AudioData
Details and Options
- AudioData returns a 2D array of data, where rows correspond to channels.
- The number of samples in each channel is equivalent to the duration of the audio multiplied by the sample rate.
- By default, AudioData [audio] returns values normalized to lie between and for audio objects of type "SignedInteger8", "SignedInteger16" or "SignedInteger32". For audio objects of a real type, AudioData [audio] returns whatever real values are used.
- Possible types specified by AudioData [audio,"type"] are:
-
"SignedInteger8" signed 8-bit integers from through"SignedInteger16" signed 16-bit integers from through"SignedInteger32" signed 32-bit integers from through"Real32" single-precision real (32 bit)"Real64" double-precision real (64 bit)
- AudioData [audio,Automatic ] is equivalent to AudioData [audio,AudioType [audio]].
- For multichannel audio objects, AudioData returns the data in the form {{v11,v12,…},{v21,v22,…},…}, with values vij corresponding to channel i.
- Use the option Interleaving->True to get interleaved data.
Examples
open all close allBasic Examples (1)
Extract data from an Audio object:
Scope (1)
Audio data of a stereo sound:
Plot one second of the sum of the channels:
Generalizations & Extensions (1)
Options (1)
Interleaving (1)
By default, non-interleaved data is returned:
Extract interleaved data:
Applications (2)
Import a stereo audio sample:
Use AudioData to separate stereo into two mono audio samples:
Generate a histogram of audio sample values:
Related Guides
Text
Wolfram Research (2016), AudioData, Wolfram Language function, https://reference.wolfram.com/language/ref/AudioData.html (updated 2017).
CMS
Wolfram Language. 2016. "AudioData." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2017. https://reference.wolfram.com/language/ref/AudioData.html.
APA
Wolfram Language. (2016). AudioData. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/AudioData.html
BibTeX
@misc{reference.wolfram_2025_audiodata, author="Wolfram Research", title="{AudioData}", year="2017", howpublished="\url{https://reference.wolfram.com/language/ref/AudioData.html}", note=[Accessed: 11-January-2026]}
BibLaTeX
@online{reference.wolfram_2025_audiodata, organization={Wolfram Research}, title={AudioData}, year={2017}, url={https://reference.wolfram.com/language/ref/AudioData.html}, note=[Accessed: 11-January-2026]}