sunlincong 发表于 2011-10-5 10:40:20

提供两种小学级别的解释

http://broadcastengineering.com/newsrooms/broadcasting_analog_audio_noise/

      Table   1. Open load SNR at dynamic microphone output         SPL   (dB)         Microphone   output voltage (μV)         SNR   (dB)   120
20,000.00
99.21
74
100.00
53.19
61
22.40
40.19
34
1.00
13.19




http://www.akg.com/site/service_glossary/powerslave,id,53,nodeid,9,_language,EN.html



Sensitivity(dB/mW)

The sound pressure level that eachspeaker generates when driven by a signal with a power of 1 mW. Thesensitivity is usually stated for a 1-kHz signal.
At the usual maximum power rating of 200 mW for a pair of headphones, theresulting sound pressure level will be 23 dB higher than the sensitivity,which would be equivalent to approx. 124 dB for the AKG K 141 Studio!
Warning: Listening at high soundpressure levels may damage your hearing.

sunlincong 发表于 2011-10-5 10:44:50

不好意思 上楼表格的格式错了

SPL(dB)Microphone output voltage (μV)SNR(dB) 120 20,000,00 99.21 74 100,00 53.19 61 22.40 40.19 34 1.00 13.19
页: 1 [2]
查看完整版本: 125 dB SPL/V换算成标准灵敏度是多少

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