Notas sobre a gravação técnica do som

Sound recording, namely music and voice, began at the end of the 19th century. First, they were purely mechanical recordings (there are older mechanical recordings, as in toys, but without the ability to record sounds of nature, the human voice and music in concert). The electrification of recording machines has simplified sound recording. A thriving recording industry spread across the world after its start in the United States. According to the musical taste of the time, the first records contemplated classical music, but in the 1930s, light music records appeared. Radio, with powerful stations on all continents, in addition to information, had music-based programming, stimulating the phonographic industry, and imposing musical tastes. In the mid-1940s, the magnetophon appeared, a magnetic tape recorder, of German origin, more reliable than the American steel tape recorder. After World War II, radio and record players turned bourgeois homes into real dance floors, with happy music played. Sound recording technologies have evolved so much that recording tracks have been added and sounds have been manipulated that the initial recordings did not support. Such would be the cases of the Beach Boys' Pet Sounds (1966), with the song Good Vibrations, and Sgt Pepper's Lonely Hearts Band, by the Beatles (1966-1967), whose reproduction in a live concert became impossible. The phonographic industry won over radio, until then the great producer of aesthetic tastes.