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| Position: Chinese Standard in English/GB 7342-1987 |
| GB 7342-1987 IEC provisional reference coupler for the calibration of earphones used in audiometry (English Version) | |||
| Standard No.: | GB 7342-1987 | Status: | superseded remind me the status change |
| Target Language: | English | File Format: | |
| Word Count: | 1500 words | Translation Price(USD): | 45.0 remind me the price change |
| Implemented on: | 1987-11-1 | Delivery: | via email in 1~3 business day |
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| Standard No.: | GB 7342-1987 |
| English Name: | IEC provisional reference coupler for the calibration of earphones used in audiometry |
| Chinese Name: | 测听耳机校准用IEC临时参考耦合腔 |
| Chinese Classification: | A59 Acoustic Measurement |
| Professional Classification: | GB National Standard |
| Source Content Issued by: | SAC |
| Issued on: | 1987-02-28 |
| Implemented on: | 1987-11-1 |
| Status: | superseded |
| Superseded by: | GB/T 25498.3-2010 Electroacoustics - Simulators of human head and ear - Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry |
| Superseded on: | 2011-5-1 |
| Abolished on: | 2011-05-01 |
| Target Language: | English |
| File Format: | |
| Word Count: | 1500 words |
| Translation Price(USD): | 45.0 |
| Delivery: | via email in 1~3 business day |