025_audioamplify, author="Wolfram Research", title="{AudioAmplify}", year="2024", howpublished="\url{https://reference.wolfram.com/language/ref/AudioAmplify.html}", note=[Accessed: 22-February-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_audioamplify, organization={Wolfram Research}, title={AudioAmplify}, year={2024}, url={https://reference.wolfram.com/language/ref/AudioAmplify.html}, note=[Accessed: 22-February-2025 ]}