1、 IEC 61606-3Edition 1.0 2008-10INTERNATIONAL STANDARD Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 3:Professional use IEC 61606-3:2008(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK S
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9、1 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 61606-3Edition 1.0 2008-10INTERNATIONAL STANDARD Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 3:P
10、rofessional use INTERNATIONAL ELECTROTECHNICAL COMMISSION XICS 33.160.30 PRICE CODEISBN 2-8318-1008-6 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61606-3 IEC:2
11、008(E)CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Terms and definitions.7 4 Rated values.10 5 Measuring conditions.10 5.1 Environmental conditions.10 5.2 Power supply.10 5.3 Test signal frequencies.11 5.4 Standard settings.11 5.5 Preconditioning.11 5.6 Measuring instruments.11 5.6.1 Gen
12、eral.11 5.6.2 Signal generator.11 5.6.3 Signal analyzer.12 6 Measurement methods.16 6.1 Overview.16 6.2 General characteristics.16 6.2.1 Linear response.16 6.2.2 Amplitude non-linearity.21 6.2.3 Noise.26 6.2.4 Interference products.28 6.2.5 Sampling effects.30 6.3 Input/output characteristics.32 6.3
13、.1 Analogue input characteristics.32 6.3.2 Analogue output characteristics.34 6.3.3 Digital input characteristics.35 6.3.4 Digital output characteristics.36 Annex A(normative)Alternative measurement methods.37 Bibliography.41 Figure 1 Signal generator.11 Figure 2 Wideband amplitude.13 Figure 3 In-ba
14、nd amplitude.13 Figure 4 Out-of-band amplitude.13 Figure 5 Selective amplitude.13 Figure 6 Residual amplitude.13 Figure 7 Weighted amplitude.14 Figure 8 Gain method.16 Figure 9 Frequency response method.17 Figure 10 Maximum input and output amplitude method.18 Figure 11 Distortion-and-noise method.2
15、1 Figure 12 Distortion and noise versus frequency method.21 Figure 13 Distortion and noise versus amplitude method.22 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.61606-3 IEC:2008(E)3 Figure 14 Individual harmonic distortion method.
16、22 Figure 15 Total harmonic distortion method.22 Figure 16 Largest spurious signal method.23 Figure 17 Intermodulation method.23 Figure 18 Intermodulation method.24 Figure 19 Amplitude-dependent gain method.25 Figure 20 Intrinsic signal modulation products method.25 Figure 21 Low-amplitude noise modulation method.26 Figure 22 Idle-channel noise method.26 Figure 23 Idle-channel noise spectrum method.27 Figure 24 Dynamic range method.27 Figure 25 Out-of-band noise ratio method.27 Figure 26 Channel