Title :
Estimation of perceptual entropy using noise masking criteria
Author :
Johnston, James D.
Author_Institution :
AT&T Bell Lab., Murray Hill, NJ, USA
Abstract :
The perceptual entropy of each short-term section of the audio stimuli is estimated as the number of bits required to encode the short-term spectrum of the signal to the resolution measured by this process provide an entropy estimate, for transparent coding, of 1.4 (mean) or 2.1 (peak) bits/sample for telephone speech (200-3200-Hz bandwidth sampled at 8 kHz). The entropy measures for audio signals of other bandwidths and sampling rates is also reported
Keywords :
encoding; hearing; information theory; speech analysis and processing; 200 to 3200 Hz; 8 kHz; audio signals; audio stimuli; bandwidth; ear; entropy estimate; information theory; noise masking; perceptual entropy; sampling rates; short-term spectrum; telephone speech; transparent coding; Acoustic noise; Bandwidth; Bit rate; Ear; Entropy; Frequency estimation; Noise measurement; Signal resolution; Speech coding; Telephony;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
DOI :
10.1109/ICASSP.1988.197157
