ISO MPEG 1/2 and Dolby AC-3 are widely used in the network, wireless, multimedia system and video industry. This dissertation studies the design of audio standards: MPEG-1/2 and AC-3. The perceptual audio coder like MPEG-1/2 and AC-3 can be analyzed through filterbank, psychoacoustic model, stereo matrix, bit allocation/ quantization, and packing block. This dissertation considers the design fo...

background and aim: tinnitus is a distressing symptom for which few treatments exist. low-frequency repetitive transcranial magnetic stimulation (rtms) of the temporal cortex has been proposed as a treatment for chronic tinnitus. this study determined relationship between psychoacoustic parameters such as loudness and frequency of tinnitus and outcome with rtms treatment. methods: twenty six pa...

An integrated method, which combines Electronic Speckle Pattern Interferometry, impulse response measurements, finite element method simulations, and psychoacoustic tests, is proposed to evaluate the vibroacoustic behavior of a carbon fiber bouzouki. Three instruments are manufactured, one qualified via interferometric experimental measurements with reference traditional wooden bouzouki, was ev...

In addition to traditional, purely physical noise measurements, psychoacoustic metrics are used more and more for the assessment of noise problems. Within the psychoacoustic procedures, some already have become "classic" like e.g. Zwicker's loudness for stationary sounds as described in DIN 45 631 and ISO 532 B or algorithms for sharpness, fluctuation strength, roughness, and so forth. Recently...

This report reviews research from the 1930s to the present that has extended our understanding by investigating the characteristics of tinnitus that can be studied using psychoacoustic techniques. Studies of tinnitus masking and residual inhibition began in the 1970s, leading to the therapeutic use of tinnitus masking and a consequent increase in research devoted to tinnitus measurement. In 198...

Prosodic attributes of speech, such as intonation, influence our ability to recognize, comprehend, and produce affect, as well as semantic and pragmatic meaning, in vocal utterances. The present study examines associations between auditory perceptual abilities and the perception of prosody, both pragmatic and affective. This association has not been previously examined. Ninety-seven participant...

Gaussian mixture model based vector quantization (GMM-VQ) is a powerful technique for structured vector quantization. This thesis describes the implementation and evaluation of a perceptual audio coder using GMM-VQ. It is combined with a perceptual transform using psychoacoustic preand post-filtering. The coder was tested for low rate mono audio coding (64 kbps) and the results were compared to...

UNLABELLED Studies have reported compatibility between hearing and electrophysiological thresholds in the auditory brainstem response (ABR) with tone burst stimuli. AIMS to verify waves I, III, V and their latency times for tone bursts at 500, 1000, 2000 and 4000 Hz and at 80 dB HL, and to compare tone burst electrophysiological thresholds with those obtained from audiological and psychoacous...