ETSI EN 300 725 V6.0.1 (1999-09)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); Test sequences for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.54 version 6.0.1 Release 1997)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 725 Version 6.0.1SIST EN 300 725 V6.0.1:2003en01-december-2003SIST EN 300 725 V6.0.1:2003SLOVENSKI
STANDARD
EN 300 725 V6.0.1 (1999-09)European Standard (Telecommunications series)Digital cellular telecommunications system (Phase 2+);Test sequences for the GSM Enhanced Full Rate (EFR)speech codec(GSM 06.54 version 6.0.1 Release 1997)GLOBAL SYSTEM
FOR MOBILE COMMUNICATIONSRSIST EN 300 725 V6.0.1:2003

ETSIEN 300 725 V6.0.1 (1999-09)2(GSM 06.54 version 6.0.1 Release 1997)ReferenceDEN/SMG-110654Q6 (6po0300o.PDF)KeywordsDigital cellular telecommunications system,Global System for Mobile communications (GSM)ETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/88Internetsecretariat@etsi.frIndividual copies of this ETSI deliverablecan be downloaded fromhttp://www.etsi.orgIf you find errors in the present document, send yourcomment to: editor@etsi.frCopyright NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1999.All rights reserved.SIST EN 300 725 V6.0.1:2003

ETSIEN 300 725 V6.0.1 (1999-09)3(GSM 06.54 version 6.0.1 Release 1997)ContentsIntellectual Property Rights.4Foreword.41Scope.62References.63Definitions and abbreviations.73.1Definitions.73.2Abbreviations.74General.75Test sequence format.75.1File format.75.2Codec homing.86Speech codec test sequences.96.1Codec configuration.96.2Speech codec test sequences.96.2.1Speech encoder test sequences.96.2.2Speech decoder test sequences.106.2.3Codec homing sequence.107DTX test sequences.127.1Codec configuration.127.2DTX test sequences.127.2.1Predictor values computation.137.2.2Spectral comparison.137.2.3Threshold adaptation.137.2.4Periodicity detection.137.2.5Tone detection.137.2.6Safety and initialisation.137.2.7Comfort noise test sequence.137.2.8Real speech and tones.138Sequences for finding the 20 ms framing of the GSM enhanced full rate speech encoder.148.1Bit synchronisation.148.2Frame synchronisation.158.3Formats and sizes of the synchronisation sequences.159Trau Testing with 8 Bit A- and µ-law PCM Test Sequences.16Annex A (informative):Change Request History.19History.20SIST EN 300 725 V6.0.1:2003

ETSIEN 300 725 V6.0.1 (1999-09)4(GSM 06.54 version 6.0.1 Release 1997)Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respectof ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on theETSI Web server (http://www.etsi.org/ipr).Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guaranteecan be given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server)which are, or may be, or may become, essential to the present document.ForewordThis European Standard (Telecommunications series) has been produced by the Special Mobile Group (SMG).Test sequences for a bit exact implementation of the Enhanced Full Rate (EFR) speech transcoder are contained in thearchive 6po0300o.ZIP which accompanies the present document.The archive contains ZIP compressed files, as follows:Disk1_8Clause 10: Test sequences for the GSM Enhanced Full Rate (EFR) speech codec; Speech testsequences TEST0.xxx to TEST8.xxx.Disk2_8Clause 10: Test sequences for the GSM Enhanced Full Rate (EFR) speech codec; Speech testsequences TEST09.xxx to TEST16.xxx.Disk3_8Clause 10: Test sequences for the GSM Enhanced Full Rate (EFR) speech codec; Speech testsequences TEST17.xxx to TEST20.xxx, Codec homing and synchronisation sequences.Disk4_8Clause 10: Test sequences for the GSM Enhanced Full Rate (EFR) speech codec; DTX testsequences.Disk5_8 toClause 10: Test sequences for the GSM Enhance Full Rate (EFR) speech codec; 8 bitDisk8_8A- and µ-law compressed test sequences for alternative TRAU testing.The present document specifies the digital test sequences for the GSM enhanced full rate speech codect for the digitalcellular telecommunications system.The contents of the present document is subject to continuing work within SMG and may change following formal SMGapproval. Should SMG modify the contents of the present document it will be re-released with an identifying change ofrelease date and an increase in version number as follows:Version 6.x.ywhere:6indicates Release 1997 of GSM Phase 2+xthe second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates,etc.ythe third digit is incremented when editorial only changes have been incorporated in the specification.SIST EN 300 725 V6.0.1:2003

ETSIEN 300 725 V6.0.1 (1999-09)5(GSM 06.54 version 6.0.1 Release 1997)Proposed national transposition datesDate of adoption of this EN:3 September 1999Date of latest announcement of this EN (doa):31 December 1999Date of latest publication of new National Standardor endorsement of this EN (dop/e):30 June 2000Date of withdrawal of any conflicting National Standard (dow):30 June 2000SIST EN 300 725 V6.0.1:2003

