1、 ETSI TS 126 074 V14.0.0 (2017-04) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Mandatory speech codec speech processing functions; Adaptive Multi-Rate (AMR) speech codec test sequences (3GPP TS 26.074 version 14.0.0 Release 14)
2、 floppy3TECHNICAL SPECIFICATION ETSI ETSI TS 126 074 V14.0.0 (2017-04)13GPP TS 26.074 version 14.0.0 Release 14Reference RTS/TSGS-0426074ve00 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 0
3、0017 - 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
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9、e Marks registered and owned by the GSM Association. ETSI ETSI TS 126 074 V14.0.0 (2017-04)23GPP TS 26.074 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 essenti
10、al 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 updates a
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12、hich 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 identities or
13、 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 citation
15、. ETSI ETSI TS 126 074 V14.0.0 (2017-04)33GPP TS 26.074 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 5g34 General . 6g35
16、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 sequences for source c
17、ontrolled rate operation . 9g37.1 Codec configuration . 9g37.2 Test Sequences . 9g37.2.1 Test sequences for background noise estimation 9g37.2.2 Test sequences for pitch, tone and complex signal detection . 10g37.2.3 Real speech and tones . 10g37.2.4 Test sequence for signal-to-noise ratio estimatio
18、n 10g38 Sequences for finding the 20 ms framing of the adaptive multi-rate speech encoder 10g38.1 Bit synchronisation . 10g38.2 Frame synchronisation . 11g38.3 Formats and sizes of the synchronisation sequences 11g39 Trau Testing with 8 Bit A- and -law PCM Test Sequences . 12g3Annex A (informative):
19、 Change history . 13g3History 14g3ETSI ETSI TS 126 074 V14.0.0 (2017-04)43GPP TS 26.074 version 14.0.0 Release 14Foreword This Technical Specification (TS) has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within th
20、e TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, 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 in
21、formation; 2 presented to TSG for approval; 3 or greater 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 bee
22、n incorporated in the document. ETSI ETSI TS 126 074 V14.0.0 (2017-04)53GPP TS 26.074 version 14.0.0 Release 141 Scope 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-r
23、ate speech transcoder (TS 26.090 2), voice activity detection (TS 26.094 5), comfort noise (TS 26.092 3), and source controlled rate operation (TS 26.093 4). 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
24、References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a
25、GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document. 1 3GPP TS 26.071: “AMR Speech Codec; General Description“. 2 3GPP TS 26.090: “AMR Speech Codec; Speech Transcoding Functions“. 3 3GPP TS 26.092: “AMR Speech C
26、odec; Comfort Noise Aspects“. 4 3GPP TS 26.093: “AMR Speech Codec; Source Controlled Rate Operation“. 5 3GPP TS 26.094: “AMR Speech Codec; Voice Activity Detector“. 6 3GPP TS 26.091: “AMR Speech Codec; Error Concealment of Lost Frames“. 7 3GPP TS 26.073: “AMR Speech Codec; ANSI C-code“. 8 3GPP TS 46
27、.054: “Test sequences for the GSM Enhanced Full Rate (EFR) speech codec“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TS 26.090 2, TS 26.091 6, TS 26.092 3, TS 26.093 4 and TS 26.094 5 apply. 3.2 Abbreviations For the p
28、urposes of the present document, the following abbreviations apply: T.B.A ETSI ETSI TS 126 074 V14.0.0 (2017-04)63GPP TS 26.074 version 14.0.0 Release 144 General Digital test sequences are necessary to test for a bit exact implementation of the adaptive multi-rate speech transcoder (TS 26.090 2), v
29、oice activity detection (TS 26.094 5), comfort noise generation (TS 26.092 3), and source controlled rate operation (TS 26.093 4). The test sequences may also be used to verify installations of the ANSI C code in TS 26.073 7. Clause 5 describes the format of the files which contain the digital test
30、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
31、test. Clause 9 describes the alternative acceptance testing of the speech encoder and decoder in the TRAU by means of 8 bit A- or -law compressed test sequences on the A-Interface. 5 Test sequence format This clause provides information on the format of the digital test sequences for the GSM adaptiv
