IEEE 661-1979 - IEEE Standard Method for Determining Objective Loudness Ratings of Telephone Connections
Standard Details
To describe a practical and reproducible method of determining the loudness ratings of telephone connections. Loudness ratings may be measured directly using appropriate test instruments and facilities, as specified in this standard, or may be computed using the amplitude-frequency characteristic of the connection measured in accordance with IEEE Std 269-1971. .
Sponsor Committee
Board Approval
Additional Resources Details
Working Group Details
Working Group
Working Group Chair
Sponsor Committee
IEEE Program Manager
Existing Standards