Method for interoperation between adaptive multi-rate wideband (AMR-WB) and multi-mode variable bit-rate wideband (VMR-WB) codecs

Method for interoperation between adaptive multi-rate wideband (AMR-WB) and multi-mode variable bit-rate wideband (VMR-WB) codecs

  • CN 1,703,737 A
  • Filed: 10/10/2003
  • Published: 11/30/2005
  • Est. Priority Date: 10/11/2002
  • Status: Active Application
First Claim
Patent Images

1. , variable bit rate multi-mode wideband (VMR-WB) codec of provenance control, this codec have a kind of can and the operator scheme of AMR-WB (AMR-WB) codec interoperability, this codec comprises:

  • The full rate of at least one interoperability (I-FR) type of coding;

    Described at least one I-FR type of coding has the first Bit Allocation in Discrete structure based on the AMR-WB type of coding;

    WithAt least one comfort noise generator (CNG) type of coding is used for to non-voice activated frame coding, and this at least one comfort noise generator type of coding has the second Bit Allocation in Discrete structure based on the AMR-WBSID_UPDATE type of coding.

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