SIST EN 301 250 V4.0.1:2003

Digital cellular telecommunications system (Phase 2) (GSM); Test sequences for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.54 version 4.0.1)

EN created for GSM Phase2 MS type approval purposes (a revision of GSM Phase 2+ ETS)

Digitalni celični telekomunikacijski sistem (faza 2) – Preskušalna zaporedja pri izboljšanem kodeku za govor s polno hitrostjo (EFR) sistema GSM (GSM 06.54, različica 4.0.1)

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.50 - Global System for Mobile Communication (GSM)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Mandate: T-172
• Ref Project: ETSI EN 301 250 V4.0.1 (1998-09) - Digital cellular telecommunications system (Phase 2) (GSM); Test sequences for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.54 version 4.0.1)

Standards Content (Sample)

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 4.0.1)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 301 250 Version 4.0.1SIST EN 301 250 V4.0.1:2003en01-december-2003SIST EN 301 250 V4.0.1:2003SLOVENSKI
STANDARD



SIST EN 301 250 V4.0.1:2003



EN 301 250 V4.0.1 (1998-09)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 4.0.1)SIST EN 301 250 V4.0.1:2003



ETSIEN 301 250 V4.0.1 (1998-09)2GSM 06.54 version 4.0.1ReferenceDEN/SMG-110654P (bko0200o.PDF)KeywordsEFR, digital cellular telecommunications system,Global System for Mobile communications(GSM), speechETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: [phone]
Fax: [phone]Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/[e-mail]://www.etsi.frhttp://www.etsi.orgCopyright 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 1998.All rights reserved.SIST EN 301 250 V4.0.1:2003



ETSIEN 301 250 V4.0.1 (1998-09)3GSM 06.54 version 4.0.1ContentsIntellectual Property Rights.4Foreword.41Scope.52Normative references.53Definitions and abbreviations.53.1Definitions.53.2Abbreviations.54General.65Test sequence format.65.1File format.65.2Codec homing.76Speech codec test sequences.76.1Codec configuration.86.2Speech codec test sequences.86.2.1Speech encoder test sequences.86.2.2Speech decoder test sequences.96.2.3Codec homing sequence.97DTX test sequences.117.1Codec configuration.117.2DTX test sequences.117.2.1Predictor values computation.127.2.2Spectral comparison.127.2.3Threshold adaptation.127.2.4Periodicity detection.127.2.5Tone detection.127.2.6Safety and initialisation.127.2.7Comfort noise test sequence.127.2.8Real speech and tones.128Sequences for finding the 20 ms framing of the GSM enhanced full rate speech encoder.138.1Bit synchronisation.138.2Frame synchronisation.138.3Formats and sizes of the synchronisation sequences.149Trau Testing with 8 Bit A- and µ-law PCM Test Sequences.15History.18SIST EN 301 250 V4.0.1:2003



ETSIEN 301 250 V4.0.1 (1998-09)4GSM 06.54 version 4.0.1Intellectual 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.fr/ipr or 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)Technical Committee of the European Telecommunications Standards Institute (ETSI).Test sequences for a bit exact implementation of the Enhanced Full Rate (EFR) speech transcoder are contained in thearchive file1) which accompanies the present document.The archive contains ZIP compressed files, as follows:Disk1_8EN 301 250 clause 10: Test sequences for the GSM Enhanced Full Rate (EFR) speech codec;Speech test sequences TEST0.xxx to TEST8.xxx.Disk2_8EN 301 250
clause 10: Test sequences for the GSM Enhanced Full Rate (EFR) speech codec;Speech test sequences TEST09.xxx to TEST16.xxx.Disk3_8EN 301 250
clause 10: Test sequences for the GSM Enhanced Full Rate (EFR) speech codec;Speech test sequences TEST17.xxx to TEST20.xxx, Codec homing and synchronisationsequences.Disk4_8EN 301 250
clause 10: Test sequences for the GSM Enhanced Full Rate (EFR) speech codec;DTX test sequences.Disk5_8 toEN 301 250
clause 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.This EN specifies the digital test sequences for the GSM enhanced full rate speech codect for the digital cellulartelecommunications system.National transposition datesDate of latest announcement of this EN (doa):3 April 1998Date of latest publication of new National Standardor endorsement of this EN (dop/e):30 June 1998Date of withdrawal of any conflicting National Standard (dow):31 December 1998Date of adoption of this EN:31 December 1998
1)The archive is contained in the compressed file named "bko0200o.zip". Other file formats are available on request.SIST EN 301 250 V4.0.1:2003



