NICAM
Sign in to saveAlso known as Near Instantaneous Companded Audio Multiplex
Near Instantaneous Companded Audio Multiplex (NICAM) is an early form of lossy compression for digital audio. It was originally developed in the early 1970s for point-to-point links within broadcasting networks. In the 1980s, broadcasters began to use NICAM compression for transmissions of stereo TV sound to the public.
Wikidata facts
- Instance of
- broadcast television system
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- Commons category
- NICAM
- data transfer speed
- 704
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Encyclopedic overview
22 sectionsContents
- History
- Near-instantaneous companding
- Point-to-point links
- Broadcasts to the public
- Nations and regions using NICAM public broadcasts
- Implementations
- Operation
- NICAM packet transmission
- NICAM transmission problems
- NICAM carrier power
- Differing features
- Two's complement signing
- ±0 V has three binary representations
- Parity checking limited to only 6 of 10 bits
- Recording
- VCR
- DVD
- Flash memory and computer multimedia
- See also
- References
- Further reading
- External links
Near Instantaneous Companded Audio Multiplex (NICAM) is an early form of lossy compression for digital audio. It was originally developed in the early 1970s for point-to-point links within broadcasting networks. In the 1980s, broadcasters began to use NICAM compression for transmissions of stereo TV sound to the public.
== History == === Near-instantaneous companding === The idea was first described in 1964. In this, the 'ranging' was to be applied to the analogue signal before the analogue-to-digital converter (ADC) and after the digital-to-analogue converter (DAC). The application of this to broadcasting, in which the companding was to be done entirely digitally after the ADC and before the DAC, was described in a 1972 BBC Research Report.
Excerpted from Wikipedia’s “NICAM” article, available under the CC BY-SA 4.0 licence.