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- Half_Rate abstract "Half Rate (HR or GSM-HR or GSM 06.20) is a speech coding system for GSM, developed in the early 1990s.Since the codec, operating at 6.5 kbit/s, requires half the bandwidth of the Full Rate codec, network capacity for voice traffic is doubled, at the expense of audio quality. It is recommended to use this codec when the battery is low as it may consume up to 30% less energy[citation needed]. The sampling rate is 8 kHz with resolution 13 bit, frame length 160 samples (20 ms) and subframe length 40 samples (5 ms).GSM Half Rate is specified in ETSI EN 300 969 (GSM 06.20), and uses a form of the VSELP algorithm. Previous specification was in ETSI ETS 300 581-2, which first edition was published in December 1995.For some Nokia phones you can configure the use of this codec: To activate HR codec use enter the following code: *4720# To deactivate HR codec use enter the following code: #4720#↑ ↑".
- Half_Rate wikiPageExternalLink Report_WorkItem.asp?WKI_ID=10142.
- Half_Rate wikiPageExternalLink Report_WorkItem.asp?WKI_ID=6242.
- Half_Rate wikiPageExternalLink 0620.htm.
- Half_Rate wikiPageID "1079492".
- Half_Rate wikiPageRevisionID "547453058".
- Half_Rate hasPhotoCollection Half_Rate.
- Half_Rate subject Category:Audio_codecs.
- Half_Rate subject Category:Speech_codecs.
- Half_Rate comment "Half Rate (HR or GSM-HR or GSM 06.20) is a speech coding system for GSM, developed in the early 1990s.Since the codec, operating at 6.5 kbit/s, requires half the bandwidth of the Full Rate codec, network capacity for voice traffic is doubled, at the expense of audio quality. It is recommended to use this codec when the battery is low as it may consume up to 30% less energy[citation needed].".
- Half_Rate label "GSM-HR".
- Half_Rate label "GSM-HR".
- Half_Rate label "Half Rate".
- Half_Rate sameAs GSM-HR.
- Half_Rate sameAs m.0445zf.
- Half_Rate sameAs Q2477934.
- Half_Rate sameAs Q2477934.
- Half_Rate wasDerivedFrom Half_Rate?oldid=547453058.
- Half_Rate isPrimaryTopicOf Half_Rate.