{"id":398142,"date":"2024-10-20T04:34:06","date_gmt":"2024-10-20T04:34:06","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-269-2019\/"},"modified":"2024-10-26T08:22:31","modified_gmt":"2024-10-26T08:22:31","slug":"ieee-269-2019","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-269-2019\/","title":{"rendered":"IEEE 269-2019"},"content":{"rendered":"

Revision Standard – Active. Practical methods for making electroacoustic laboratory measurements of analog and digital speech communications terminals and connected audio devices are contained in this standard. The methods are applicable to a wide variety of wired, wireless, cordless, and mobile communication terminals. Examples include Voice over Internet Protocol (VoIP), Wi-Fi\u00ae, and softphone devices. Tests applicable to connected audio devices such as wired, Bluetooth\u00ae, and universal serial bus (USB) handsets, headsets, and wearables are included. The standard contains objective metrics, subjective metrics, and subjective metric predictors. Application is in the frequency range from 20 Hz to 20 kHz.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nIEEE Std 269\u2122-2019 Front cover <\/td>\n<\/tr>\n
2<\/td>\nTitle page <\/td>\n<\/tr>\n
4<\/td>\nImportant Notices and Disclaimers Concerning IEEE Standards Documents <\/td>\n<\/tr>\n
7<\/td>\nParticipants <\/td>\n<\/tr>\n
8<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\nContents <\/td>\n<\/tr>\n
12<\/td>\nFigures <\/td>\n<\/tr>\n
14<\/td>\nTables <\/td>\n<\/tr>\n
15<\/td>\n1. Overview
1.1 Scope <\/td>\n<\/tr>\n
16<\/td>\n1.2 Purpose
1.3 How to use this standard <\/td>\n<\/tr>\n
18<\/td>\n1.4 Changes since last edition of this standard
1.5 Word usage
2. Normative references <\/td>\n<\/tr>\n
21<\/td>\n3. Definitions, acronyms, and abbreviations
3.1 Definitions <\/td>\n<\/tr>\n
29<\/td>\n3.2 Acronyms and abbreviations <\/td>\n<\/tr>\n
30<\/td>\n4. Symbols
4.1 Letter symbols <\/td>\n<\/tr>\n
31<\/td>\n4.2 Drawing symbols
5. Test equipment, fixtures, and environment
5.1 Measurement microphones <\/td>\n<\/tr>\n
32<\/td>\n5.2 Ear simulators <\/td>\n<\/tr>\n
33<\/td>\n5.3 Mouth simulators
5.4 Test fixture
5.5 Test room <\/td>\n<\/tr>\n
38<\/td>\n6. Codecs, interfaces, and test circuits
6.1 Reference codecs <\/td>\n<\/tr>\n
39<\/td>\n6.2 Interfaces to digital terminals <\/td>\n<\/tr>\n
41<\/td>\n6.3 Interfaces to digital subsystems <\/td>\n<\/tr>\n
43<\/td>\n6.4 Digital impairments
6.5 Test circuits for analog terminals <\/td>\n<\/tr>\n
47<\/td>\n6.6 Test circuits for analog subsystems <\/td>\n<\/tr>\n
49<\/td>\n6.7 Analog impairments
7. Test signals
7.1 Speech test signals <\/td>\n<\/tr>\n
51<\/td>\n7.2 Nonspeech test signals
7.3 Distortion test signals
7.4 Conditioning signals <\/td>\n<\/tr>\n
52<\/td>\n7.5 Impairment signals
7.6 \u201320 dBm0 reference signal
8. Calibration
8.1 General <\/td>\n<\/tr>\n
53<\/td>\n8.2 Measurement instruments
8.3 Measurement microphones
8.4 Ear simulator <\/td>\n<\/tr>\n
54<\/td>\n8.5 Calibration bandwidth and resolution
8.6 Electrical source <\/td>\n<\/tr>\n
55<\/td>\n8.7 Acoustic source <\/td>\n<\/tr>\n
58<\/td>\n9. Device positioning
9.1 Handset positioning <\/td>\n<\/tr>\n
60<\/td>\n9.2 Headset positioning <\/td>\n<\/tr>\n
62<\/td>\n10. Device control settings <\/td>\n<\/tr>\n
63<\/td>\n10.1 Digital terminals <\/td>\n<\/tr>\n
64<\/td>\n10.2 Digital subsystems <\/td>\n<\/tr>\n
65<\/td>\n10.3 Analog terminals <\/td>\n<\/tr>\n
