ITU-T - International Telecommunication Union/ITU Telcommunication Sector
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ITU-T P.811-2019
Scope
The subjective test methodology described in this Recommendation1 provides means to evaluate the quality degradation introduced by the transmission over stereo telecommunication systems that provide users with a spatial experience. The methodology conditions test subjects to attend to various aspects of the auditory signal presented over headphones@ specifically@ signal quality and spatial localization@ in making their judgments of overall quality The methodology is intended for use with naive subjects and headphone presentation and allows for evaluating at least 18 test conditions in a single test. The methodology is well suited to evaluate the impact of a stereo coding stage on the spatial localization@ signal quality and overall quality of signals. The methodology is not intended for the evaluation@ or comparison@ of spatial rendering techniques. The evaluation has been carried out for clean speech signal
ITU-T P.811-2019 history
2019ITU-T P.811-2019 Subjective test methodology for evaluating Speech oriented stereo communication systems over headphones (Study Group 12)