ETSIEN 300 725 V6.0.1 (1999-09)6(GSM 06.54 version 6.0.1 Release 1997)1ScopeThe present document specifies the digital test sequences for the GSM enhanced full rate speech codec. These sequencestest for a bit exact implementation of the enhanced full rate speech transcoder (GSM 06.60 [2]), Voice ActivityDetection (GSM 06.82 [6]), comfort noise (GSM 06.62 [4]) and the discontinuous transmission (GSM 06.81 [5]).2ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the presentdocument.· References are either specific (identified by date of publication, edition number, version number, etc.) ornon-specific.· For a specific reference, subsequent revisions do not apply.· For a non-specific reference, the latest version applies.· A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the samenumber.· For this Release 1997 document, references to GSM documents are for Release 1997 versions (version 6.x.y).[1]GSM 01.04: "Digital cellular telecommunication system (Phase 2+); Abbreviations and acronyms".[2]GSM 06.60: "Digital cellular telecommunications system (Phase 2+); Enhanced Full Rate (EFR)speech transcoding".[3]GSM 06.61: "Digital cellular telecommunications system (Phase 2+); Substitution and muting oflost frames for Enhanced Full Rate (EFR) speech traffic channels".[4]GSM 06.62: "Digital cellular telecommunications system (Phase 2+); Comfort noise aspects forEnhanced Full Rate (EFR) speech traffic channels".[5]GSM 06.81: "Digital cellular telecommunications system (Phase 2+); Discontinuous Transmission(DTX) for Enhanced Full Rate (EFR) speech traffic channels".[6]GSM 06.82: "Digital cellular telecommunications system (Phase 2+); Voice Activity Detection(VAD) for Enhanced Full Rate (EFR) speech traffic channels".[7]GSM 06.53: "Digital cellular telecommunications system (Phase 2+); ANSI-C code for the GSMEnhanced Full Rate (EFR) speech codec".[8]GSM 06.51: "Digital cellular telecommunications system (Phase 2+); Enhanced Full Rate (EFR)speech coding functions; General description".SIST EN 300 725 V6.0.1:2003

ETSIEN 300 725 V6.0.1 (1999-09)7(GSM 06.54 version 6.0.1 Release 1997)3Definitions and abbreviations3.1DefinitionsDefinition of terms used in the present document can be found in GSM 06.60 [2], GSM 06.61 [3], GSM 06.62 [4],GSM 06.81 [5] and GSM 06.82 [6].3.2AbbreviationsFor the purpose of the present document the following abbreviations apply.ETSEuropean Telecommunication StandardGSMGlobal System for Mobile communicationsFor abbreviations not given in this subclause see GSM 01.04 [1].4GeneralDigital test sequences are necessary to test for a bit exact implementation of the enhanced full rate speech transcoder(GSM 06.60 [2]), Digital test Voice Activity Detection (GSM 06.82 [6]), comfort noise (GSM 06.62 [4]) and thediscontinuous transmission (GSM 06.81 [5]).The test sequences may also be used to verify installations of the ANSI C code in GSM 06.53 [7].Clause 5 describes the format of the files which contain the digital test sequences. Clause 6 describes the test sequencesfor the speech transcoder. Clause 7 describes the test sequences for the VAD, comfort noise and discontinuoustransmission.Clause 8 describes the method by which synchronisation is obtained between the test sequences and the speech codecunder test.Clause 9 describes the alternative acceptance testing of the speech encoder and decoder in the TRAU by means of 8 bitA- or m-law compressed test sequences on the A-Interface.Electronic copies of the digital test sequences are provided as clause 10, these digital test sequences are contained in thearchive 6po0300o.ZIP which accompanies the present document.5Test sequence formatThis clause provides information on the format of the digital test sequences for the GSM enhanced full rate speechtranscoder (GSM 06.60 [2]), Voice Activity Detection (GSM 06.82 [6]), comfort noise (GSM 06.62 [4]) and thediscontinuous transmission (GSM 06.81 [5]).5.1File formatThe test sequence files are provided in archive 6po0300o.ZIP which accompanies the present document.Following decompression, four types of file are provided:-Files for input to the GSM enhanced full rate speech encoder:*.INP-Files for comparison with the encoder output:*.COD-Files for input to the GSM enhanced full rate speech decoder:*.DEC-Files for comparison with the decoder output:*.OUTSIST EN 300 725 V6.0.1:2003

