Your search returned 109 results.

ISO 11904-2. Acoustics - determination of sound immission from sound sources placed close to the ear-. Part 2: Technique using a manikin by

• International Standards Organisation

IEC 60651. Sound level meters by

• International Electrotechnical Commission

CE IEC 268-7 by

• International Electrotechnical Commission

ISO R226. Normal equal-loudness contours for pure tones and normal threshold of hearing under free field listening conditions by

• International Organization for Standardization

ISO 389-8. Acoustics - reference zero for the calibration of audiometric equipments. Part 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones by

• International Standards Organisation

ISO TR 4869-3. Acoustics - hearing protectors. Part 3: Simplified method for the measurement of insertion loss of ear-muff type protectors for quality inspection purposes by

• International Standards Organisation

IEEE Std 269- 2002. IEEE standard methods for measuring transmission performance of analog and digital telephone sets, handsets, and headsets by

• Institute of Electrical and Electronics Engineers

ITU-T.P800. Series P: Telephone transmission quality. Methods for objective and subjective assessment of quality.

ITU-T. P.810. Telephone transmission quality methods for objective and subjective assessment of quality. Modulated noise reference unit (MNRU) by

• International Telecommunication Union

P. 82. ITU-T. Telephone transmission quality subjective opinion tests. Method for evaluation of service from the standpoint of speech transmission quality. by

• International Telecommunication Union

ITU-T. P.830. Telephone transmission quality. Methods for objective and subjective assessment of quality. Subjective performance assessment of telephone-band and wideband digital codecs

ITU-T. P. 310. Series P. Telephone transmission quality, telephone installations, local line networks. Subscribers' lines and sets. Transmission characteristics for telephone band (300-3400 hz) digital telephones by

• International Telecommunication Union

P.10. (03/93) Telephone transmission quality vocabulary and effects of transmission parameters on customer opinion of transmission quality and their assessment. Vocabulary of terms on telephone transmission quality and telephone sets by

• International Telecommunication Union

ITU-T. P. 58 (03/93). Telephone transmission quality objective measuring apparatus. Head and torso simulator for telephonometry by

• International Telecommunication Union

P.58 (08/96). Series P: Telephone transmission quality objective measuring apparatus. Head and torso simulator for telephonometry by

• International Telecommunication Union

ITU-T. P. 56. Telephone transmission quality objective measuring apparatus. Objective measurement of active speech level

ITU-T. P. 57 (07/2002). Series P: telephone transmission quality, telephone installations, local line networks. Objective measuring apparatus. Artificial ears. by

• International Telecommunication Union

ITU-T. P. 38. Telephone transmission quality subscribers' lines and sets. Transmission characteristics of operator telephone systems (OTS) by

• International Telecommunication Union

P. 360. Series P: telephone transmission quality, telephone installations, local line networks. Subscribers' lines and sets. Efficiency of devices for preventing acoustic pressure by telephone receivers by

• International Telecommunication Union

ITU-T. p. 65 (03.93). Telephone transmission quality objective electro-acoustical measurements. Objective instrumentation for the determination of loudness ratings by

• International Telecommunication Union