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004 – Audio Recording
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- History
- Before 1925 all audio recording was strictly mechanical
- 1860 recording with charcoal and paper – https://en.wikipedia.org/wiki/File:1860-Scott-Au-Clair-de-la-Lune-05-09.ogg
- 1885 – Disc Phonograph incl recording of Alexander Graham Bell’s voice – https://en.wikipedia.org/wiki/Volta_Laboratory_and_Bureau#Bell.27s_voice
- Became the Vinyl that we know
- Til 1945 – Electric but still recorded onto wax discs as master
- Magnetic recording onto tape and became the standard after 1950
- 1975 – first recordings onto DAT, CD etc
- MP3 in 1993
- Before 1925 all audio recording was strictly mechanical
- Microphones
- Ribbon Microphones
- Ribbon of metal suspended between magnets. As voice moved the ribbon, generated an electrical charge
- Dynamic
- Diaphragm moves from air movement (voice etc) which moves a magnet inside a coil which generates the electrical charge
- Condenser
- Capacitance. Diaphragm moves backwards and forward towards another plate which changes the capacitance. These microphones require power. Often phantom power
- +48V along the same cable as the audio. Applies voltage to both signal lines equally. Audio signal is the difference between the two signal lines so does not affect the sound
- Capacitance. Diaphragm moves backwards and forward towards another plate which changes the capacitance. These microphones require power. Often phantom power
- Ribbon Microphones
- Recording
- DAWs
- CAST/ZenCaster
- Mastering
- EQ, Compression, Gate etc
- Loudness
- Auphonic
- Delivery
- As above
- iPods
- Radio
- Streaming
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