Practical Procedures for Subjective Testing

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This Handbook describes practical procedures to be used to quantify the perceived audio quality of end-to-end speech and audio communication systems.



Test purpose

The following sections provide an understanding of the process followed by ITU during a typical codec standardization activity. There are other approaches to conducting research, development, and implementation of end-to-end speech communication systems, but they are typically a variation of the ITU-T approach and can be extracted from the following descriptions of test purposes.


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