Music recording sales certification

Music recording sales certification is a system of certifying that a music recording has shipped or sold a certain number of copies. The threshold quantity varies by type (such as album, single, music video) and by nation or territory (see List of music recording certifications).

Almost all countries follow variations of the RIAA certification categories, which are named after precious materials.

The number of sales or shipments required for these awards depends upon the population of the territory in which the recording is released. Typically, they are awarded only to international releases and are awarded individually for each country in which the album is sold. Different sales levels, some perhaps 10 times lower than others, may exist for different music media (for example: videos versus albums, singles, or downloads).

History

The original gold record awards were presented to artists by their own record companies to publicize their sales achievements. The first of these was awarded by RCA Victor to Glenn Miller in February 1942, celebrating the sale of 1.2 million copies of "Chattanooga Choo Choo". Another example of a company award is the gold record awarded to Elvis Presley in 1956 for one million units sold of his single "Don't Be Cruel". The first gold record for an LP was awarded by RCA Victor to Harry Belafonte in 1957 for the album Calypso (1956), the first album to sell over 1,000,000 copies in RCA's reckoning.

Sound recording and reproduction

Sound recording and reproduction is an electrical or mechanical inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording technology are analog recording and digital recording. Acoustic analog recording is achieved by a small microphone diaphragm that can detect changes in atmospheric pressure (acoustic sound waves) and record them as a graphic representation of the sound waves on a medium such as a phonograph (in which a stylus senses grooves on a record). In magnetic tape recording, the sound waves vibrate the microphone diaphragm and are converted into a varying electric current, which is then converted to a varying magnetic field by an electromagnet, which makes a representation of the sound as magnetized areas on a plastic tape with a magnetic coating on it. Analog sound reproduction is the reverse process, with a bigger loudspeaker diaphragm causing changes to atmospheric pressure to form acoustic sound waves. Electronically generated sound waves may also be recorded directly from devices such as an electric guitar pickup or a synthesizer, without the use of acoustics in the recording process other than the need for musicians to hear how well they are playing during recording sessions.