AudioTrim

AudioTrim[audio]

trims silence from the beginning and end of audio.

AudioTrim[audio,t]

returns the first t seconds of audio.

AudioTrim[audio,-t]

returns the last t seconds of audio.

AudioTrim[audio,{t1,t2}]

returns audio starting at time t1 and ending at time t2 of audio.

AudioTrim[audio,{{t11,t12},…}]

returns a list of audio for all given intervals {ti1,ti2}.

Details and Options

  • AudioTrim can be used to either extract interesting parts of a recording or remove uninteresting parts, e.g. silence.
  • Intervals with amplitudes below are assumed to be silent.
  • The time t can be any of the following:
  • ttime given in seconds
    Quantity[t,"unit"]time given in "unit" compatible with seconds
    Quantity[t,"Samples"]time given as number of samples
  • AudioTrim takes a Padding option. See the reference page for AudioPad for possible settings.
  • In AudioTrim[audio,t], when t is longer than the duration of audio, by default no extra padding is introduced.

Examples

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Basic Examples  (1)

Import sound as an audio object:

Trim the silence at the beginning and end:

Take the first 2 seconds:

Take the last 2 seconds:

Take from time 1.5 to 2.5:

Scope  (3)

Specify the amount of trimming using a time Quantity:

Specify the amount of trimming using a number of samples:

Extract multiple intervals:

Applications  (1)

Extract intervals that satisfy a condition:

Use AudioIntervals to look for segments with high RMS amplitude:

Extract the intervals:

Properties & Relations  (1)

Partition an Audio object:

Define the times for partitioning:

Partition the audio object:

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

Text

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

CMS

Wolfram Language. 2016. "AudioTrim." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/AudioTrim.html.

APA

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

BibTeX

@misc{reference.wolfram_2024_audiotrim, author="Wolfram Research", title="{AudioTrim}", year="2016", howpublished="\url{https://reference.wolfram.com/language/ref/AudioTrim.html}", note=[Accessed: 25-April-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_audiotrim, organization={Wolfram Research}, title={AudioTrim}, year={2016}, url={https://reference.wolfram.com/language/ref/AudioTrim.html}, note=[Accessed: 25-April-2024 ]}