AudioAmplify

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`AudioAmplify`

Updated in 14.1

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AudioAmplify[audio,s]

multiplies all samples of audio by a factor s.

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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

open allclose all

Basic Examples (2)Summary of the most common use cases

Amplify an audio signal:

In[2]:=2

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https://wolfram.com/xid/0pu1cpeunm-dyll9i

Out[2]=2

Amplify an audio signal:

In[1]:=1

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https://wolfram.com/xid/0pu1cpeunm-bg7dat

Out[1]=1

Scope (2)Survey of the scope of standard use cases

The amplification parameter can be specified in decibels:

In[4]:=4

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https://wolfram.com/xid/0pu1cpeunm-ndjl7d

Out[5]=5

Negative decibel values attenuate a signal:

In[6]:=6

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https://wolfram.com/xid/0pu1cpeunm-jygvu

Out[6]=6

Process the audio track of a video:

In[1]:=1

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https://wolfram.com/xid/0pu1cpeunm-l7x9gq

Out[1]=1

Properties & Relations (3)Properties of the function, and connections to other functions

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

In[1]:=1

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https://wolfram.com/xid/0pu1cpeunm-tf6bry

Out[2]=2

Use AudioAmplify to normalize a signal:

In[1]:=1

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https://wolfram.com/xid/0pu1cpeunm-t1thb3

Out[1]=1

This would be equivalent to calling AudioNormalize:

In[2]:=2

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https://wolfram.com/xid/0pu1cpeunm-mizr5p

Out[2]=2

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

In[1]:=1

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https://wolfram.com/xid/0pu1cpeunm-fm8wmj

Out[1]=1

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