GB/T 6659-1986 English Version, GB/T 6659-1986 Measurement of electroacoustical characteristics of hearing aids with automatic gain control circuits (English Version)

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GB/T 6659-1986 Measurement of electroacoustical characteristics of hearing aids with automatic gain control circuits (English Version)
Standard No.:	GB/T 6659-1986	Status:	superseded remind me the status change Email:
Target Language:	English	File Format:	PDF
Word Count:	2000 words	Translation Price(USD):	180.0 remind me the price change Email:
Implemented on:	1987-8-1	Delivery:	via email in 1~3 business day

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Standard No.:	GB/T 6659-1986
English Name:	Measurement of electroacoustical characteristics of hearing aids with automatic gain control circuits
Chinese Name:	具有自动增益控制电路的助听器电声特性的测量方法
Chinese Classification:	M72 Sound and electronic sound equipment
Professional Classification:	GB National Standard
ICS Classification:	33.160.10 33.160.10 Amplifiers 33.160.10
Source Content Issued by:	SAC
Issued on:	1986-07-31
Implemented on:	1987-8-1
Status:	superseded
Superseded by:	GB/T 25102.2-2010 Electroacoustics—Hearing aids—Part 2:Hearing aids with automatic gain control circuits
Superseded on:	2011-4-1
Abolished on:	2011-04-01
Target Language:	English
File Format:	PDF
Word Count:	2000 words
Translation Price(USD):	180.0
Delivery:	via email in 1~3 business day

Standard

GB/T 6659-1986 Measurement of electroacoustical characteristics of hearing aids with automatic gain control circuits (English Version)
Standard No.	GB/T 6659-1986
Status	superseded
Language	English
File Format	PDF
Word Count	2000 words
Price(USD)	180.0
Implemented on	1987-8-1
Delivery	via email in 1~3 business day

Detail of GB/T 6659-1986

Standard No.

English Name

Chinese Name

Chinese Classification

Professional Classification

ICS Classification

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Implemented on

Status

Superseded by

Superseded on

Abolished on

Superseding

Language

File Format

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Price(USD)

Keywords

Introduction of GB/T 6659-1986

本标准规定了具有自动增益控制的助听器的动态工作特性和稳态工作特性及其测量方法。本标准只叙述各种不同特性及有关测量方法，没有规定各性能指标。本标准包括对于输入信号的包络具有压缩或限幅功能的装置及长时间平均输出控制的装置。采用自动增益控制电路压缩或减少输出声压的动态范围，以保持输出信号的完整性。通常采用自动增益控制电路代替削峰装置进行限幅。当对较大的信号输人时，就会使输入-输出特性趋于平直。限幅装置的作用主要是防止助听器输出过大的声音进入听者耳朵。本标准不包括：扩展器。限幅装置，削去某规定电平上的峰值信号的限幅装置不同于自动增益控制电路。限幅装置可以削掉高于一定信号电平的信号峰值。而自动增益控制电路，在稳态时能保持输入信号波形不变。

Contents of GB/T 6659-1986

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