DEMAND: a collection of multi-channel recordings of acoustic noise in diverse environments

DEMAND: Diverse Environments Multichannel Acoustic Noise Database A database of 16-channel environmental noise recordings Introduction Microphone arrays, a (typically regular) arrangement of several microphones, allow for a number of interesting signal processing techniques. The correlation of audio signals from microphones that are located in close proximity with each other can, for example, be used to determine the spatial location of sound source relative to the array, or to isolate or enhance a signal based on the direction from which the sound reaches the array. Typically, experiments with microphone arrays that consider acoustic background noise use controlled environments or simulated environments. Such artificial setups will in general be sparse in terms of noise sources. Other pre-existing real-world noise databases (e.g. the AURORA-2 corpus, the CHiME background noise data, or the NOISEX-92 database) tend to provide only a very limited variety of environments and are limited to at most 2 channels. The DEMAND (Diverse Environments Multichannel Acoustic Noise Database) presented here provides a set of recordings that allow testing of algorithms using real-world noise in a variety of settings. This version provides 15 recordings. All recordings are made with a 16-channel array, with the smallest distance between microphones being 5 cm and the largest being 21.8 cm. License This work, the audio data and the document describing it, is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. The data A description of the data and the recording equipment is provided in the file DEMAND.pdf. All recordings are available as 16 single-channel WAV files in one directory at both 48 kHz and 16 kHz sampling rates. All files are compressed into "zip" files. Other information The MATLAB scripts listed in the documentation can be found in the file scripts.zip. The Authors This work was created by Joachim Thiemann (IRISA-CNRS), Nobutaka Ito (University of Tokyo), and Emmanuel Vincent (Inria Rennes - Bretagne Atlantique). It was supported by Inria under the Associate Team Program VERSAMUS.

DEMAND：多环境多通道声学噪声数据库（Diverse Environments Multichannel Acoustic Noise Database）——一款16通道环境噪声录音数据库

简介
麦克风阵列（microphone arrays）通常指由多个麦克风按规则排布组成的系统，可支撑多种颇具应用价值的信号处理技术。例如，近距离布置的麦克风所采集的音频信号之间的相关性，可用于确定声源相对于阵列的空间位置，或根据声音到达阵列的方向分离或增强目标信号。当前针对麦克风阵列的声学背景噪声实验，多采用受控环境或模拟环境，此类人工搭建的场景往往噪声源较为稀疏。现有已公开的真实世界噪声数据库，如AURORA-2语料库、CHiME背景噪声数据集、NOISEX-92数据库等，通常仅能提供极为有限的环境种类，且最多仅支持2个通道。本次发布的DEMAND（多环境多通道声学噪声数据库）提供了一系列真实环境下的录音，可支持在多样化场景中测试相关算法。本版本共包含15段录音，所有录音均采用16通道阵列采集，麦克风最小间距为5厘米，最大间距为21.8厘米。

许可协议
本作品、音频数据及相关说明文档，均采用知识共享署名-相同方式共享3.0未移植许可（Creative Commons Attribution-ShareAlike 3.0 Unported License）。

数据集详情
数据采集设备及数据集的详细说明可参阅文件DEMAND.pdf。所有录音均以16个单声道WAV文件形式存储，分别提供48 kHz与16 kHz两种采样率，存放于同一目录下，所有文件均打包为ZIP压缩包。

附加信息
文档中提及的MATLAB脚本可于scripts.zip文件中获取。

作者信息
本作品由Joachim Thiemann（法国国家科研中心雷恩信息科学与随机系统研究所，IRISA-CNRS）、伊藤伸孝（东京大学）以及Emmanuel Vincent（法国国家信息与自动化研究所雷恩-布列塔尼大西洋研究中心，Inria Rennes - Bretagne Atlantique）共同完成。本项目得到法国国家信息与自动化研究所（Inria）的VERSAMUS联合团队计划资助。

搜集汇总

背景与挑战

背景概述

DEMAND是一个多通道环境噪声录音数据库，包含15种不同环境的16通道录音，采样率为48kHz和16kHz，适用于麦克风阵列信号处理算法的测试和研究。