1、 ETSI TS 126 174 V14.0.0 (2017-04) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Speech codec speech processing functions; Adaptive Multi-Rate - Wideband (AMR-WB) speech codec test sequences (3GPP TS 26.174 version 14.0.0 Release
2、 14) floppy3TECHNICAL SPECIFICATION ETSI ETSI TS 126 174 V14.0.0 (2017-04)13GPP TS 26.174 version 14.0.0 Release 14Reference RTS/TSGS-0426174ve00 Keywords GSM,LTE,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 5
3、62 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of
4、any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Fo
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7、including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standa
8、rds Institute 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are
9、Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 126 174 V14.0.0 (2017-04)23GPP TS 26.174 version 14.0.0 Release 14Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these ess
10、ential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updat
11、es are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web serve
12、r) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identitie
13、s or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not
14、“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct cita
15、tion. ETSI ETSI TS 126 174 V14.0.0 (2017-04)33GPP TS 26.174 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 Normative references . 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 5g34
16、 General . 6g35 Test sequence format 6g35.1 File format 6g35.2 Codec homing 6g36 Speech codec test sequences 7g36.1 Codec configuration . 7g36.2 Speech codec test sequences 7g36.2.1 Speech encoder test sequences 7g36.2.2 Speech decoder test sequences 8g36.2.3 Codec homing sequence . 8g37 Test sequen
17、ces for source controlled rate operation . 8g37.1 Codec configuration . 9g37.2 Test Sequences . 9g37.2.1 Test sequences for background noise estimation 9g37.2.2 Test sequences for tone signal detection . 9g37.2.3 Real speech and tones . 9g37.2.4 Test sequence for signal-to-noise ratio estimation 9g3
18、8 Sequences for finding the 20 ms framing of the adaptive multi-rate speech encoder 9g38.1 Bit synchronisation . 10g38.2 Frame synchronisation . 10g38.3 Formats and sizes of the synchronisation sequences 11g3Annex A (informative): Change history . 12g3History 13g3ETSI ETSI TS 126 174 V14.0.0 (2017-0
19、4)43GPP TS 26.174 version 14.0.0 Release 14Foreword This Technical Specification has been produced by the 3GPP. The present document is an introduction to the speech processing parts of the wideband telephony speech service employing the Adaptive Multi-Rate Wideband (AMR-WB) speech coder within the
20、3GPP system. The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of this TS, it will be re-released by the TSG with an identifying change of release date and an increase in version number
21、as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 Indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z t
22、he third digit is incremented when editorial only changes have been incorporated in the specification; ETSI ETSI TS 126 174 V14.0.0 (2017-04)53GPP TS 26.174 version 14.0.0 Release 141 Scope The present document specifies the digital test sequences for the adaptive multi-rate wideband (AMR-WB) speech
23、 codec. These sequences test for a bit-exact implementation of the adaptive multi-rate wideband (AMR-WB) speech transcoder (TS 26.190 2), voice activity detection (TS 26.194 5), comfort noise (TS 26.192 3), and source controlled rate operation (TS 26.193 4). 2 Normative references This TS incorporat
24、es by dated and undated reference, provisions from other publications. These normative references are cited at thappropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this TS only wh
25、en incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. 1 3GPP TS 26.201: “AMR wideband speech codec; Frame structure“. 2 3GPP TS 26.202: “AMR Wideband Speech Codec; Interface to RAN“. 3 3GPP TS 26.190 : “AMR Wideband Speech
26、Codec; Transcoding functions“. 4 3GPP TS 26.193: “AMR Wideband Speech Codec; Source Controlled Rate operation“. 5 3GPP TS 26.194: “AMR wideband speech codec; Voice Activity Detection (VAD)“. 6 3GPP TS 26.201: “AMR Wideband Speech Codec; Frame structure“. 7 3GPP TS 26.173 : “AMR Wideband Speech Codec
27、; ANSI-C code“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TS 26.190 2, TS 26.091 6, TS 26.192 3, TS 26.193 4 and TS 26.194 5 apply. 3.2 Abbreviations For the purposes of the present document, the following abbreviatio
28、ns apply: ETSI ETSI TS 126 174 V14.0.0 (2017-04)63GPP TS 26.174 version 14.0.0 Release 144 General Digital test sequences are necessary to test for a bit exact implementation of the adaptive multi-rate wideband (AMR-WB) speech transcoder (TS 26.190 2), voice activity detection (TS 26.194 5), comfort
29、 noise generation (TS 26.192 3), and source controlled rate operation (TS 26.193 4). The test sequences may also be used to verify installations of the ANSI C code in TS 26.173 7. Clause 5 describes the format of the files which contain the digital test sequences. Clause 6 describes the test sequenc
30、es 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. 5 Test sequence format This clause provi
31、des information on the format of the digital test sequences for the adaptive multi-rate wideband (AMR-WB) speech transcoder (TS 26.190 3), voice activity detection (TS 26.194 5), comfort noise generation (TS 26.192 3), and source controlled rate operation (TS 26.193 4). 5.1 File format The test sequ
