 |
Chinese Classification
Professional Classification
ICS Classification
Latest
Value-added Services
|
| Chinese National Standard Category: Acoustic Measurement |
| English Title: | Electroacoustics—Measurement microphones—Part 7: Values for the difference between free-field and pressure sensitivity levels of laboratory standard microphones |
| Chinese Title: | 电声学 测量传声器 第7部分:实验室标准传声器的自由场灵敏度级和声压灵敏度级之间的差值 |
| Standard No.: | GB/T 20441.7-2025 |
| Category No.: | A59 |
| Issued by: | SAMR; SAC |
| Issued on: | 2025-05-30 |
| Implemented on: | 2025-5-30 |
| Status: | valid |
| Superseded by: | |
| Superseded on: | |
| Abolished on: | |
| Superseding: | |
| Word Count: | 9000 words |
| Similar Standards: | GB/T 4130.1-2025 GB/T 45726-2025 GB/T 20441.8-2025 GB/T 20441.7-2025 GB/T 17249.1-2025 GB/T 17249.2-2025 GB/T 16405-2025 GB/T 3241.1-2025 GB/T 3241.2-2025 GB/T 5111-2024 GB 7966-1987 GB/T 6881-2023 GB/T 42473-2023 GB/T 3785.2-2023 GB/T 3785.1-2023 GB/T 42559-2023 GB/T 42553-2023 GB/T 19889.7-2022 GB/T 17248.1-2022 GB/T 19889.2-2022 |
| Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | QQ: 672269886 |
| Copyright: Beijing COC Tech Co., Ltd. 2008-2020 |