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发表于 2006-9-20 09:50:00
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我们公司内部会过一些测试,包含以下几点:
1.Frequency Response ,
Condition:From 22KHz to 20Hz , Stereo , 0dBFS (1Vrs) ; Sample rate=44.1KHz , Resolution=16bit ; ∆ V = || Right – Left ||
Criteria:∆ V < 3dB(Freq<=550Hz)
2.Total Harmonic Distortion,
Condition:997Hz, 0dBFS (1Vrms) ; Sample rate=44.1KHz , Resolution=16bit ; BW= 20Hz~22kHz ;
Criteria:<5%
3.Cross Talk (Channel Separation)
Condition:997Hz, 0dBFS (1Vrms) ; R Channel only Criteria: (R/L) >50dB
997Hz, 0dBFS (1Vrms) ; L Channel only (L/R) >50dB |
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