32、ence files in PC (little-endian) byte order are provided in archive files (ZIP format) which accompany the present document. Following decompression, three types of file are provided: - Files for input to the speech encoder: *.INP - Files for comparison with the encoder output and for input to the s
33、peech decoder: *.COD - Files for comparison with the decoder output: *.OUT - One mode control file for the mode switching test T22.MOD All file formats are described in TS 26.173 7. 5.2 Codec homing Each *.INP file includes two homing frames (see TS 26.173 7) at the start of the test sequence. The f
34、unction of these frames is to reset the speech encoder state variables to their initial value. In the case of a correct installation of the ANSI-C simulation (TS 26.173 7), all speech encoder output frames shall be identical to the corresponding frame in the *.COD file. In the case of a correct hard
35、ware implementation undergoing testing, the first speech encoder output frame is undefined and need not be identical to the first frame in the *.COD file, but all remaining speech encoder output frames shall be identical to the corresponding frames in the *.COD file. The function of the two homing f
36、rames in the *.COD files is to reset the speech decoder state variables to their initial value. In the case of a correct installation of the ANSI-C simulation (TS 26.173 7), all speech decoder output frames shall be identical to the corresponding frame in the *.OUT file. In the case of a correct har
37、dware implementation undergoing testing, the first speech decoder output frame is undefined and need not be identical to first frame in the *.OUT file, but all remaining speech decoder output frames shall be identical to the corresponding frames in the *.OUT file. ETSI ETSI TS 126 174 V14.0.0 (2017-
38、04)73GPP TS 26.174 version 14.0.0 Release 146 Speech codec test sequences This clause describes the test sequences designed to exercise the adaptive multi-rate wideband (AMR-WB) speech transcoder (TS 26.190 3). 6.1 Codec configuration The speech encoder shall be configured not to operate in the sour
39、ce controlled rate mode. 6.2 Speech codec test sequences 6.2.1 Speech encoder test sequences Twenty-three encoder input sequences are provided. Note that for the input sequences T00.INP to T03.INP, the amplitude figures are given in 14-bit precision. The active speech levels are given in dBov. - T00
40、.INP - Synthetic harmonic signal. The pitch delay varies slowly from 34 to 231 samples. The minimum and maximum amplitudes are -1475 and +5952. - T01.INP - Synthetic harmonic signal. The pitch delay varies slowly from 231 down to 34 samples. Amplitudes at saturation point -5386 and +21707. - T02.INP
41、 - Square sweep varying from 50 Hz to 7000 Hz. Amplitudes 32767. - T03.INP - Sinusoidal sweep varying from 50 Hz to 7000 Hz. Amplitudes 6217. - T04.INP - Female speech, ambient noise, active speech level: -22.5 dBov, P.341 filtered. - T05.INP - Male speech, ambient noise, active speech level: -29.9
42、dBov, P.341 filtered. - T06.INP Female and male speech, ambient noise, active speech level: -36.1 dBov, P.341 filtered. - T07.INP - Female and male speech, ambient noise, active speech level: -45.8 dBov, P.341 filtered. - T08.INP - Female and male speech, ambient noise, active speech level: -7.7 dBo
43、v, P.341 filtered. - T09.INP - Female and male speech, Hoth noise, active speech level: -37.4 dBov, P.341 filtered. - T10.INP - Female and male speech, Hoth noise, active speech level: -27.3 dBov, P.341 filtered. - T11.INP - Female and male speech, Hoth noise, active speech level: -16.9 dBov, P.341
44、filtered. - T12.INP - Female and male speech, ambient noise, active speech level: -46.0 dBov, P.341 filtered. - T13.INP - Speech, very high and low car noise, P.341 filtered. - T14.INP - Female and male speech, ambient noise, active speech level: -26.0 dBov, P.341 filtered. - T15.INP - Female and ma
45、le speech, rain noise, active speech level: -37.2 dBov, P.341 filtered. - T16.INP - Female and male speech, rain noise, active speech level: -26.5 dBov, P.341 filtered. - T17.INP - Female and male speech, rain noise, active speech level: -16.4 dBov, P.341 filtered. This file includes homing frame te
46、st. - T18.INP - Male speech, active speech level: -29.7 dBov, P.341 filtered, with many zero frames. - T19.INP - Child speech, ambient noise, active speech level: -34.7 dBov, P.341 filtered. - T20.INP - Sequence for exercising the LPC vector quantisation codebooks and ROM tables of the codec. - T21.
47、INP - Zero signal sequence. ETSI ETSI TS 126 174 V14.0.0 (2017-04)83GPP TS 26.174 version 14.0.0 Release 14- T22.INP - Speech sequence for mode switching test. The output using these input sequences will be different depending on the tested adaptive multi-rate mode. In the notation used below should
48、 be changed to the number of the tested mode, i.e. one of 2385, 2305, 1985, 1825, 1585, 1425, 1265, 885 or 660. The T00.INP and T01.INP sequences were designed to test the pitch lag of the adaptive multi-rate wideband speech encoder. In a correct implementation, the resulting speech encoder output p
49、arameters shall be identical to those specified in the T00_.COD and T01_.COD sequences, respectively. The T02.INP and T03.INP sequences are particularly suited for testing the LPC analysis, as well as for finding saturation problems. In a correct implementation, the resulting speech encoder output parameters shall be identical to those specified in the T02_.COD and T03_.COD sequences, respectively. The T04.INP and T05.INP sequences contain a lot of low-frequency components. In a correct implement
