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Expired patents [ 10] MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) [ 4] is a coding format for digital audio developed largely by the Fraunhofer Society in Germany under the lead of Karlheinz Brandenburg, [ 11][ 12] with support from other digital scientists in other countries.
The development of the MP3 audio file format, and legal issues involved in copying such files, has driven most of the innovation in music distribution since their introduction in the late 1990s. As hard disk capacities and computer CPU speeds increased at the end of the 1990s, hard disk recording became more popular.
Sound recording and reproduction is the electrical, mechanical, electronic, or digital 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 ...
Timeline of audio formats. An audio format is a medium for sound recording and reproduction. The term is applied to both the physical recording media and the recording formats of the audio content —in computer science it is often limited to the audio file format, but its wider use usually refers to the physical method used to store the data.
The Pomp and Circumstance Marches (full title Pomp and Circumstance Military Marches ), Op. 39, are a series of five (or six) marches for orchestra composed by Sir Edward Elgar. The first four were published between 1901 and 1907, when Elgar was in his forties; the fifth was published in 1930, a few years before his death; and a sixth, compiled ...
1877 : Thomas Edison and Emile Berliner simultaneously invented the first prototypes of the phonograph. 1888 : Thomas Edison introduces the electric motor-driven phonograph. 1896 : Edwin S. Votey completes the first Pianola. 1898 : Valdemar Poulsen patents the Telegraphone. 1906 : Thaddeus Cahill introduces the Telharmonium to the public.
On 8 February 2016, a court ruled that the children's song "Happy Birthday to You" was in the public domain and Warner/Chappell Music was required to pay $14 million to the song's licensees. [10] In October 2020, American humorist Tom Lehrer released his entire catalogue, dating back to the 1950s, into the public domain. [11]
The sound recording copyright symbol or phonogram symbol, ℗ (letter P in a circle), is the copyright symbol used to provide notice of copyright in a sound recording (phonogram) embodied in a phonorecord ( LPs, audiotapes, cassette tapes, compact discs, etc.). [ 1] It was first introduced in the Rome Convention for the Protection of Performers ...