Hertz - Revision history

Donxello at 04:42, 15 May 2025

2025-05-15T04:42:42Z

← Older revision		Revision as of 04:42, 15 May 2025
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	* International Bureau of Weights and Measures (BIPM). “SI Brochure, 9th edition.” [https://www.bipm.org/]		* International Bureau of Weights and Measures (BIPM). “SI Brochure, 9th edition.” [https://www.bipm.org/]
	* National Institute of Standards and Technology (NIST). “SI Base Units.” [https://www.nist.gov/]		* National Institute of Standards and Technology (NIST). “SI Base Units.” [https://www.nist.gov/]

			[[Category:Audio Basics]]

Donxello at 21:12, 14 May 2025

2025-05-14T21:12:26Z

← Older revision		Revision as of 21:12, 14 May 2025
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	[[Related concept::Frequency]]		[[Related concept::Frequency]]
	[[Related concept::Pitch]]		[[Related concept::Pitch]]
			[[Related concept::Heinrich Hertz]]

	{{#set:		{{#set:
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	}}		}}

	'''Hertz''' (symbol: '''Hz''') is the unit of ~~measurement for~~ frequency in the International System of Units (SI). It ~~indicates how many cycles (oscillations) occur in~~ one second.		'''Hertz''' (symbol: '''Hz''') is the unit of frequency in the International System of Units (SI). It represents one cycle per second.

	== ~~Examples~~ ==		== Use in Music ==
	* A₄ = 440 Hz ~~→ the sound wave~~ vibrates 440 times per second		* Tuning note A₄ = 440 Hz (vibrates 440 times per second)
	* ~~The human hearing range spans roughly~~ 20 Hz to 20,000 Hz		* Describes the frequency content of sound
			* Used in equalization, tuning systems, synthesis, and signal processing

			== Human Hearing Range ==
			Humans can typically hear between:
			* 20 Hz (low bass) and
			* 20,000 Hz (20 kHz) (high treble)

			== Historical Background ==
			The unit is named after Heinrich Rudolf Hertz (1857–1894), a German physicist who first conclusively proved the existence of electromagnetic waves predicted by James Clerk Maxwell.

			In 1930, the "hertz" replaced the earlier term "cycles per second" (cps) as part of a movement to standardize scientific units. It was officially adopted as an SI unit in 1960 by the 11th General Conference on Weights and Measures (CGPM).

	== ~~Use in Music~~ ==		== Heinrich Hertz ==
	* ~~Tuning standards (e.g.~~, ~~A₄ = 440 Hz)~~		* Born: 22 February 1857, Hamburg, Germany
	* ~~Frequency analysis (e.g.~~, ~~equalizers~~, ~~spectrograms~~)		* Died: 1 January 1894, Bonn, Germany (aged 36)
	* ~~Synthesizers~~ and ~~digital audio tools~~		* Contributions: Proved the wave nature of light and radio; confirmed Maxwell's theories
			* Legacy: The hertz (Hz), the SI unit of frequency, is named in his honor

	== See also ==		== See also ==
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	* [[Pitch]]		* [[Pitch]]
	* [[Sound Wave]]		* [[Sound Wave]]

			== Sources ==
			* Wikipedia contributors. “Hertz (unit).” [https://en.wikipedia.org/wiki/Hertz Wikipedia – Hertz], last updated 2024-03
			* Wikipedia contributors. “Heinrich Hertz.” [https://en.wikipedia.org/wiki/Heinrich_Hertz Wikipedia – Heinrich Hertz], last updated 2024-04
			* International Bureau of Weights and Measures (BIPM). “SI Brochure, 9th edition.” [https://www.bipm.org/]
			* National Institute of Standards and Technology (NIST). “SI Base Units.” [https://www.nist.gov/]

Donxello: Created page with "= Hertz = Category:Units of Measurement Has topic type::Scientific Unit Instance of::Frequency Unit Related concept::Frequency Related concept::Pitch {{#set: |Definition=Hertz (Hz) is the SI unit of frequency, representing one cycle per second. }} '''Hertz''' (symbol: '''Hz''') is the unit of measurement for frequency in the International System of Units (SI). It indicates how many cycles (oscillations) occur in one second. == Examples == * A..."

2025-05-14T21:11:53Z

Created page with "= Hertz = Category:Units of Measurement Has topic type::Scientific Unit Instance of::Frequency Unit Related concept::Frequency Related concept::Pitch {{#set: |Definition=Hertz (Hz) is the SI unit of frequency, representing one cycle per second. }} '''Hertz''' (symbol: '''Hz''') is the **unit of measurement for frequency** in the International System of Units (SI). It indicates how many cycles (oscillations) occur in one second. == Examples == * A..."

New page

= Hertz =
[[Category:Units of Measurement]]
[[Has topic type::Scientific Unit]]
[[Instance of::Frequency Unit]]
[[Related concept::Frequency]]
[[Related concept::Pitch]]

{{#set:
|Definition=Hertz (Hz) is the SI unit of frequency, representing one cycle per second.
}}

'''Hertz''' (symbol: '''Hz''') is the **unit of measurement for frequency** in the International System of Units (SI). It indicates how many cycles (oscillations) occur in one second.

== Examples ==
* A₄ = 440 Hz → the sound wave vibrates 440 times per second
* The human hearing range spans roughly **20 Hz to 20,000 Hz**

== Use in Music ==
* Tuning standards (e.g., A₄ = 440 Hz)
* Frequency analysis (e.g., equalizers, spectrograms)
* Synthesizers and digital audio tools

== See also ==
* [[Frequency]]
* [[Pitch]]
* [[Sound Wave]]