4 General

26.4443GPPCodec for Enhanced Voice Services (EVS)Release 17Test sequencesTS

4.1 Introduction

This specification provides digital test sequences which are necessary to test conformance for an implementation of the EVS codec (TS 26.445 [2]), Voice Activity Detection (TS 26.451 [3]), Comfort Noise Generation (TS 26.449 [4]), Discontinuous Transmission (TS 26.450 [5]), Concealment of Lost Packets (3GPP TS 26.447 [6]), Jitter Buffer Management (JBM) (3GPP TS 26.448 [11]) and AMR-WB Interoperable Function (3GPP TS 26.446 [10]), and for the testing of conformance for implementations of the ANSI C code in TS 26.442 [7], TS 26.443 [8] and TS 26.452 [12].

A standard compliant implementation of the above specifications shall pass conformance tests according to clause 7. The necessary test sequences can be found in the corresponding ZIP files according to the attached Readme.txt file.

Clause 5 describes the format of the files, which contain the digital test sequences. Clause 6 describes the test sequences for the EVS codec, including error concealment of lost packets, the AMR-WB interoperable function. the VAD, comfort noise generation, discontinuous transmission, the AMR-WB interoperable function, the EVS jitter buffer management, Clause 7 describes the conformance testing for implementations of the EVS codec.