ETSIEN 300 725 V6.0.1 (1999-09)8(GSM 06.54 version 6.0.1 Release 1997)The *.DEC files are generated from the corresponding *.COD files.Tables 1, 2, 3 and 4 define the formats of the four types of file.Each speech parameter within the speech frame of 244 bits/20 ms is contained in a serial string of 16 bit words, whereeach word contains the value of one bit of the parameter. In each string of n 16 bit words containing the n bits of aparameter, the most significant bit of the parameter is written first, and the least significant bit is written last. The bitvalue contained in a single 16 bit word is either 0x0000 or 0x0001 (right justified) for the binary values of “0” and “1”,respectively. See table 6 of GSM 06.60 [2] for the order of occurrence and bit allocation of speech parameters within thespeech frame of 244 bits/20 ms.The samples in the encoder input signal and in the decoder output signal are left justified.5.2Codec homingEach *.INP file includes two homing frames at the start of the test sequence. The function of these frames is to reset thespeech encoder state variables to their initial value. In the case of a correct installation of the ANSI-C simulation(GSM 06.53 [7]), all speech encoder output frames shall be identical to the corresponding frame in the *.COD file. Inthe case of a correct hardware implementation undergoing testing, the first speech encoder output frame is undefinedand need not be identical to the first frame in the *.COD file, but all remaining speech encoder output frames shall beidentical to the corresponding frames in the *.COD file.Each *.DEC file includes two homing frames at the start of the test sequence. The function of these frames is to reset thespeech decoder state variables to their initial value. In the case of a correct installation of the ANSI-C simulation(GSM 06.53 [7]), all speech decoder output frames shall be identical to the corresponding frame in the *.OUT file. Inthe case of a correct hardware implementation undergoing testing, the first speech decoder output frame is undefinedand need not be identical to first frame in the *.OUT file, but all remaining speech decoder output frames shall beidentical to the corresponding frames in the *.OUT file.Table 1: Encoder input sequence (*.INP) formatNameDescriptionNo. of bitsJustifications(n)Encoder input signal13LeftTable 2: Encoder output sequence (*.COD) formatNameDescriptionNo. of bitsJustificationSpeech parametersSPEECHSerial stream of speech parameter bitsto the channel encoder244RightAdditional informationVADSPVoice activity detection flagSP flag11RightRightTable 3: Decoder input sequence (*.DEC) formatNameDescriptionNo. of bitsJustificationAdditional informationBFIBad Frame Indicator flag1RightSpeech parametersSPEECHSerial stream of speech parameter bitsto the channel encoder244RightAdditional informationSIDTAFSilence Descriptor flagTime Alignment Flag11RightRightTable 4: Decoder output sequence (*.OUT) formatNameDescriptionNo. of bitsJustifications'(n)Decoder output signal13LeftSIST EN 300 725 V6.0.1:2003

ETSIEN 300 725 V6.0.1 (1999-09)9(GSM 06.54 version 6.0.1 Release 1997)6Speech codec test sequencesThis clause describes the test sequences designed to exercise the GSM enhanced full rate speech transcoder(GSM 06.60 [2]).6.1Codec configurationThe speech encoder shall be configured to operate in the non-DTX mode. The VAD and SP flags shall be set to 1 at thespeech encoder output.6.2Speech codec test sequencesTable 5 lists the location and size of the speech codec test sequences.6.2.1Speech encoder test sequencesTwenty-one encoder input sequences are provided. Note that for the input sequences TEST0.INP to TEST3.INP, theamplitude figures are given in 13-bit precision. The active speech levels are given in dBov.-TEST0.INP - Synthetic harmonic signal. The pitch delay varies slowly from 18 to 143.5 samples. The minimumand maximum amplitudes are -997 and +971.-TEST1.INP - Synthetic harmonic signal. The pitch delay varies slowly from 144 down to 18.5 samples.Amplitudes at saturation point -4096 and +4095.-TEST2.INP - Sinusoidal sweep varying from 150 Hz to 3400 Hz. Amplitudes ± 1250.-TEST3.INP - Sinusoidal sweep varying from 150 Hz to 3400 Hz. Amplitudes ± 4000.-TEST4.INP - Female speech, active speech level: -19.4 dBov, flat frequency response.-TEST5.INP - Male speech, active speech level: -18.7 dBov, flat frequency response.-TEST6.INP - Female speech, ambient noise, active speech level: -35.0 dBov, flat frequency response.-TEST7.INP - Female speech, ambient noise, active speech level: -25.0 dBov, flat frequency response.-TEST8.INP - Female speech, ambient noise, active speech level: -15.6 dBov, flat frequency response.-TEST9.INP - Female speech, car noise, active speech level: -35.5 dBov, flat frequency response.-TEST10.INP - Female speech, car noise, active speech level: -26.1 dBov, flat frequency response.-TEST11.INP - Female speech, car noise, active speech level: -15.8 dBov, flat frequency response.-TEST12.INP - Male speech, ambient noise, active speech leve
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