IEEE 1329 2010

$39.54

IEEE Standard Method for Measuring Transmission Performance of Speakerphones

Published By	Publication Date	Number of Pages
IEEE	2010	101

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Description

Revision Standard – Active. This standard provides techniques for objective measurement of electroacoustic and voice-switching characteristics of speakerphones that connect directly or indirectly to an analog or digital telephone network. Due to the various characteristics of speakerphones and the environments in which they operate, not all of the test procedures in this standard are applicable to all speakerphones. Application of the test procedures to atypical speakerphones should be determined on an individual basis.

PDF Catalog

PDF Pages	PDF Title
1	Cover
3	Title page
6	Introduction Notice to users Laws and regulations Copyrights Updating of IEEE documents
7	Errata Interpretations Patents Participants
9	Contents
11	Important notice 1. Overview 1.1 General 1.2 Scope
12	1.3 Purpose 1.4 Contents of standard 2. Normative references
13	3. Definitions
18	4. Abbreviations, acronyms, and symbols
21	5. Test equipment, environment, and impairments 5.1 General 5.2 Test equipment
22	5.3 Test environment
26	5.4 Impairments
27	6. Test calibration 6.1 Electrical test signal calibration
28	7. Transmission measurements 7.1 General
30	7.2 Choice of measurement transducers
31	7.3 Positioning of speakerphone and test transducers
32	7.4 Test position guidelines
37	7.5 Receive
44	7.6 Send
49	7.7 Echo path response
52	8. Voice-switching time (half-duplex) measurements 8.1 General
53	8.2 Classification 8.3 Switching parameters
54	8.4 Test conditions
55	8.5 Test parameters
62	9. Acoustic echo control (full- or half-duplex) measurements 9.1 General
63	9.2 Test signals 9.3 Test conditions 9.4 Round-trip EPD
64	9.5 TCL—single-talk 9.6 Convergence time (TC)
65	9.7 Temporally weighted terminal coupling loss during double-talk (TCLTDT) 9.8 Receive speech attenuation during double-talk (ARDT)
66	9.9 Send speech attenuation during double-talk (ASDT)
67	9.10 Receive speech front-end clipping time during double-talk (TRFDT) 9.11 Send speech front-end clipping time during double-talk (TSFDT)
68	Annex A (normative) Recommended test bed
74	Annex B (normative) Detailed test methodology for TCLT
78	Annex C (normative) TCLT test algorithm
82	Annex D (normative) Double-talk testing
92	Annex E (informative) Microphones
93	Annex F (normative) Power and amplitude summations
97	Annex G (normative) Preferred listening levels
100	Annex H (normative) Multiple send and receive frequency response test positions
101	Annex I (informative) Bibliography