で物を持ってないので確証は持てませんがHTの仕様書には The following ? bytes (??h-??h) have to be read from E2PROM by driver and then written to setup the codec configuration, unless otherwise noted. という文章がいくつかあるのでその場所に応じたところを書き換えれば まともなドライバはちゃんと読み込んで動作してくれるとは思いますが・・・・ やり方としてはbinファイルをバイナリエディタで書き換えるのが一般的かな?
それはともかく >The VIA Envy24HT-S Audio Controller is tailored for the mainstream soundcard market with leading feature support for the latest 8-channel DVD audio tracks enabling perfect home theatre performance. >With support for 24-bit 192kHz digital inputs and outputs, and 20-bit/48KHz analog connections, >http://www.via.com.tw/en/Digital%20Library/PR030915Envy24HT-S.jsp
>>471 >For higher end applications the VIA Envy24HT-S can be paired with high-end ADCs and DACs through the I2S interface enabling a professional 2-channel 24/96 solution. http://www.via.com.tw/en/multimedia/envy24ht-s.jsp
Frequency response (from 40 Hz to 15 kHz), dB: +0.04, -0.31 Very good Noise level, dB (A): -82.5 Good Dynamic range, dB (A): 82.1 Good THD, %: 0.011 Good IMD, %: 0.035 Good Stereo crosstalk, dB: -65.2 Good
Frequency response (from 40 Hz to 15 kHz), dB: +0.04, -0.31 Very good Noise level, dB (A): -82.9 Good Dynamic range, dB (A): 82.2 Good THD, %: 0.0099 Very good IMD, %: 0.031 Good Stereo crosstalk, dB: -65.0 Good
Frequency response (from 40 Hz to 15 kHz), dB: +0.00, +0.00 Excellent Noise level, dB (A): -87.7 Good Dynamic range, dB (A): 86.1 Good THD, %: 0.010 Good IMD, %: 0.020 Very good Stereo crosstalk, dB: -68.0 Good
Frequency response (from 40 Hz to 15 kHz), dB: +0.17, -1.40 Average Noise level, dB (A): -85.1 Good Dynamic range, dB (A): 86.2 Good THD, %: 0.015 Good IMD, %: 0.023 Good Stereo crosstalk, dB: -67.7 Good
Frequency response (from 40 Hz to 15 kHz), dB: +0.04, -0.50 Good Noise level, dB (A): -93.2 Very good Dynamic range, dB (A): 92.7 Very good THD, %: 0.018 Good IMD, %: 0.019 Very good Stereo crosstalk, dB: -75.5 Very good
Summary Frequency response (from 40 Hz to 15 kHz), dB: +0.02, -0.13 Very good Noise level, dB (A): -104.3 Excellent Dynamic range, dB (A): 91.2 Very good THD, %: 0.0042 Very good IMD, %: 0.0075 Excellent Stereo crosstalk, dB: -93.6 Excellent
Summary Frequency response (from 40 Hz to 15 kHz), dB:+0.33, -0.32Good Noise level, dB (A):-84.2Good Dynamic range, dB (A):83.8Good THD, %:0.0085Very good IMD, %:0.068Good Stereo crosstalk, dB:-80.2Very good
Summary Frequency response (from 40 Hz to 15 kHz), dB: +0.05, -0.49 Good Noise level, dB (A): -87.9 Good Dynamic range, dB (A): 87.7 Good THD, %: 0.015 Good IMD, %: 0.021 Good Stereo crosstalk, dB: -63.1 Average
(VT1616) Frequency response (from 40 Hz to 15 kHz), dB: +0.04, -0.32 Very good Noise level, dB (A): -90.0 Very good Dynamic range, dB (A): 89.5 Good THD, %: 0.012 Good IMD, %: 0.019 Very good Stereo crosstalk, dB: -70.1 Good
