1、 ETSI TS 126 174 V15.0.0 (2018-07) 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 15.0.0 Release
2、 15) TECHNICAL SPECIFICATION ETSI ETSI TS 126 174 V15.0.0 (2018-07)13GPP TS 26.174 version 15.0.0 Release 15Reference RTS/TSGS-0426174vf00 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 348 623 562 0001
3、7 - 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 any ele
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9、 are trademarks registered and owned by the GSM Association. ETSI ETSI TS 126 174 V15.0.0 (2018-07)23GPP TS 26.174 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
10、 pertaining to these essential 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 S
11、ecretariat. Latest updates 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 updat
12、es on the ETSI Web server) which are, or may be, or may become, essential to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as be
13、ing the property of ETSI, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specifica
14、tion (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 identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
15、 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“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted a
16、s 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 citation. ETSI ETSI TS 126 174 V15.0.0 (2018-07)33GPP TS 26.174 version 15.0.0 Release 15Contents Intellectual P
17、roperty Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 Normative references . 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 5g34 General . 6g35 Test sequence format 6g35.1 File format 6g35.2 Codec homing 6g36 Speech codec test sequences
18、 6g36.1 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 sequences for source controlled rate operation . 8g37.1 Codec configuration . 8g37.2 Test Sequences . 9g37.2.1 Tes
19、t 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 9g38 Sequences for finding the 20 ms framing of the adaptive multi-rate speech encoder 9g38.1 Bit synchronisati
20、on . 10g38.2 Frame synchronisation . 10g38.3 Formats and sizes of the synchronisation sequences 10g3Annex A (informative): Change history . 12g3History 13g3ETSI ETSI TS 126 174 V15.0.0 (2018-07)43GPP TS 26.174 version 15.0.0 Release 15Foreword This Technical Specification has been produced by the 3G
21、PP. 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 3GPP system. The contents of the present document are subject to continuing work within the TSG and may chan
22、ge 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 as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG f
23、or 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 the third digit is incremented when editorial only changes have been incorporated in the specification; ETSI
24、ETSI TS 126 174 V15.0.0 (2018-07)53GPP TS 26.174 version 15.0.0 Release 151 Scope The present document specifies the digital test sequences for the adaptive multi-rate wideband (AMR-WB) speech codec. These sequences test for a bit-exact implementation of the adaptive multi-rate wideband (AMR-WB) spe
25、ech 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 incorporates by dated and undated reference, provisions from other publications. These normative references are cited
26、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 when incorporated in it by amendment or revision. For undated references, the latest edition of the publicatio
27、n 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 Codec; Transcoding functions“. 4 3GPP TS 26.193: “AMR Wideband Speech Codec; Source Controlled Rate operatio
28、n“. 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; ANSI-C code“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, th
29、e 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 abbreviations apply: ETSI ETSI TS 126 174 V15.0.0 (2018-07)63GPP TS 26.174 version 15.0.0 Release 154 General Digital t
30、est 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 noise generation (TS 26.192 3), and source controlled rate operation (TS 26.193 4). The test sequences may
31、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 sequences for the speech transcoder. Clause 7 describes the test sequences for the VAD, comfort noise and source co
32、ntrolled 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 provides information on the format of the digital test sequences for the adaptive multi-rate wideband (AMR-WB) sp
33、eech 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 sequence files in PC (little-endian) byte order are provided in archive files (ZIP format) which accompany the p
34、resent 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 speech decoder: *.COD - Files for comparison with the decoder output: *.OUT - One mode control file for the m
35、ode 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 function of these frames is to reset the speech encoder state variables to their initial value. In the case o
36、f 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 hardware implementation undergoing testing, the first speech encoder output frame is undefined and need not be i
37、dentical 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 frames in the *.COD files is to reset the speech decoder state variables to their initial value. In the case
38、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 hardware implementation undergoing testing, the first speech decoder output frame is undefined and need not be
39、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. 6 Speech codec test sequences This clause describes the test sequences designed to exercise the adaptive multi-rate wideband (AMR-WB) speech tr
40、anscoder (TS 26.190 3). ETSI ETSI TS 126 174 V15.0.0 (2018-07)73GPP TS 26.174 version 15.0.0 Release 156.1 Codec configuration The speech encoder shall be configured not to operate in the source controlled rate mode. 6.2 Speech codec test sequences 6.2.1 Speech encoder test sequences Twenty-three en
41、coder 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.INP - Synthetic harmonic signal. The pitch delay varies slowly from 34 to 231 samples. The minimum and maxi
42、mum 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 - Square sweep varying from 50 Hz to 7000 Hz. Amplitudes 32767. - T03.INP - Sinusoidal sweep varying from 5
43、0 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 dBov, P.341 filtered. - T06.INP Female and male speech, ambient noise, active speech level: -36.1 dBov, P.34
44、1 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 dBov, P.341 filtered. - T09.INP - Female and male speech, Hoth noise, active speech level: -37.4 dBov, P.341 fi
45、ltered. - 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 filtered. - T12.INP - Female and male speech, ambient noise, active speech level: -46.0 dBov, P.341 filtered
46、. - 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 male speech, rain noise, active speech level: -37.2 dBov, P.341 filtered. - T16.INP - Female and male speech,
47、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 test. - T18.INP - Male speech, active speech level: -29.7 dBov, P.341 filtered, with many zero frames. - T19.I
48、NP - 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.INP - Zero signal sequence. - T22.INP - Speech sequence for mode switching test. The output using these inpu
49、t sequences will be different depending on the tested adaptive multi-rate mode. In the notation used below should be changed to the number of the tested mode, i.e. one of 2385, 2305, 1985, 1825, 1585, 1425, 1265, 885 or 660. ETSI ETSI TS 126 174 V15.0.0 (2018-07)83GPP TS 26.174 version 15.0.0 Release 15The 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 parameters shall be identi
