3 Definitions and Abbreviations

26.2013GPPAdaptive Multi-Rate - Wideband (AMR-WB) speech codecFrame structureRelease 17Speech codec speech processing functionsTS

3.1 Definitions

For the purposes of the present document, the following terms and definitions apply:

AMR-WB mode: one of the nine AMR-WB codec bit-rates denoted also with indices 0 to 8 where 0 maps to the 6.60 kbit/s mode and 8 maps to the 23.85 kbit/s mode.

AMR-WB codec mode: same as AMR-WB mode.

RX_TYPE: classification of the received frame as defined in [2].

TX_TYPE: classification of the transmitted frame as defined in [2].

3.2 Abbreviations

For the purposes of the present document, the following abbreviations apply:

CRC Cyclic Redundancy Check

FQI Frame Quality Indicator

GSM Global System for Mobile communication

LSB Least Significant Bit

MSB Most Significant BitRX Receive

SCR Source Controlled Rate operation

SID Silence Descriptor (Comfort Noise Frame)

TX Transmit