Author: Irwin PollackPublisher:
ISBN:
Category :
Languages : it
Pages : 2
Book Description
Effect of noise and filtering on speech intelligibility at high levels
Author: Irwin PollackEffects of High Pass and Low Pass Filtering on the Intelligibility of Speech in Noise
Author: Irwin PollackThe Effects of Noise on Man
Author: Karl D. KryterPublisher: Elsevier
ISBN: 1483272621
Category : Psychology
Languages : en
Pages : 654
Book Description
The Effects of Noise on Man covers the techniques for the evaluation of environmental noise in terms of its effects on human. The book provides the fundamental definitions of sound, its measurement, and concepts of the basic functioning, and the attributes of the auditory system. The text also presents along with their experimental basis, procedures for estimating from physical measures of noise its effects on man's auditory system and speech communications. The last part of the book is devoted to man's nonauditory system responses and includes information about the effects of noise on work performance, sleep, feelings of pain, vision, and blood circulation.
Effects of Spectrum Sampling on Speech Intelligibility
Author: Anthony E. CastelnovoPublisher:
ISBN:
Category : Communications, Military
Languages : en
Pages : 32
Book Description
The Effects of Noise on Speech and Warning Signals
Author: Alice Harriet SuterPublisher:
ISBN:
Category : Auditory perception
Languages : en
Pages : 53
Book Description
To assess the effects of noise on speech communication it is necessary to examine certain characteristics of the speech signal. Speech level can be measured by a variety of methods, none of which has yet been standardized, and it should be kept in mind that vocal effort increases with background noise level and with different types of activity. Noise and filtering commonly degrade the speech signal, especially as it is transmitted through communications systems. Intelligibility is also adversely affected by distance, reverberation, and monaural listening. Communication systems currently in use may cause strain and delays on the part of the listener, but there are many possibilities for improvement. Individuals who need to communicate in noise may be subject to voice disorders. Shouted speech becomes progressively less intelligible at high voice levels, but improvements can be realized when talkers use 'clear speech.' Tolerable listening levels are lower for negative than for positive S/Ns, and comfortable listening levels should be at a S/N of at least 5 dB, and preferably above 10 dB. Popular methods to predict speech intelligibility in noise include the Articulation Index, Speech Interference Level, Speech Transmission Index, and the sound level meter's A-weighting network. This report describes these methods, discussing certain advantages and disadvantages of each, and shows their interrelations.
Differential Effects of Signal and Noise Filtering on Speech Intelligibility in Sensorineural Hypacusis
Author: Steven Herman ViehwegPublisher:
ISBN:
Category : Deafness
Languages : en
Pages :
Book Description
Effects of the Attenuation of Selected Harmonics on the Intelligibility of Speech
Author: James Wesley IrwinPublisher:
ISBN:
Category : Speech
Languages : en
Pages : 130
Book Description
The Measurement and Prediction of the Effect of Low-pass and High-pass Filtering Upon the Intelligibility of Speech in White Noise
Author: David G. MlinerPublisher:
ISBN:
Category : Sound
Languages : en
Pages : 146
Book Description
Effects of Noise Reduction on Speech Intelligibility
Author: Gaston HilkhuysenPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Speech is often perceived in the presence of other sounds. At times the interfering sounds can reach such high levels that the speech becomes unintelligible. Speech enhancement methods attempt to reduce the audibility of noisy sounds, but little is known about how their influence on intelligibility. This thesis explores the effects of speech enhancement, also known as noise suppression algorithms, on speech intelligibility. After a short introduction to speech enhancement and intelligibility, three studies consider the effects from an empirical perspective. It is shown that noise suppression tends to reduce intelligibility and that its effect is mostly constant across a broad range of noise levels. When experts were asked to apply a commercial noise suppressor to optimise intelligibility, they proposed settings that degraded intelligibility. Laypeople successfully identified an increase in intelligibility resulting from speech enhancement. Three subsequent studies attempt to identify the signal properties responsible for the intelligibility effects and generated by speech enhancement.Physical metrics based on various signal properties were used to estimate the intelligibility of the speech-enhanced noisy signal. Most metrics provided unreliable or biased estimates of absolute intelligibility. Some could nevertheless be used to adjust speech enhancers such that intelligibility is optimal.
Author: Irwin Pollack