We disrupted periodicity cues by temporally jittering the speech signal to explore how such distortion might affect word identification. Jittering distorts the fine structure of the speech signal with negligible alteration of either its long-term spectral or amplitude envelope characteristics. In Experiment 1, word identification in noise was significantly reduced in young, normal-hearing adult...

We propose to use minimum mean squared error (MMSE) estimates to enhance the signals that are separated by nonnegative matrix factorization (NMF). In single channel source separation (SCSS), NMF is used to train a set of basis vectors for each source from their training spectrograms. Then NMF is used to decompose the mixed signal spectrogram as a weighted linear combination of the trained basis...

This paper proposes novel feedforward architecture of a second-order ΔΣAD modulator with single DACfeedback topology. ΔΣAD modulator realizes high resolution by oversampling and noise shaping technique. However, its SNDR (Signal to Noise and Distortion Ratio) is limited by the dynamic range of the input signal and non-idealities of building blocks, particularly by the harmonic distortion in amp...

Pure-tone octave masking was investigated in 14 listeners with sensorineural hearing loss to examine the hypothesis that the sensorineural ear introduces abnormal harmonic distortion. Thresholds for a test signal at f2, masked by a masking signal at fl, (where fz = 2fl ) were obtained as a function of the level of the fl masker for four different ft frequencies (250, 500, 1000, and 2000 Hz) and...

Electrocardiogram (ECG) is a valuable technique that has been in use for over a century. The analysis of fetal ECG signal has always been an interesting topic in the field of signal processing. The presence of noises in the ECG signal causes distortion in the signal morphology. While analyzing the fetal ECG this distortion of the signal is much more severe as the fetal ECG is much weaker than t...

Nonlinearities inherent in electromechanical and electroacoustical transducers produce signal distortion and limit the maximal amplitude of the output signal. Assessing the large signal performance has been a subject of acoustical research for many years providing nonlinear models and new methods for the measurement of the large signal parameters. The identified model allows prediction and simu...

Contralateral stimulation of the auditory system causes changes in levels of otoacoustic emissions. The main objective of this study was to determine the changes in the level of distortion product otoacoustic emissions for contralaterally presented unmodulated broad-band noise, or amplitude modulated broad-band noise. Two types of modulating signal were used in the investigations (sine or recta...

The main goal of this paper is to characterize the low-frequency part of ADC transfer function by dual tone testing from intermodulation components that are independent of test signal harmonic distortion. The theoretical analyses of incoherently sampled signals in the frequency domain and of intermodulation distortion are provided and the theory is verified by experimental results.

The synthetic aperture radar(SAR) is an equipment that can acquire images in all weathers day and night based on radar signals. on-board processor of satellite SAR generates transmission signal by digital processing, converts it into analog transmits to antenna. Until the generated output, passes cables devices. At this time, these hardware distort makes performance worse. To improve performanc...

We propose an extension to the so-called PD detector. The PD detector jointly monitors received power and correlation profile distortion to detect the presence of GNSS carry-off-type spoofing, jamming, or multipath. We show that classification performance can be significantly improved by replacing the PD detector’s symmetric-difference-based distortion measurement with one based on the post-fit...