32、e multi-rate speech transcoder (TS 26.090 2), voice activity detection (TS 26.094 5), comfort noise generation (TS 26.092 3), and source controlled rate operation (TS 26.093 4). 5.1 File format The test sequence files in PC (little-endian) byte order are provided in archive files (ZIP format) which
33、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 speech decoder: *.COD - Files for comparison with the decoder output: *.OUT - One mode control
34、 file for the mode switching test T21.MOD All file formats are described in TS 26.073 7. 5.2 Codec homing Each *.INP file includes two homing frames (see TS 26.073 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
35、. In the case of a correct installation of the ANSI-C simulation (TS 26.073 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 an
36、d 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 frames in the *.COD files is to reset the speech decoder state variables to their initial valu
37、e. In the case of a correct installation of the ANSI-C simulation (TS 26.073 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 a
38、nd 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 126 074 V14.0.0 (2017-04)73GPP TS 26.074 version 14.0.0 Release 146 Speech codec test sequences This clause describ
39、es the test sequences designed to exercise the adaptive multi-rate speech transcoder (TS 26.090 2). 6.1 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-two encoder
40、 input sequences are provided. Note that for the input sequences T00.INP to T03.INP, the amplitude figures are given in 13-bit precision. The active speech levels are given in dBov. - T00.INP - Synthetic harmonic signal. The pitch delay varies slowly from 18 to 143.5 samples. The minimum and maximum
41、 amplitudes are -997 and +971. - T01.INP - Synthetic harmonic signal. The pitch delay varies slowly from 144 down to 18.5 samples. Amplitudes at saturation point -4096 and +4095. - T02.INP - Sinusoidal sweep varying from 150 Hz to 3400 Hz. Amplitudes 1250. - T03.INP - Sinusoidal sweep varying from 1
42、50 Hz to 3400 Hz. Amplitudes 4000. - T04.INP - Female speech, active speech level: -19.4 dBov, flat frequency response. - T05.INP - Male speech, active speech level: -18.7 dBov, flat frequency response. - T06.INP - Female speech, ambient noise, active speech level: -35.0 dBov, flat frequency respons
43、e. - T07.INP - Female speech, ambient noise, active speech level: -25.0 dBov, flat frequency response. - T08.INP - Female speech, ambient noise, active speech level: -15.6 dBov, flat frequency response. - T09.INP - Female speech, car noise, active speech level: -35.5 dBov, flat frequency response. -
44、 T10.INP - Female speech, car noise, active speech level: -26.1 dBov, flat frequency response. - T11.INP - Female speech, car noise, active speech level: -15.8 dBov, flat frequency response. - T12.INP - Male speech, ambient noise, active speech level: -34.9 dBov, flat frequency response. - T13.INP -
45、 Male speech, ambient noise, active speech level: -24.8 dBov, flat frequency response. - T14.INP - Male speech, ambient noise, active speech level: -15.0 dBov, flat frequency response. - T15.INP - Male speech, babble noise, active speech level: -34.1 dBov, flat frequency response. - T16.INP - Male s
46、peech, babble noise, active speech level: -24.3 dBov, flat frequency response. - T17.INP - Male speech, babble noise, active speech level: -14.4 dBov, flat frequency response. - T18.INP - Female speech, ambient noise, active speech level: -26.0 dBov, modified IRS frequency response, with many zero f
47、rames. - T19.INP - Male speech, ambient noise, active speech level: -36.0 dBov, modified IRS frequency response, with many zero frames. - T20.INP - Sequence for exercising the LPC vector quantisation codebooks and ROM tables of the codec. - T21.INP - Speech sequence for mode switching test. ETSI ETS
48、I TS 126 074 V14.0.0 (2017-04)83GPP TS 26.074 version 14.0.0 Release 14The output using these input 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 122, 102, 795, 74, 67, 59, 515,
49、 or 475. The T00.INP and T01.INP sequences were designed to test the pitch lag of the GSM adaptive multi-rate speech encoder. In a correct implementation, the resulting speech encoder output parameters 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 outpu
