An Efficient Audio Coding Scheme for Quantitative and Qualitative Large Scale Acoustic Monitoring Using the Sensor Grid Approach.
An Efficient Audio Coding Scheme for Quantitative and Qualitative Large Scale Acoustic Monitoring Using the Sensor Grid Approach.
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DOI：
10.3390/s17122758
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发表时间：
2017-11-29
期刊：
影响因子：
--
通讯作者：
Lavandier C
中科院分区：
文献类型：
--
作者：
Gontier F;Lagrange M;Aumond P;Can A;Lavandier C
世界范围内城市地区的扩张和人口的增长引起了社会和环境方面的关注。为了更好地解决这些问题，监测城市以及农村或荒野地区的声环境是一件重要的事情。基于低成本硬件声传感器的最新发展，我们在本文中提出考虑传感器网格方法来解决这个问题。在这种方法中，关键问题是从传感器传输到处理和存档服务器的数据的性质。为此，我们提出了一种基于三倍频频带频谱表示的高效音频编码方案，该方案允许：(1)估计标准声学指标；(2)以最先进的性能率识别声事件。前者可用于提供有关声环境的定量信息，而后者可用于收集定性信息并利用例如给定声源的出现建立感知动机指标。编码方案还被证明可以传输频谱编码的数据，这些数据使用最先进的技术还原到时域，是不可理解的，从而保护了公民的隐私。
The spreading of urban areas and the growth of human population worldwide raise societal and environmental concerns. To better address these concerns, the monitoring of the acoustic environment in urban as well as rural or wilderness areas is an important matter. Building on the recent development of low cost hardware acoustic sensors, we propose in this paper to consider a sensor grid approach to tackle this issue. In this kind of approach, the crucial question is the nature of the data that are transmitted from the sensors to the processing and archival servers. To this end, we propose an efficient audio coding scheme based on third octave band spectral representation that allows: (1) the estimation of standard acoustic indicators; and (2) the recognition of acoustic events at state-of-the-art performance rate. The former is useful to provide quantitative information about the acoustic environment, while the latter is useful to gather qualitative information and build perceptually motivated indicators using for example the emergence of a given sound source. The coding scheme is also demonstrated to transmit spectrally encoded data that, reverted to the time domain using state-of-the-art techniques, are not intelligible, thus protecting the privacy of citizens.
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DOI：
10.1109/tassp.1984.1164317
发表时间：
1984-01-01
期刊：
IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING
影响因子：
--
作者：
GRIFFIN, DW;LIM, JS
通讯作者：
LIM, JS
影响因子：
2.4
作者：
Brocolini, Laurent;Lavandier, Catherine;Ribeiro, Carlos
通讯作者：
Ribeiro, Carlos
影响因子：
2.7
作者：
Alias, Francesc;Claudi Socoro, Joan
通讯作者：
Claudi Socoro, Joan
影响因子：
3.2
作者：
Boë, LJ
通讯作者：
Boë, LJ
DOI：
10.1109/tasl.2009.2017438
发表时间：
2009-08-01
影响因子：
--
作者：
Chu, Selina;Narayanan, Shrikanth;Kuo, C. -C. Jay
通讯作者：
Kuo, C. -C. Jay