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音质测试结果参考

Device DAC Noise Level Full-scale Level SNR Freq Resp THD+N
MacBook Air 13 Early 2017 Cirrus Logic CS4208 -96.1 dBu -0.6 dBu 87.9 dB -0.0 +0.0 -93.6 dB
MacBook Pro 15 Mid 2015 Cirrus Logic CS4208 -94.0 dBu 4.8 dBu 98.8 dB -0.0 +0.0 -93.1 dB
MacBook Air 13 Late 2020 ? -101.3 dBu 2.2 dBu 103.5 dB -0.1 +0.0 -92.0 dB
iPhone 6 Cirrus Logic 338S1201 -101 dBu 2.2 dBu 88.2 dB -0.1 +0.0 -89.8 dB
ThinkPad X201 Conexant CX20585 -86.5 dBu -7.1 dBu 77.0 dB -0.2 +0.0 -86.8 dB
ThinkPad X220 Conexant CX20672 -86.9 dBu -6.4 dBu 77.9 dB -0.2 +0.0 -86.6 dB
ThinkPad X230 Realtek ALC269 -83.1 dBu -6.4 dBu 77.9 dB -0.1 +0.0 -85.8 dB
MacBook Pro 13 Late 2011 Cirrus Logic CS4206B -85.8 dBu 4.8 dBu 87.2 dB -0.9 +0.0 -82.6 dB
ThinkPad X200 Conexant CX20561 -77.9 dBu 1.1 dBu 75.3 dB -0.1 +0.0 -79.3 dB
ThinkPad X61 Analog Devices AD1984 -78.6 dBu 0.7 dBu 76.9 dB -0.2 +0.0 -75.6 dB
ThinkPad X40 Analog Devices AD1981B -93.1 dBu 0.5 dBu 75.3 dB -0.1 +0.1 -74.5 dB
ThinkPad X41 Analog Devices AD1981B -90.3 dBu 0.1 dBu 72.1 dB -0.2 +0.1 -74.3 dB
ThinkPad X301 Analog Devices AD1984A -82.9 dBu -10.6 dBu 66.5 dB -0.1 +0.0 -69.2 dB
ThinkPad X60 Analog Devices AD1981HD -91.0 dBu 1.1 dBu 75.0 dB -1.9 +0.0 -68.8 dB
ThinkPad X20 Cirrus Logic CS4281 -83.4 dBu -4.0 dBu 66.3 dB -0.4 +0.4 -56.2 dB
ThinkPad X30 Analog Devices AD1981A -83.5 dBu -0.6 dBu 68.6 dB -0.6 +0.1 -53.7 dB
ThinkPad X31 Analog DEvices AD1981B -82.7 dBu -0.9 dBu 67.7 dB -0.7 +0.1 -53.4 dB
ThinkPad X23 Cirrus Logic CS4299 -83.5 dBu -2.2 dBu 66.2 dB -0.5 +0.4 -51.4 dB

Note:

  1. The full-scale level means the highest output level without clipping.
  2. The noise-level means the lowest A-weighted noise level at any volume settings.
  3. The SNR is measured with a -60dBFS sine tone at 997 Hz presenting (AES17 standard).
  4. The THD+N is the average THD+N between 20Hz and 10kHz at 1/3 octave step (AES17).
  5. The frequency response is the worst value between 20Hz and 15kHz.

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