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1. Source coding
Digitizing an analog audio signal in a professional production studio generates a so-called "native" digital audio format. This consists of the digital results of the physical measurement of the amplitude of the analog signal, taken from the transducer (microphone). This measurement is performed by an analog-to-digital converter circuit (figure 1 ).
The main parameters specifying this measurement process are :
the number of measurements taken per second, called the "sampling frequency", the value of a sample corresponding to the amplitude of the analog signal at a given instant;
measurement accuracy, determined by...
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Source coding
Frame formatting
Bibliography
Standards and norms
Source coding
- Information technology – Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s – Part 3: Audio http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=22412 - ISO/IEC 11172-3 - 1993
- Information technology – Generic coding of moving pictures and associated audio information – Part 3: Audio http://www.iso.org/iso/iso_catalogue/catalogue_ics/catalogue_detail_ics.htm?csnumber=22991...
Directories
• EBU (European Broadcasting Union) http://www.ebu.ch
• ETSI (European Telecommunications Standards Institute) http://www.etsi.org
• IEC (International Electrotechnical Commission) http://www.iec.ch
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