The presence of babble noise is one of the most difficult environments to sustain speech system performance. This study focuses on acoustic and perceptual analyses of babble. The acoustic variability of babble is analyzed as a function of the number of speakers in babble. The concept of acoustic volume is proposed and it is shown that the acoustic volume reduces as the number of speakers in bab...

background and aim: digits are suitable materials for hearing assessment of wide range of patients including children and adults with various language abilities. single monosyllabic 1-10 digits in triplet formant have been used for measuring speech recognition threshold in signal-to-noise ratio. the purpose of this study was to determine signal-to-noise ratio (snr) needed for 50 percent correct...

This study tested the use of binaural cues in adult dyslexic listeners during speech-in-noise comprehension. Participants listened to words presented in three different noise-types (Babble-, Fluctuatingand Stationary-noise) in three different listening configurations: dichotic, monaural and binaural. In controls, we obtained an important informational masking in the monaural configuration mostl...

Purpose: The purpose of the study was to evaluate the effect of different gradations of noise reduction (NR) algorithm in hearing aids, through acoustical and perceptual measures. Methods: The output of the hearing aid with NR at three gradations (minimum, medium and maximum) and without NR, at 0 dB signal to noise ratio (SNR) across three types of noise (cafeteria, speech babble, and traffic n...

This study investigates masking effects occurring during speech comprehension in the presence of concurrent speech signals. We examined the differential effects of 4to 8-talker babble (natural speech) or babble-like noise (reversed speech) on word identification. We measured phoneme identification rates. Results showed that different types of linguistic information can interfere with speech rec...

The intelligibility of speech in noisy environments depends not only on the functionality of listeners' peripheral auditory systems, but also on cognitive factors such as their language learning experience. Previous studies have shown, for example, that normal-hearing listeners attending to a non-native language have more difficulty identifying speech targets in noisy conditions than do native ...

The present investigation examined speech perception in noise of adults with and without multiple sclerosis (MS). Institute of Electrical and Electronic Engineers (IEEE) sentences were presented at a constant level of 65 dBA L(eq) (equivalent continuous noise level [4 dB exchange rate]) from a loudspeaker located at 0-degree horizontal azimuth and 1.2 m from the study participant. Uncorrelated ...

PURPOSE This study aimed to explore if dysphonic voice quality affects children's performance on a language comprehension test, the Test for Reception of Grammar-2 (TROG-2), performed in simultaneous background noise (non-semantic babble). A further aim was to investigate the role of Working Memory Capacity (WMC) and Executive Functioning (EF) in coping with the voice against a background of ba...

Comfort noise insertion during speech pause has been applied to Voice-over-IP and wireless networks for increasing bandwidth efficiency. We present two classified comfort noise generation (CCNG) schemes using Gaussian Mixture classifiers (GMM-C). Our first scheme employs a classified prototype background noise codebook with the prototype noise waveform chosen using a GMM-C. The second scheme ut...

Normal-hearing older adults often experience increased difficulties understanding speech in noise. In addition, they benefit less from amplitude fluctuations in the masker. These difficulties may be attributed to an age-related auditory temporal processing deficit. However, a decline in cognitive processing likely also plays an important role. This study examined the relative contribution of de...