Results 261 to 270 of about 128,951 (314)

Toward noise-tolerant acoustic models

7th European Conference on Speech Communication and Technology (Eurospeech 2001), 2001
Acoustic models relying on hidden Markov models (HMMs) are heavily noise-sensitive: recognition performance drops whenever a significant difference in acoustic conditions holds between training and test environments. The relevance of developing acoustic models that are intrinsically robust has to be stressed.
TRENTIN E., GORI M.
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Acoustic noise‐optimized verse pulses

Magnetic Resonance in Medicine, 2010
AbstractVariable‐rate selective excitation RF pulses modulate the slice selection gradients during RF transmission, especially to reduce the total RF power. Amplitude‐modulated slice selection gradients can lead to increased gradient noise, in particular in high‐field MRI where variable‐rate selective excitation techniques are often used. In this work,
Schmitter, Sebastian, Bock, Michael
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An Acoustical Trigger for Impact Noise Studies

American Industrial Hygiene Association Journal, 1975
In making oscilloscopic studies of impact noise there is often a problem of coordinating the oscilloscope with the noise event. This paper describes a simple noise trigger that has been used successfully in a number of studies.
S W, Horstman, S L, Walker
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Acoustic Fundamentals and Noise

SAE Technical Paper Series, 1972
<div class="htmlview paragraph">Acoustic noise has been described as “sound without value.” This paper on acoustic noise is a study of what is called sound, treating of how it is generated, how it is propagated, absorbed, and measured. These specifics are discussed, along with some simple examples of how sound is related to the environment in ...
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Enhancement of speech corrupted by acoustic noise

ICASSP '79. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
This paper describes a method for enhancing speech corrupted by broadband noise. The method is based on the spectral noise subtraction method. The original method entails subtracting an estimate of the noise power spectrum from the speech power spectrum, setting negative differences to zero, recombining the new power spectrum with the original phase ...
Michael G. Berouti, Richard M. Schwartz, John Makhoul   +2 more
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Predictive Control of IM Drive Acoustic Noise

IEEE Transactions on Industrial Electronics, 2020
Acoustic behavior of electric drives is an important factor for their application in areas where humans expect certain comfort, such as in electric vehicles. The main problem addressed in this article is high tonality of noise emitted by conventional pulsewidth modulation (PWM) controlled drives.
Michal Kroneisl, Václav Smídl, Zdenek Peroutka, Martin Janda   +3 more
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Cardiorespiratory Responses to Acoustic Noise in Belugas

2016
To date, most research on the adverse effects of anthropogenic noise on marine mammals has focused on auditory and behavioral responses. Other responses have received little attention and are often ignored. In this study, the effect of acoustic noise on heart rate was examined in captive belugas.
Oleg I, Lyamin, Svetlana M, Korneva, Viatcheslav V, Rozhnov, Lev M, Mukhametov   +3 more
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Acoustic noise in MRI

2014
Purpose: Hearing loss, caused by noise, is one of the 10 most common diseases in the European Union. The acoustic noise in magnetic resonance (MR) is associated with activation and deactivation of the electrical current that induces vibrations in the...
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Urban Noise – A Need for Acoustic Planning

Environmental Monitoring and Assessment, 2001
The noise status of growing urban centres of the country are very much required to develop acoustic design and planning guidelines for various land use classification. An attempt in this direction has been made by measuring noise equivalent levels for cities like Delhi, Jamshedpur, Dehradun and Nagpur. The choice of Ldn (Day-Night noise level) which is
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Acoustic-reflex thresholds for noise stimuli

The Journal of the Acoustical Society of America, 1980
The effect of noise bandwidth on the acoustic-reflex threshold was studied in 12 normal-hearing adult subjects by independently varying the cutoff frequencies of low-pass (fL=100 Hz) and high-pass (fH=6000 Hz) computer-generated noises. Adjusting the cutoff frequency of the low-pass or high-pass activating stimuli over the 700–6000 Hz range resulted in
R H, Margolis, J R, Dubno, R H, Wilson
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