(WM8728) Frequency response (from 40 Hz to 15 kHz), dB: +0.05, -0.48 Good Noise level, dB (A): -86.7 Good Dynamic range, dB (A): 86.5 Good THD, %: 0.012 Good IMD, %: 0.026 Good Stereo crosstalk, dB: -62.5 Average
あまりにもおかしいとのことなんで測りなおしてみました Frequency response (from 40 Hz to 15 kHz), dB: +0.04, -0.50 Good Noise level, dB (A): -92.5 Very good Dynamic range, dB (A): 91.5 Very good THD, %: 0.011 Good IMD, %: 0.018 Very good Stereo crosstalk, dB: -71.7 Good
Sampling mode: 16-bit, 48 kHz (CS4341) Frequency response (from 40 Hz to 15 kHz), dB: +0.04, -0.15 Very good Noise level, dB (A): -92.1 Very good Dynamic range, dB (A): 93.3 Very good THD, %: 0.0082 Very good IMD, %: 0.015 Very good Stereo crosstalk, dB: -79.9 Very good
(VT1616) Frequency response (from 40 Hz to 15 kHz), dB: +0.05, -0.30 Very good Noise level, dB (A): -93.4 Very good Dynamic range, dB (A): 93.2 Very good THD, %: 0.011 Good IMD, %: 0.217 Average Stereo crosstalk, dB: -84.9 Very good
( CS4341 ) L: -1.3 db , R: -1.4 db Frequency response (from 40 Hz to 15 kHz), dB: +0.04, -0.15 Very good Noise level, dB (A): -92.0 Very good Dynamic range, dB (A): 93.2 Very good THD, %: 0.011 Good IMD, %: 0.018 Very good Stereo crosstalk, dB: -78.6 Very good General performance: Very good
( VT1616 ) L: -1.1 db , R: -1.0 db Frequency response (from 40 Hz to 15 kHz), dB: +0.05, -0.30 Very good Noise level, dB (A): -92.2 Very good Dynamic range, dB (A): 92.0 Very good THD, %: 0.015 Good IMD, %: 0.204 Average Stereo crosstalk, dB: -81.6 Very good General performance: Good
CT4830 Frequency Response 20-20kHz +0.0/- 3.8 dB 1 kHz Total Harmonic Distortion 0.003% @ -0.3 dB 20 Hz Total Harmonic Distortion 0.004% @ -3.4 dB Signal to Noise Ratio 83 dB 19 & 20 kHz Intermodulation Distortion 0.002% @-0.002 dB* Dynamic Range 84 dB Jitter Distortion -85 dB# Zero Signal Noise -94 dB
CT4620 Frequency Response 30-15 KHz +0.1/- 1.1 dB 1 KHz Total Harmonic Distortion 0.002% @ -0.2 dB Signal to Noise Ratio 69 dB 19 & 20 KHz Intermodulation Distortion 0.007% @-0.25 dB Dynamic Range 73 dB Jitter Distortion <-90 dB
(WM8728) Summary Frequency response (from 40 Hz to 15 kHz), dB: +0.04, -0.50 Good Noise level, dB (A): -95.2 Excellent Dynamic range, dB (A): 93.6 Very good THD, %: 0.012 Good IMD, %: 0.015 Very good Stereo crosstalk, dB: -80.3 Very good
(VT1616) Summary Frequency response (from 40 Hz to 15 kHz), dB: +0.04, -0.32 Very good Noise level, dB (A): -92.1 Very good Dynamic range, dB (A): 91.2 Very good THD, %: 0.015 Good IMD, %: 0.017 Very good Stereo crosstalk, dB: -82.1 Very good
Frequency response (from 40 Hz to 15 kHz), dB: +0.11, -0.03 Excellent Noise level, dB (A): -86.3 Good Dynamic range, dB (A): 85.8 Good THD, %: 0.0032 Very good IMD, %: 0.017 Very good Stereo crosstalk, dB: -78.8 Very good