数字影厅B环电声响应技术标准解析和调试方法探讨  

A research on technical standard interpretation and calibration methods discussion towards B-chain electro-acoustic response in digital cinemas

作　　者：张辉 Zhang Hui(China Research Institute of Film Science&Technology (Test Institute of Film Technical Quality))

机构地区：[1]中国电影科学技术研究所(中央宣传部电影技术质量检测所),北京100086

出　　处：《现代电影技术》2024年第12期50-55,共6页Advanced Motion Picture Technology

摘　　要：数字影厅B环电声响应特性是指数字影院音响系统对电信号的响应情况。本文首先概述数字影厅B环电声响应特性相关技术标准,对GY/T 312—2017《电影录音控制室、室内影厅B环电声响应规范和测量》中涉及的核心技术条款进行解读,总结调试和测量过程中遇到的问题,最后提出一种合理的B环电声响应调试方法,以期为数字影厅相关调试提供技术保障,推动国内数字影厅整体还音技术良性健康有序发展。The electro-acoustic response characteristic of digital cinema B-chain refers to the specific response of audio system to electrical signals within digital cinema.This article first elaborates the technical standards related to B-chain electro-acoustic response characteristics of digital cinema,followed with interpreting the essential technical articles in GY/T 312—2017 Cinematography — B-chain electro-acoustic reponse of motion-picture control rooms and indoor theatres —Specifications and measurements.The author also illustrates problems encountered during field calibrating and testing,and proposes an applicable measuring method for B-chain electro-acoustic response in digital cinema.The proposed method aims at providing requisite technical support for the calibration of digital cinemas,therefore advancing a positive and healthy development towards the overall sound reproduction technology within domestic digital cinemas.

关 键 词：B环电声响应 基本调试声压级 粉红噪声 频率响应特性 

分 类 号：J943[艺术—电影电视艺术]