Establishment of a sound field reproduction method with high flexibility

高灵活性声场再现方法的建立

基本信息

  • 批准号:
    17560336
  • 负责人:
  • 金额:
    $ 2.3万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2005
  • 资助国家:
    日本
  • 起止时间:
    2005 至 2006
  • 项目状态:
    已结题

项目摘要

Recording and reproduction of a three-dimensional sound field with high flexibility is important for high-performance collaboration in a tele-collaboration system. The purpose of this research is to establish a sound field reproduction method that compensates for individuality of binaural signals, which are recorded with two microphones embedded in the two ears of a dummy head (acoustical mannequin) and reproduced via headphones.Two kinds of sound fields were addressed in the term of this research project : One was a dead field intended in FY 2005 and the other was a reverberant field intended in FY 2006. Reverberation of a room is observed as peaks and dips in an acoustic transfer function measured in the room. When the ARMA (Auto-Regressive Moving-Average) model is applied to the transfer function, reverberation can be controlled by controlling the numbers and locations of poles and zeros in the z-plane. In FY 2005, a compensation function proposed in this research was obtained by smoothing the transfer functions with reduced numbers of poles and zeros. In FY 2006, a compensation function for a reverberant room was obtained by adding peaks and dips which were derived by using the ARMA model. The effects of these compensation functions were evaluated by psychoacoustical experiments. Experimental results show that the proposed compensation functions are effective for sound quality as well as sound localization if the numbers of poles and zeros are adequate.Besides the above mentioned research, the following two research items were undertaken :1. It was shown that controlling sound field information in a tele-collaboration system brings high word intelligibility irrespective of talking face images.2. A two-channel measurement system of HpTFs (Headphone-to-ear-canal Transfer Functions) was constructed using a DSP (Digital Signal Processor) starter kit.
具有高灵活性的三维声场的记录和再现对于远程协作系统中的高性能协作是重要的。本研究的目的是建立一种声场再现方法,以补偿双耳信号的个性,这是由两个麦克风嵌入在一个假人头部的两个耳朵记录(声学人体模型)并通过耳机再现。本研究项目涉及两种声场:一个是2005财年计划的死场,另一个是2006财年计划的混响场。房间的混响被观察为在房间中测量的声学传递函数中的峰和谷。当将阿尔马(自回归移动平均)模型应用于传递函数时,可以通过控制z平面中的极点和零点的数量和位置来控制混响。在2005财政年度,在这项研究中提出的补偿函数是通过平滑的传递函数减少极点和零点的数量。在2006财政年度,混响室的补偿函数是通过添加波峰和波谷得到的,波峰和波谷是通过使用阿尔马模型得到的。这些补偿功能的效果通过心理声学实验进行了评估。实验结果表明,在极点和零点数目足够的情况下,所提出的补偿函数对音质和声源定位都是有效的。结果表明,在远程协作系统中控制声场信息,无论说话人的面部图像如何,都能带来较高的文字可懂度.利用DSP(Digital Signal Processor)Starter Kit构建了一个双通道耳机耳道传递函数(Headphone-to-Ear-canal Transfer Functions,HpTF)测量系统。

项目成果

期刊论文数量(24)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
DSP Starter Kitを用いた2 チャネルインパルス応答測定系の構築
使用 DSP 入门套件构建 2 通道脉冲响应测量系统
Effects of reproduction methods and high-efficiency audio coding on word intelligibility with competing talkers (in Japanese)
再现方法和高效音频编码对竞争发言者的单词清晰度的影响(日语)
A two-channel impulse response measurement system based on a DSP starter kit
基于 DSP 入门套件的双通道脉冲响应测量系统
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Kenji Fukasawa;Junichi Nakagai;Kenji Ozawa;深澤賢至;糸数真;Daisuke Yamagishi
  • 通讯作者:
    Daisuke Yamagishi
A headphone-to-ear-canal transfer function calibration system based on a DSP Starter Kit (in Japanese)
基于 DSP 入门套件的耳机到耳道传递函数校准系统(日语)
Resolution of the constraint condition for sound fields in binaural equalization (in Japanese)
双耳均衡中声场约束条件的解析(日文)
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OZAWA Kenji其他文献

OZAWA Kenji的其他文献

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{{ truncateString('OZAWA Kenji', 18)}}的其他基金

Formulation of a recording method of the entire sound field by the fusion of acoustical signal processing and artificial intelligence technology
融合声学信号处理与人工智能技术制定全声场录音方法
  • 批准号:
    16K06384
  • 财政年份:
    2016
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
COMPONENT STUDY ON DEVICES FOR AUDITORY PROSTHESIS AND AUSCULTATION BASED ON KANSEI BRAIN SCIENCE
基于感性脑科学的听觉假肢和听诊装置的组件研究
  • 批准号:
    20300076
  • 财政年份:
    2008
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Experimental verification of hierarchical structure in Kansei processing
感性加工中层次结构的实验验证
  • 批准号:
    15500131
  • 财政年份:
    2003
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Establishment of a method to reconstruct of spatial information of sound in the receiver side of the sound
声音接收端声音空间信息重构方法的建立
  • 批准号:
    13650404
  • 财政年份:
    2001
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
A study on multidimensional and quantitative evaluation of visual and auditory presence
视觉和听觉存在感的多维度定量评价研究
  • 批准号:
    11832008
  • 财政年份:
    1999
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Dynamic perception process of the three dimensional spatial hearing
三维空间听觉的动态感知过程
  • 批准号:
    10835001
  • 财政年份:
    1998
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
A study on dynamic information processing system in the hierarchical structure of the hearing sense
听觉层次结构动态信息处理系统的研究
  • 批准号:
    09838003
  • 财政年份:
    1997
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
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