67<\/td>\n10.4 Analog subsystems <\/td>\n<\/tr>\n
68<\/td>\n11. Test setup
11.1 General
11.2 Test setup diagrams <\/td>\n<\/tr>\n
70<\/td>\n11.3 Analysis parameters <\/td>\n<\/tr>\n
72<\/td>\n11.4 Device operation
11.5 Test conditions <\/td>\n<\/tr>\n
73<\/td>\n12. Measurements
12.1 Combining tests
12.2 Frequency response <\/td>\n<\/tr>\n
76<\/td>\n12.3 Output level <\/td>\n<\/tr>\n
78<\/td>\n12.4 Receive conversational gain <\/td>\n<\/tr>\n
79<\/td>\n12.5 Tonal balance <\/td>\n<\/tr>\n
80<\/td>\n12.6 Receive balance and polarity <\/td>\n<\/tr>\n
81<\/td>\n12.7 Echo <\/td>\n<\/tr>\n
86<\/td>\n12.8 Self-noise <\/td>\n<\/tr>\n
88<\/td>\n12.9 Level-dependent dynamics <\/td>\n<\/tr>\n
91<\/td>\n12.10 Distortion and induced artifacts <\/td>\n<\/tr>\n
94<\/td>\n12.11 Speech quality in a quiet environment
12.12 Speech and noise quality in a noisy environment <\/td>\n<\/tr>\n
95<\/td>\n12.13 Mute leakage <\/td>\n<\/tr>\n
96<\/td>\n12.14 Device delay
12.15 Stability loss <\/td>\n<\/tr>\n
97<\/td>\n12.16 Howling
12.17 Maximum acoustic output <\/td>\n<\/tr>\n
99<\/td>\n12.18 Impedance
13. Measurement data
13.1 Translations from drum reference point (DRP) to listener reference point (LRP) <\/td>\n<\/tr>\n
100<\/td>\n13.2 Band averaging <\/td>\n<\/tr>\n
101<\/td>\n13.3 Presentation of results <\/td>\n<\/tr>\n
102<\/td>\nAnnex A (normative) Analysis methods <\/td>\n<\/tr>\n
113<\/td>\nAnnex B (informative) Measurement uncertainty and tolerances <\/td>\n<\/tr>\n
115<\/td>\nAnnex C (normative) Alternative ear simulators, mouth simulators, and test fixtures <\/td>\n<\/tr>\n
118<\/td>\nAnnex D (normative) Nonspeech test signals <\/td>\n<\/tr>\n
124<\/td>\nAnnex E (normative) Distortion <\/td>\n<\/tr>\n
140<\/td>\nAnnex F (normative) Hoth and other noises <\/td>\n<\/tr>\n
154<\/td>\nAnnex G (informative) Loudness ratings (legacy) <\/td>\n<\/tr>\n
157<\/td>\nAnnex H (normative) Decibel references and conversions <\/td>\n<\/tr>\n
167<\/td>\nAnnex I (normative) Typical network and speech levels <\/td>\n<\/tr>\n
170<\/td>\nAnnex J (normative) Speech and noise quality <\/td>\n<\/tr>\n
185<\/td>\nAnnex K (informative) Wind noise <\/td>\n<\/tr>\n
192<\/td>\nAnnex L(normative) Sidetone echo <\/td>\n<\/tr>\n
193<\/td>\nAnnex M (normative) Power and voltage summations <\/td>\n<\/tr>\n
197<\/td>\nAnnex N (informative) Listener sidetone frequency response (legacy) <\/td>\n<\/tr>\n
198<\/td>\nAnnex O (informative) Conditioning for carbon transmitters (legacy) <\/td>\n<\/tr>\n
199<\/td>\nAnnex P (informative) Subjective loudness and spectral balance test procedure <\/td>\n<\/tr>\n
202<\/td>\nAnnex Q (informative) Bibliography <\/td>\n<\/tr>\n
203<\/td>\nBack cover <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Standard for Measuring Electroacoustic Performance of Communication Devices<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n2019<\/td>\n203<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":398147,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-398142","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ieee","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/398142","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/398147"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=398142"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=398142"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=398142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}