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A4

A4

gives the frequency of the note A in octave 4.

Details and Options
Details and Options Details and Options
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Music`
Music`

A4

Obsolete as of version 15.

A4

gives the frequency of the note A in octave 4.

Details and Options

  • To use A4, you first need to load the Music Package using Needs["Music`"].
  • A4 is the name of a pitch in the standard equal-tempered scale.
  • The frequency is measured in Hertz.
Wolfram Research (2007), A4, Wolfram Language function, https://reference.wolfram.com/language/Music/ref/A4.html.

Text

Wolfram Research (2007), A4, Wolfram Language function, https://reference.wolfram.com/language/Music/ref/A4.html.

CMS

Wolfram Language. 2007. "A4." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/Music/ref/A4.html.

APA

Wolfram Language. (2007). A4. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/Music/ref/A4.html

BibTeX

@misc{reference.wolfram_2026_a4, author="Wolfram Research", title="{A4}", year="2007", howpublished="\url{https://reference.wolfram.com/language/Music/ref/A4.html}", note=[Accessed: 13-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_a4, organization={Wolfram Research}, title={A4}, year={2007}, url={https://reference.wolfram.com/language/Music/ref/A4.html}, note=[Accessed: 13-June-2026]}