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现行 ETSI EG 201 377-2
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Speech Processing, Transmission and Quality Aspects (STQ); Specification and measurement of speech transmission quality; Part 2: Mouth-to-ear speech transmission quality including terminals 语音处理、传输和质量方面(STQ);语音传输质量的规范和测量;第2部分:包括终端在内的口耳语音传输质量
发布日期: 2005-11-01
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