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Estimation of Reverberation Time in Solids
, 2022 Ultrasonic testing is one of many techniques used to evaluate materials and detect defects of media. Indeed, classical ultrasonic testing methods depend on wave propagation along direct path between emitter and receiver, which provides local information. Other techniques provide global information using coda. In this work, a method is proposed based on
Farhat, Youssef +5 more
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A method for extending reverberation time of Dattorro's reverberator
2015 12th International Conference on Fuzzy Systems and Knowledge Discovery (FSKD), 2015Based on the introduction of the digital reverberation algorithm, we use the integrated impulse response method, and the method of compressing and extending the reverberation model impulse response to solve two existing problems of the Dattorro's plate reverberator in the practical application.
Chen-lu Feng +4 more
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Blind estimation of reverberation time
The Journal of the Acoustical Society of America, 2003The reverberation time (RT) is an important parameter for characterizing the quality of an auditory space. Sounds in reverberant environments are subject to coloration. This affects speech intelligibility and sound localization. Many state-of-the-art audio signal processing algorithms, for example in hearing-aids and telephony, are expected to have the
Rama, Ratnam +5 more
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Time-reversed reverberation focusing in a waveguide
The Journal of the Acoustical Society of America, 2001Time reversal mirrors have been demonstrated to focus acoustic energy in the ocean at ranges of tens of kilometers from a probe source [W. A. Kuperman et al., J. Acoust. Soc. Am. 103, 25–40 (1998)]. Time reversal has also been exploited to focus acoustic energy at discrete scatters of unknown location using the eigenvectors of the time reversal ...
J F, Lingevitch +2 more
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The Reverberation Time Bridge—An Instrumental Method for Measuring Reverberation Time
The Journal of the Acoustical Society of America, 1930The analogy between the decay of the electrical energy in a capacitor shunted by a resistor and the decay of sound energy in a room with sound absorbing walls is the basis of this bridge. The sound pressure is converted into a corresponding electrical voltage by a microphone and amplifier.
Harry F. Olson, Barton Kreuzer
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Blind reverberation time estimation by intrinsic modeling of reverberant speech
2013 IEEE International Conference on Acoustics, Speech and Signal Processing, 2013The reverberation time (RT) is a very important measure that quantifies the acoustic properties of a room and provides information about the quality and intelligibility of speech recorded in that room. Moreover, information about the RT can be used to improve the performance of automatic speech recognition systems and speech dereverberation algorithms.
Ronen Talmon, Emanuël A. P. Habets
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Predicting reverberation times in a simulated classroom
The Journal of the Acoustical Society of America, 2000By varying the sound-absorption treatments in a simulated classroom, experimental results were compared with analytical and computer predictions of reverberation time. Analytical predictions were made with different absorption exponents, which are the result of different weighting procedures involving room surface areas and the sound-absorption ...
Bistafa, S. R., Bradley, J. S.
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Reverberation Time in Vehicular Cabins
2018This paper research is focused on the reverberation time produced inside cabins where the influence of windows on wide-band signals is substantial. This kind of scenarios are important for the new generations of wireless communications since high-density scenarios with high-traffic demand are one of the keys environments.
Ana Ma Gonzalez-Plaza +3 more
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Reverberance of an existing hall in relation to subsequent reverberation time and SPL
The Journal of the Acoustical Society of America, 1998Psychological tests in relation to reverberance of sound fields were conducted in an existing hall which is a medium-sized multipurpose hall with 400 seats. Music and speech as sound sources were radiated from an omnidirectional dodecahedron loudspeaker on the stage.
Shigeo Hase +4 more
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Optimum Reverberation Time for Auditoriums
The Journal of the Acoustical Society of America, 1930Up to the present, the acoustics of auditoriums has rested on a purely empirical basis. A more satisfactory situation would be reached if we knew a physical quantity which had some definite value for all rooms, regardless of size, which are considered acoustically good.
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