Abstract
Psychoacoustic parameter of sound known as loudness is a major quality factor for assessing the perceptual quality of service of speech signals transmitted through telecommunication networks. The Zwicker and Fastl loudness model is a preferred loudness model and in this work has been programmed to obtain both loudness and loudness level of speeches transmitted over wireless. Here,the best maximum instantaneous loudness of the transmitted speeches is 42.55% of that of the original speech. While the best maximum instantaneous loudness level of the transmitted speeches is 87.06% of that of the original speech. These showed an intuitive and innovative representation of the degradation suffered by the transmitted speeches with respect to the original speech.
Highlights
Psychoacoustic as the study of the perception of sound by the human auditory system is a field in which acoustic stimuli of sounds generally reaching the human ear is statistically related with the hearing sensations produced in the auditory system
In attempt to evaluate end-to-end quality of service of speech transmitted through wireless mobile networks, the key psychoacoustic parameter of speech mostly affected by distortions and attenuations caused by network equipment and transmission conditions is loudness
Due to the complexity of the computations involved in the stages of obtaining the loudness of time-varying sounds, the developed loudness models have almost in every case come with computer software programmes to help in reducing computation stress, time and resources. [8] implemented the algorithms for the Zwicker and Fastl model and the Moore and Glasberg model using Matlab for a couple of pure tones, bandpass noise and industrial noise stimuli
Summary
Psychoacoustic as the study of the perception of sound by the human auditory system is a field in which acoustic stimuli of sounds generally reaching the human ear is statistically related with the hearing sensations produced in the auditory system. It relates the physical quantities of sound with the perception of sound. Of all psychoacoustic parameters of sound, [2] claimed that loudness is the primary perceptual correlate of the level of quality of a sound. This is because its value and variation depend upon such physical factors of sound as the frequency, bandwidth, duration, spectral complexity of sound, the presence of other sound, and so on
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