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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 15485-1995 |
Acoustics--Methods for the calculation of the articulation index of speech 声学 语言清晰度指数的计算方法 |
China National Standards Acoustics Speech articulation |
 English PDF |
| GB/T 15508-1995 |
Acoustics--Speech articulation testing method 声学 语言清晰度测试方法 |
China National Standards Acoustics Speech articulation |
English PDF |
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