| Standard No.: | GB/T 4854.7-1999 |
| Chinese Name: | 声学 校准测听设备的基准零级 第7部分：自由场与扩散场测听的基准听阈 |
| English Name: | Acoustics-Reference zero for the calibration of audiometric equipment-Part 7：Reference threshold of hearing under free-field and diffuse-field listening conditions |
| Professional Classification: | A42 Physics and Mechanics |
| Professional Classification: | GB National Standard |
| ICS Classification: |
17.140.01 Acoustic measurements and noise abatement in general
|
| Issued by: | |
| Issued on: | 1999-03-08 |
| Implemented on: | 1999-09-01 |
| Status: |
ABOLISHED |
| Replace By: | GB/T4854.7-2008 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
|
| Replace By Date: | 2009-02-01 |
| Language: | English |
| File Format: | PDF |
| Word Count: | |
| Price(USD): | please email coc@codeofchina.com for quotation
|
| Delivery: | via email in
1-3 business day
|
