Threshold of Audibility of Transient Intermodulation Distortion
The audible threshold of TIM was determined for six most sensitive subjects of the previously reported test series of 68 listeners. Improved equipment, carefully controlled listening environment, a digital TIM generator, and five stereophonic music samples were used. The results show that in certain passages of music, 0.003% of distortion is clearly audible. Low distortion values were perceived only as changes in the sound character, and not as distortion.
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