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In this study, event-related potentials (ERPs) collected from normally hearing subjects and elicited by a multi-feature paradigm were investigated, and mismatch negativity (MMN) was detected. Standard stimuli and five types of deviant stimuli were presented in a specified sequence, while EEG data were recorded digitally at a 1024 sec–1 sampling rate. Two wavelet analyses were compared with a traditional...
In recent years, methods for speech processing in cochlear implant systems have been proposed in which frequency modulation is extracted as well as amplitude modulation in different bands. In this paper besides considering one of the above strategies, methods for improving sample reduction and computational efficiency are also presented. In this case adaptive method according to processing parameters...
Retinal image is one of the robust and accurate biometrics. A new biometric identification system base on Fourier transform and that special partitioning presented in this article. In this method, at first, optical disc is localized using template matching technique and use it for rotate the retinal image to reference position. Fourier transform coefficient and angular partitioning of these coefficients...
Defects on the Pipeline surface such as cracks cause main problems for governments, specifically when the pipeline is covered under the ground. Manual examination for surface defects in the pipeline has several disadvantages, including varying standards, and high cost. In this paper, a combination of two algorithms based on mathematical morphology and curvature evaluation for segmentation of defects...
Tinnitus is defined as "unwanted auditory perception of internal origin, usually localized, and rarely heard by others. Tinnitus is a sensibly experienced ringing sensation in the auditory system, which occurs without the presence of an actual auditory stimulation". Nowadays many researchers focused on finding a method for treatment of tinnitus. Although they report many different treatments,...
This paper presents an approach to personal verification and identification using hand geometry. Having extracted, fifteen features of users' right hand, Fingers' width, Area and circumference, are classified with two different pattern recognition systems Euclidean and Absolute Distance. The algorithm has been tested on 500 pictures of 50 users. Result shows 99.7056 identification rate and 0.3198%...
Infant's cry is a multimodal behavior that contains a lot of information about the infant, particularly, information about the health of the infant. In this paper a new feature in infant cry analysis is presented for recognition two groups: infants with hearing disorder and normal infants, by Mel frequency multi-band entropy cepstrum extraction from infant's cry. Signal processing stage is included...
Infant cry is a multimodal behavior that contains a lot of information about the infant, particularly, information about the health of the infant. In this paper a new feature in infant cry analysis is presented for recognition two groups: infants with pain and normal infants, by Mel frequency multi-band entropy extraction from infant's cry. In signal processing stage we made pre-processing included...
Cochlear implant systems are based on stimulation of the auditory nerve fibers by electrical current with implanted electrodes. In the clinical tests, based on stimulation by electrical current and recording the evoked compound action potential (CCAP) same as neural response telemetry (NRT), electrical behavior and population distribution of the nerve fibers can be evaluated. Stimulation parameter...
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