ETSIEN 301 250 V4.0.1 (1998-09)5GSM 06.54 version 4.0.11ScopeThis EN specifies the digital test sequences for the GSM enhanced full rate speech codec. These sequences test for a bitexact implementation of the enhanced full rate speech transcoder (GSM 06.60 (EN 301 245) [2]), Voice ActivityDetection (GSM 06.82 (EN 301 249) [6]), comfort noise (GSM 06.62 (EN 301 247) [4]) and the discontinuoustransmission (GSM 06.81 (EN 301 248) [5]).2Normative referencesThis EN incorporates by dated and undated reference, provisions from other publications. These normative referencesare cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequentamendments to or revisions of any of these publications apply to this EN only when incorporated in it by amendment orrevision. For undated references, the latest edition of the publication referred to applies.[1]GSM 01.04 (ETR 100): "Digital cellular telecommunication system (Phase 2); Abbreviations andacronyms".[2]GSM 06.60 (EN 301 245): "Digital cellular telecommunications system (Phase 2); Enhanced FullRate (EFR) speech transcoding".[3]GSM 06.61 (EN 301 246): "Digital cellular telecommunications system (Phase 2); Substitution andmuting of lost frames for Enhanced Full Rate (EFR) speech traffic channels".[4]GSM 06.62 (EN 301 247): "Digital cellular telecommunications system (Phase 2); Comfort noiseaspects for Enhanced Full Rate (EFR) speech traffic channels".[5]GSM 06.81 (EN 301 248): "Digital cellular telecommunications system (Phase 2); DiscontinuousTransmission (DTX) for Enhanced Full Rate (EFR) speech traffic channels".[6]GSM 06.82 (EN 301 249): "Digital cellular telecommunications system (Phase 2); Voice ActivityDetection (VAD) for Enhanced Full Rate (EFR) speech traffic channels".[7]GSM 06.53 (EN 301 244): "Digital cellular telecommunications system (Phase 2); ANSI-C codefor the GSM Enhanced Full Rate (EFR) speech codec".[8]GSM 06.51 (EN 301 243): "Digital cellular telecommunications system (Phase 2); Enhanced FullRate (EFR) speech coding functions; General description".3Definitions and abbreviations3.1DefinitionsDefinition of terms used in this EN can be found in GSM 06.60 (EN 301 245) [2], GSM 06.61 (EN 301 246) [3],GSM 06.62 (EN 301 247) [4], GSM 06.81 (EN 301 248) [5] and GSM 06.82 (EN 301 249) [6].3.2AbbreviationsFor the purpose of this EN the following abbreviations apply.ETSEuropean Telecommunication StandardGSMGlobal System for Mobile communicationsFor abbreviations not given in this subclause see GSM 01.04 (ETR 100) [1].SIST EN 301 250 V4.0.1:2003



ETSIEN 301 250 V4.0.1 (1998-09)6GSM 06.54 version 4.0.14GeneralDigital test sequences are necessary to test for a bit exact implementation of the enhanced full rate speech transcoder(GSM 06.60 (EN 301 245) [2]), Digital test Voice Activity Detection (GSM 06.82 (EN 301 249) [6]), comfort noise(GSM 06.62 (EN 301 247) [4]) and the discontinuous transmission (GSM 06.81 (EN 301 248) [5]).The test sequences may also be used to verify installations of the ANSI C code in GSM 06.53 (EN 301 244) [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 file2) 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 (EN 301 245) [2]), Voice Activity Detection (GSM 06.82 (EN 301 249) [6]), comfort noise(GSM 06.62 (EN 301 247) [4]) and the discontinuous transmission (GSM 06.81 (EN 301 248) [5]).5.1File formatThe test sequence files are provided in compressed archive files3).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:*.OUTThe *.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 (EN 301 245) [2] for the order of occurrence and bit allocation of speechparameters within the speech frame of 244 bits/20 ms.The samples in the encoder input signal and in the decoder output signal are left justified.
2)The archive is contained in the compressed file named "bko0200o.zip". Other file formats are available on request.3)The archive is contained in the compressed file named "bko0200o.zip". Other file formats are available on request.SIST EN 301 250 V4.0.1:2003



ETSIEN 301 250 V4.0.1 (1998-09)7GSM 06.54 version 4.0.15.2Codec 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 (EN 301 244) [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 frameis undefined and need not be identical to the first frame in the *.COD file, but all remaining speech encoder outputframes shall be identical 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 (EN 301 244) [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 frameis undefined and need not be identical to first frame in the *.OUT file, but all remaining speech decoder output framesshall be identical 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 signal13Left6Speech codec test sequencesThis clause describes the test sequences designed to exercise the GSM enhanced full rate speech transcoder (GSM 06.60(EN 301 245) [2]).SIST EN 301 250 V4.0.1:2003



ETSIEN 301 250 V4.0.1 (1998-09)8GSM 06.54 version 4.0.16.1Codec 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 level: -34.9 dBov, flat frequency response.-TEST13.INP - Male
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