IEEE 1329 2000
$57.96
IEEE Standard Method for Measuring Transmission Performance of Handsfree Telephone Sets
| Published By | Publication Date | Number of Pages |
| IEEE | 2000 | 94 |
New IEEE Standard – Inactive – Superseded. Techniques for objective measurement of electroacoustic and voice switching characteristics of analog and digital handsfree telephones (HFTs) are provided. Due to the various characteristics of HFTs and the environments in which they operate, not all of the test procedures in this standard are applicable to all HFTs. Application of the test procedures to a typical HFTs should be determined on an individual basis.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | Title Page |
| 3 | Introduction Participants |
| 5 | CONTENTS |
| 7 | 1. Overview 1.1 Scope 1.2 Purpose |
| 8 | 1.3 Contents of this standard 1.4 How to use this standard |
| 9 | 2. References |
| 10 | 3. Definitions |
| 14 | 4. Abbreviations, acronyms, and symbols |
| 16 | 5. Test methods 5.1 General 5.2 FFT and cross-spectrum analysis |
| 17 | 5.3 Real-time filter analysis (RTA) 5.4 Sine-based analysis |
| 18 | 5.5 Simulated free-field techniques |
| 19 | 6. Test signals 6.1 General 6.2 Classifications 6.3 Modulation types |
| 20 | 6.4 Deterministic signals 6.5 Random signals |
| 21 | 6.6 Speech-like signals 6.7 Compound signals |
| 23 | 6.8 Test signal bandwidth 6.9 Signal parameter summary |
| 24 | 6.10 Signal and test method comparative summary |
| 25 | 7. Test equipment, environment, and impairments 7.1 General 7.2 Test equipment |
| 26 | 7.3 Test environment |
| 29 | 7.4 Impairments |
| 30 | 8. Test calibration 8.1 Measurement bandwidth and resolution 8.2 Send |
| 33 | 8.3 Receive and echo 9. Transmission measurements 9.1 General |
| 34 | 9.2 Positioning of HFT and test transducers |
| 37 | 9.3 Send |
| 42 | 9.4 Receive |
| 47 | 9.5 Echo path response 10. Voice switching measurements 10.1 General 10.2 Classification |
| 48 | 10.3 Switching parameters 10.4 Test conditions |
| 49 | 10.5 Test parameters |
| 55 | 11. Acoustic echo canceller measurements |
| 56 | 11.1 Test signals |
| 57 | 11.2 Test conditions 11.3 Round trip EPD 11.4 TCL—single talk |
| 58 | 11.5 Convergence time (Tc) 11.6 Temporally weighted terminal coupling loss—double talk (TCLTDT) 11.7 Send speech attenuation during double talk (ASDT) |
| 59 | 11.8 Receive speech attenuation during double talk (ARDT) |
| 60 | 11.9 Send speech front end clipping time during double talk (TSFDT) 11.10 Receive speech front end clipping time during double talk (TRFDT) |
| 61 | Annex A—Simulated speech generator |
| 63 | Annex B—TDS sweep with noise bursts |
| 64 | Annex C—Hoth room noise |
| 67 | Annex D—Useful conversion procedures |
| 69 | Annex E—Recommended test bed |
| 74 | Annex F—Detailed test methodology for temporally weighted TCL |
| 77 | Annex G—TCLT test algorithm |
| 81 | Annex H—Double-talk testing |
| 90 | Annex I—HFT mi crophones |
| 91 | Annex J—1/3 octave passbands |
| 92 | Annex K—DRP TO ERP corrections for HATS receive measurements |
| 94 | Annex L—Bibliography |
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