CTA 音频测试绝佳资料(MTK).pdf

ACQUA Acoustic TestACQUA Acoustic Test presentationpresentation MTK WCP_H/W Seven_Yang PDF created with pdfFactory trial version Outline：： 1、Spec. Intro. 2、Hardware environment (CMD55) 3、Software environment (ACQUA+META) 4、Test items (CTTL) 5、Attention items PDF created with pdfFactory trial version 1、、Spec. Intro. Test Items: Sending frequency response (SFR) Sending loudness rating (SLR) Receiving frequency response (RFR) Receiving loudness rating (RLR) Side tones: Side tone masking rating (STMR) Listener side tone rating (LSTR) Telephone acoustic coupling loss (TAL): Echo loss (EL) Stability margin Sending distortion Receiving distortion Sidetone distortion Idle channel noise: Sending Receiving Ambient noise rejection The red items are CTTL test items CTTL: China Telecommunication Technology Labs. PDF created with pdfFactory trial version 46 dB 40 dB 40 dB 46 dBEcho Loss 13 +/- 5 dBXX13 +/- 5 dBSTMR - 54dBPaXX- 54dBPamaximum - 57dBPaXX- 57dBPanominalIdle noise receivin g - 64dBm0pXX- 64dBm0pIdle noise sending XXX - 13 dBX 15 + nominal - 13 dBmaximum 2 +/-3 dB6 +12/- 4 dB2 +/-4 dB2 +/-3 dBnominal RLR 8 +/-3 dB13 +/- 4 dB13 +/- 4 dB8 +/-3 dBSLR Headset Handheld hands- free Desktop and Vehicle- mounted hands- free Handset Spec. Handset modeLoudspeaker modeHeadset mode We only need To Test Handset mode PDF created with pdfFactory trial version PDF created with pdfFactory trial version YD/T1215- 2002 6.3.1 SFR P.50 RF, Index: 1 GSM mobile RF tests based on YD/T 1215- 2002\ 12th octave FFT Size:4096 Overlap:75.0% Hanning Ref.: ravsndrf.fftL/dB[V/Pa] - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 5 f/Hz120200300 400100016002400 4000 SND(1)- Ref lower upper Absolute minimal distance 3.69 dB at 2883.7 Hz Ok Ok YD/T1215- 2002 6.3.2 SLR P.501 RF, Index: 1 GSM mobile RF tests based on YD/T 1215- 2002\ 3rd octave FFT Size:4096 Overlap:75.0% Hanning Ref.: rcsslrrf.fftL/dB[V/Pa] - 50 - 40 - 30 - 20 - 10 0 10 f/Hz120200300 400100016002400 4000 SND(1)- Ref SLR: 9.06 dB Ok Ok SFR (Sending frequency response) SLR (Sending loudness rating) Spec. 8+/-3dB PDF created with pdfFactory trial version PDF created with pdfFactory trial version YD/T1215- 2002 6.3.3 RFR P.50 RF, Index: 1 GSM mobile RF tests based on YD/T 1215- 2002\ 12th octave FFT Size:4096 Overlap:75.0% Hanning Ref.: ravrcvrf.fftL/dB[Pa/V] - 20 - 15 - 10 - 5 0 5 10 15 20 f/Hz120200300 400100016002400 4000 RCV(2)- Ref lower upper Absolute minimal distance 0.65 dB at 305.9 Hz Ok Ok YD/T1215- 2002 6.3.4 RLR nom. vol. P.501 RF, Index: 1 GSM mobile RF tests based on YD/T 1215- 2002\ 3rd octave FFT Size:4096 Overlap:75.0% Hanning Ref.: rcsrlrrf.fftL/dB[Pa/V] - 30 - 20 - 10 0 10 20 30 f/Hz120200300 400100016002400 4000 RCV(2)- Ref RLR: 0.95 dB Ok Ok YD/T1215- 2002 6.3.4 RLR max. vol. P.501 RF, Index: 1 GSM mobile RF tests based on YD/T 1215- 2002\ 3rd octave FFT Size:4096 Overlap:75.0% Hanning Ref.: rcsrlrrf.fftL/dB[Pa/V] - 30 - 20 - 10 0 10 20 30 f/Hz120200300 400100016002400 4000 RCV(2)- Ref RLR: - 11.03 dB Ok Ok RFR (Receiving frequency response) RLR (Receiving loudness rating) MAX Vol. Nom Vol. Spec. -13dB Spec. 2+/-3dB PDF created with pdfFactory trial version PDF created with pdfFactory trial version PDF created with pdfFactory trial version YD/T1215- 2002 6.3.5 STMR P.501 RF, Index: 1 GSM mobile RF tests based on YD/T 1215- 2002\ 3rd octave FFT Size:4096 Overlap:75.0% Hanning Ref.: rcsstmrf.fftL/dB - 40 - 30 - 20 - 10 0 10 20 f/Hz10020050020005000 RCV(2)- Ref STMR (unsealed): 12.10 dB Ok Ok YD/T1215- 2002 6.3.7 Sending distortion RF, Index: 1 GSM mobile RF tests based on YD/T 1215- 2002\ Spectrum avg. FFT Size:4096 Overlap:75.0% Hanning L/dB[V] - 100 - 75 - 50 - 25 0 25 50 f/Hz10020050020005000 SND(1) Level: - 35.0 dB Freq.: 1020 Hz Distortion SND(1): 29.69 dB (3.28%) Ok43.27 dB (0.69%)7.8 dB (10.0 dB) Ok43.81 dB (0.64%)7.0 dB Ok49.60 dB (0.33%)0.0 dB Ok50.64 dB (0.29%)- 10.0 dB Ok41.35 dB (0.86%)- 20.0 dB Ok33.95 dB (2.01%)- 30.0 dB Ok29.69 dB (3.28%)- 35.0 dB Dist.(SND(1))Gain side-tone masking rating Sending distortion Spec. 13+/-5dB PDF created with pdfFactory trial version 2、Hardware environment (CMD55) MFE VI HLC HMA IV Acoustic Chamber Artificial Mouth Artificial Ear CMD55 PDF created with pdfFactory trial version Acoustic chamber Artificial Ear Artificial Mouth LRGP—Test Head Notice the type in report PDF created with pdfFactory trial version Instrument Description: CMD55: Radio communication tester. MFE VI: Measurement frontend. MFE IV forms the connecting link between data acquisition via the artificial mouth/ear and digital speech quality analysis with ACQUA. HMA IV:HEAD Mouth Amplifier. It is used as an extension of MFE VI to control the artificial mouth. HLC I:(CMD55 use only) HLC I is a bi-directional stereo interface for matching the input and output levels of the unbalanced connectors of the HEAD acoustics measurement frontend MFE VI and the radio communication tasters CMD55 or CMU200. PDF created with pdfFactory。