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The Optimal Time-Frequency Smearing and Amplitude Compression in Measuring the Quality of Audio Devices

Masking plays an important role in the measurement of the quality of audio devices. Masking is the result of smearing in the time-frequency domain and compression in the amplitude domain. This paper determines the optimal psychoacoustic representation by matching the time-frequency smearing and amplitude compression to databases that contain judgments on the quality of audio devices. The optimal time-frequency smearing that is found is in line with psychoacoustic data for music codecs but in contradiction to psychoacoustic data for speech codecs.

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