Half Rate

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Half Rate or HR or GSM-HR is a speech encoding system for GSM developed in the early 1990s. Since the codec, operating at 5.6 kbit/s, requires half the bandwidth of the Full Rate codec, network capacity for voice traffic is doubled, at the expense of audio quality.Is recommended to use this codec when having low battery.It saves 30% more energy.

GSM Half Rate is specified in ETSI 06.20, and uses a form of the VSELP algorithm.

[edit] See also

• Full Rate
• Enhanced Full Rate
• Adaptive Multi-Rate

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Categories: Technology stubs | Audio codecs | Speech codecs

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• This page was last modified 21:38, 17 March 2007 by Anonymous user(s) of Wikipedia. Based on work by Wikipedia user(s) Mcoder, Alynna Kasmira, Bobblewik and Cyrius.
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