IEEE Std 661-1979 URL: https://knowledge.ivjn.us/th/works/ieee-std-661-1979.html IEEE Std 661-1979 是电气电子工程师学会的技术标准,题为“IEEE Standard Method for Determining Objective Loudness Ratings of Telephone Connections”;公开目录标为非现行(Inactive),保留(Reserved),著录年份为 1979 年。 **IEEE Std 661-1979**(IEEE Standard Method for Determining Objective Loudness Ratings of Telephone Connections)是[电气电子工程师学会](https://knowledge.ivjn.us/th/organizations/ieee.html)的技术标准。公开目录将其标为非现行(Inactive),保留(Reserved),著录年份为 1979 年,主题领域包括 Communication, Networking and Broadcast Technologies[^s1]。参见[IEEE 标准](https://knowledge.ivjn.us/th/concepts/ieee-standards.html)。 Updated: 2026-11-01 Tags: - IEEE standard https://knowledge.ivjn.us/th/tags/ieee-standard.html Relations: - Published by: 电气电子工程师学会 https://knowledge.ivjn.us/th/organizations/ieee.html - About: IEEE 标准 https://knowledge.ivjn.us/th/concepts/ieee-standards.html Sources: - IEEE Std 661-1979 — IEEE Xplore 题录 https://ieeexplore.ieee.org/servlet/opac?punumber=4349 standard_number=661-1979; status=Inactive; modifier=Reserved - IEEE Xplore All Standards(KBART) https://ieeexplore.ieee.org/otherfiles/IEEEXplore_Global_All-Standards.txt