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Experimental Study on Acoustical Effects of Concert Hall to Music Players

音乐厅对演奏者声学影响的实验研究

基本信息

批准号：
09450214
负责人：
TACHIBANA Hideki
金额：
$ 7.81万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09450214/
关键词：
Concert hall Stage acoustics Acoustical design Music players Subjective test Multi-channel reproduction system Impulse response

项目摘要

In concert hail acoustics, auditory impression of music players on the stage is essentially important as well as that of the audience. On this point, basic investigations to make clear the favorable conditions for players have been carried out in this study by field measurements and laboratory experiments.This research consists of two main contents : physical investigation and psychological experiment. For the former study, special technique and equipment to measure the acoustic condition on a stage was contrived, and actual field measurements were performed in various type of concert halls. From these results, the constructions of impulse response corresponding to the architectural factors were investigated.In order to investigate the relationships between players' auditory impression and the acoustic conditions on the stages, two kinds of sound field simulation techniques have been newly developed in this study : one is multi-channel reproduction system set in an anechoic room and the other is binaural simulation system using a headphone. Both of these system were realized by real-time digital computing system. By using these technique, several experiments on such acoustic phenomena as early reflections from stage reflectors and long-delayed reflections from the rear part of the audience area were performed. As a result, it has been confirmed that the early reflections which are not clearly distinctive for general subjects could be effective for players. Concerning long-delayed reflections, it has been found that this kind of reflection can be beneficial if its delay time and strength are appropiate.

在音乐会音响中，舞台上音乐演奏者的听觉印象和听众的听觉印象一样重要。在这一点上，本研究通过实地测量和实验室实验进行了基础调查，明确了球员的有利条件。本研究包括物理调查和心理实验两个主要内容。对于前一项研究，设计了专门的技术和设备来测量舞台上的声学状况，并在各种类型的音乐厅进行了实际的现场测量。从这些结果出发，研究了与结构因素相对应的脉冲响应的构造。为了研究演奏者的听觉印象与舞台声学条件之间的关系，本研究新开发了两种声场模拟技术：一种是设置在消声室内的多声道再现系统，另一种是使用耳机的双耳模拟系统。这两个系统都是通过实时数字计算系统实现的。利用这些技术，对舞台反射镜的早期反射和观众席后部的长延迟反射等声学现象进行了实验。因此，已经证实，早期的反射对一般对象来说不明显，但对玩家来说是有效的。对于长延迟反射，研究发现，如果其延迟时间和强度适当，这种反射是有益的。