Results 41 to 50 of about 46,475 (334)

A construction method of reverberation suppression filter using an end-to-end network.

open access: yesPLoS ONE, 2023
Reverberation is the primary background interference of active sonar systems in shallow water environments, affecting target position detection accuracy.
Zhen Wang, Hao Zhang, Xiao Chen, Yuan An
doaj   +1 more source

Predicting theater chair absorption from reverberation chamber measurements - comment [PDF]

open access: yes, 1993
The relationship between the measured acoustic absorption coefficient of an array of theater chairs and the ratio of the perimeter length to plan area of the array is considered.
Davies, WJ, Lam, YW, Orlowski, RJ
core   +2 more sources

Chinese Syllable and Phoneme Identification in Noise and Reverberation

open access: yesArchives of Acoustics, 2014
Chinese is a tonal language, which differentiates it from non-tonal languages in the Western countries. A Chinese character consists of an initial, a final, and a tone. In the present study, the effects of noise and reverberation on the Chinese syllable,
Jianxin PENG
doaj   +1 more source

Reverberation Time in “Dead” Rooms [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1930
An analysis based on the assumption that image sources may replace the walls of a room in calculating the rate of decay of sound intensity after the sound source is cut off gives the more general reverberation time equation T = .05V−S loga(1−aa), where T is reverberation time, V the volume of the room, S the surface of the room, and aa the average ...
openaire   +2 more sources

Reverberation time measurements in non-diffuse acoustic field by the modal reverberation time

open access: yesApplied Acoustics, 2016
Abstract The increasing presence of low frequency sources and the lack of acoustic standard measurement procedures make the extension of reverberation time measurements to frequencies below 100 Hz necessary. In typical ordinary rooms with volumes between 30 m 3 and 200 m 3 the sound field is non-diffuse at such low frequencies, entailing ...
Prato, A.   +2 more
openaire   +5 more sources

Power series for the reverberation time [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1979
A power series is derived for 1/T, the reciprocal of the geometrical-acoustics reverberation time of an enclosure. The first term is Sabine's expression and the second term provides a correction to the Sabine value in many practical cases where his value is a good, but not quite good enough, estimate of T. The Eyring formula and other expressions which
openaire   +2 more sources

Reverberation time, absorption, and impedance [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1977
A rigorous theoretical model is derived and used to calculate reverberation time of a room in terms of impedance of absorption materials on the wall and geometrical factors associated with such materials and the room. In addition, the reverberation time also depends upon the initial state of the pressure field before decay begins as well as on the ...
openaire   +2 more sources

The influence of the nature of sound reflection from enclosures on the reverberation processes in the rooms [PDF]

open access: yesMATEC Web of Conferences, 2019
The article considers the questions of assessment of reverberation processes in rooms with various character of a sound reflection from the enclosures.
Golovko Aleksander   +2 more
doaj   +1 more source

Revealing structure and evolution within the corona of the Seyfert galaxy I Zw 1 [PDF]

open access: yes, 2017
X-ray spectral timing analysis is presented of XMM-Newton observations of the narrow line Seyfert 1 galaxy I Zwicky 1 (I Zw 1) taken in 2015 January.
Brandt, W. N.   +5 more
core   +2 more sources

The Effect of Reverberation Time and Signal-to-Noise Ratio On Word Recognition Scores By Adults and Children in Classrooms

open access: yesMegaron, 2019
This paper seeks to assess the effect of reverberation time, distribution of reverberation time over the frequency range and signal-to-noise ratio on speech intellibility by adults and children in classrooms by the use of phonetically balanced ...
Konca Saher, Baki Karaböce
doaj   +1 more source

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