On the quality of plate reverberation

Arcas, Kevin; Chaigne, Antoine

doi:10.1016/j.apacoust.2009.07.013

Cited by 11 publications

(5 citation statements)

References 20 publications

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“…Bilbao [38] and Arcas and Chaigne [39] have explored the physics of plates and have developed finite difference schemes for simulating their motion. However, there are settings in which these schemes are impractical, and for real-time implementation as a (linear, time-invariant) reverberation effect, an efficient hybrid reverberator is useful.…”

Section: Hybrid Reverberation Methodsmentioning

confidence: 99%

Recent Advances in Real-Time Musical Effects, Synthesis, and Virtual Analog Models

Pakarinen

Välimäki

Fontana

et al. 2011

EURASIP J. Adv. Signal Process.

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Section: Hybrid Reverberation Methodsmentioning

confidence: 99%

Recent Advances in Real-Time Musical Effects, Synthesis, and Virtual Analog Models

Pakarinen

Välimäki

Fontana

et al. 2011

EURASIP J. Adv. Signal Process.

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“…Since the damping is directly related to the reverberation time [25], this is a meaningful quantity for the system performance in the present case. The reverberation time is mostly measured to determine room acoustics [26], but can also be measured for any solid plates, for instance in musical equipment [27].…”

Section: Introductionmentioning

confidence: 99%

Damping of post-impact vibrations

et al. 2019

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Impacts of solid bodies on rigid plates produce loud noise and strong vibrations. During this impact, flexural waves travel circularly outwards from the point of impact. These waves are used to determine the properties of the impacting body. For accurate location and momentum measurements, it is necessary that the set of flexural waves pass acceleration sensors just once without being disturbed by reflections. Different plate designs are tested with the aim to evaluate the shape, which offers the best damping properties against strong single impact. The investigations showed that the damping properties of the plates are significantly better with a star-shaped design, which is equipped with a damping layer. The novelty presented here is that the damping properties are significantly increased using a star-shaped plate with specially power law formed and damped edges. The work offers a solution to get significant better damping properties and a better signal for impact investigations. The results demonstrate that it is a promising approach for an impact detection system, which could be equally applicable to acoustic damping applications.

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“…Human speech contains wide-bandwidth bursts, such as oral stops and plosives [19], and when a panel is excited by a signal containing such impulsive sounds, reverberation can be observed at the frequencies where the panel has modal resonances, leading to reverberant audio artifacts. This can be combated to some extent by using more heavily damped materials [20]. Gelfand and Silman have shown that consonant intelligibility is reduced under reverberant conditions [21], and the resonances in flat-panel loudspeakers were shown to degrade the quality of reproduced speech [22].…”

Section: Introductionmentioning

confidence: 99%

Audio Capture Using Structural Sensors on Vibrating Panel Surfaces

DiPassio¹,

Heilemann²,

Bocko³

2022

J. Audio Eng. Soc.

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The microphones and loudspeakers of modern compact electronic devices such as smartphones and tablets typically require case penetrations that leave the device vulnerable to environmental damage. To address this, the authors propose a surface-based audio interface that employs force actuators for reproduction and structural vibration sensors to record the vibrations of the display panel induced by incident acoustic waves. This paper reports experimental results showing that recorded speech signals are of sufficient quality to enable high-reliability automatic speech recognition despite degradation by the panel's resonant properties. The authors report the results of experiments in which acoustic waves containing speech were directed to several panels, and the subsequent vibrations of the panels' surfaces were recorded using structural sensors. The recording quality was characterized by measuring the speech transmission index, and the recordings were transcribed to text using an automatic speech recognition system from which the resulting word error rate was determined. Experiments showed that the word error rate (10%-13%) achieved for the audio signals recorded by the method described in this paper was comparable to that for audio captured by a high-quality studio microphone (10%). The authors also demonstrated a crosstalk cancellation method that enables the system to simultaneously record and play audio signals.

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On the quality of plate reverberation

Cited by 11 publications

References 20 publications

Recent Advances in Real-Time Musical Effects, Synthesis, and Virtual Analog Models

Recent Advances in Real-Time Musical Effects, Synthesis, and Virtual Analog Models

Damping of post-impact vibrations

Audio Capture Using Structural Sensors on Vibrating Panel Surfaces

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