4. Conclusion
The development of digital radio has been made possible mainly by the following techniques:
audio bit-rate reduction with increasingly high-performance codecs, in particular HE-AAC v2, based on a perceptual model, reconstruction of the high-frequency part of the spectrum, and parameterization of the stereo image of an audio signal;
error-correcting detector codes and their flexibility, which, combined with interleaving-deinterleaving, enable original data to be recovered after propagation under difficult conditions;
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Conclusion
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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