The present document specifies the digital test sequences for the adaptive multi-rate (AMR) speech codec. These sequences test for a bit exact implementation of the adaptive multi-rate speech transcoder (TS 26.090), voice activity detection (TS 26.094), comfort noise (TS 26.092), and source controlled rate operation (TS 26.093).

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Digital test sequences are necessary to test for a bit exact implementation of the adaptive multi-rate speech transcoder (TS 26.090), voice activity detection (TS 26.094), comfort noise generation (TS 26.092), and source controlled rate operation (TS 26.093). The test sequences may also be used to verify installations of the ANSI C code in TS 26.073. Clause 5 describes the format of the files which contain the digital test sequences. Clause 6 describes the test sequences for the speech transcoder. Clause 7 describes the test sequences for the VAD, comfort noise and source controlled rate operation. Clause 8 describes the method by which synchronisation is obtained between the test sequences and the speech codec under test.