There is a unified pitch standard in the world, which facilitates the research of music theory, musical instrument making and cultural exchange. The c sound that vibrates about 261 times per second is called the central c in the musical system, which is at the top of the basic level.

There are certain standards for the height of each tone in the musical tone system. The standard height of sound varies from generation to generation. The international standard height (the first international height) is the A sound that vibrates 44 times per second, that is, the A sound in a small group is the "standard sound".

the pitch of the standard sound a in the past dynasties

High Renaissance):46Hz

Baroque: 415 Hz

The Romantic Period: 43 Hz

Helmholtz):431Hz

Philharmonic Orchestra (old : 452Hz

New Philharmonic: 439 Hz

Concert pitch/First International pitch: 44 Hz

Extended information

In p>1859, the French government enacted a law, which stipulated that? A=435? Hz? This is a compromise, after all, A=45? Hz is too high for a singer, A=422? Hz? It's not exciting enough for the audience. This standard has been popular in Europe for quite a while. In Britain in 1896, after some consultation and calculation, it was concluded that? A=439? Hz, become their standard.

Although some "standardized" pitch standards have begun to appear, it is difficult to achieve real agreement in so many countries with their own traditions, well-known opera houses, orchestras and piano manufacturers.

it's hard to imagine that the agreement that really helped the music industry reach the pitch came from the radio station. originally, thanks to science and technology, the broadcast of live concerts emerged in the 193s, which gave different countries and bands a chance to confront different pitch issues.

with the promotion of the broadcasting industry? Europe and the United States finally reached an agreement in 1939. A compromise was reached between the increasingly high pitch trend and the earlier pitch standard, and the resolution A=44? Hz? , very close to the Royal Philharmonic A=439? Hz。 At this point, the history of music finally has a "standard sound" with international significance.