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:whistling:
/ c+ {$ {& \1 L9 a' {9 e8 Upk的是废拆的7.1哦:shifty: 不是主声道: o# x# ]/ ^8 ?' ], c$ l7 G" y% Q
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最近比较懒,这么多图不肯都贴了,就贴一部分连一部分吧
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http://www.itocp.com/thread-2765-1-1.html2 E4 ~6 q4 ?; Z7 t. K8 n
7 y/ L) E. ]& F1 V0 y( [# m _" _在阅读本文之前,先明确一个事情,就是本文采用的系统比较yd,属于接近极限的测试4 p! \: K% x8 U+ R; R o
别指望随便找个板子,随便找个电源就可以得到类似效果1 b, W" ?* b, x9 j J6 k
6 a& }( W' r0 K/ F* E4年前HDAUDIO就诞生了吧$ F$ g8 c6 f6 m' w' C' a g
集成声卡开始支持2496,这是非常大的飞跃
3 ?. i" j. r# f" d; z P同时3D音效也有长足进步,进一步挤压独立声卡1 U3 A6 D6 U! W. u" S$ |
闹得现在独立声卡全给挤到专业和高端领域去了
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" n" c; S, E) W/ {7 g9 F) p& N3 T不是支持2496就能达到2496的好效果的
- J. ~" X0 t/ ?" E( @3 N: a同样,不是能放cd就能把cd放出色的
& x& |! A, ~# r( l1 a4 z0 _ M所以,HDaudio究竟能到什么层次,这是需要仔细测试的
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/ B" h- ~* A# k) T+ y测试平台:
+ z( v' i+ Z: l, x le6850 3g
- X- U+ d j+ ]$ \team ddr2 8001 c' @; C% K. {
msi p35pt ALC888T q6 x- _7 O* p6 {
inno 8800gts 640
: U; O+ o8 n9 d1 Hse200 pci
; y9 ?& A! _* e. N, a( lintel 82559
- D. |/ E3 e* K+ _/ \0 x三个日立硬盘,一个wd硬盘: F& s, V$ \" B/ U( n, J; I% n
成色很新的nmb460
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测试软件依旧是rmaa 6.06
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, t' K h6 K' J5 T" Z. Iwm 8776数据:6 P. W" `. G6 c2 ~
1 O; B) g$ t3 r2 u* Audio Performance
0 T1 U2 k. |; @$ k* _4 I* 108dB SNR (‘A’ weighted @ 48kHz) DAC
0 f( E& e: }: m* 102dB SNR (‘A’ weighted @ 48kHz) ADC
6 c1 O* N2 d& |7 }5 I% k( B* DAC Sampling Frequency: 32kHz – 192kHz, A0 {2 a/ v& |% N
* ADC Sampling Frequency: 32kHz – 96kHz
5 v: @, s9 D# A: W* Five Stereo ADC Inputs with Analogue Gain Adjust from +24dB to –21dB in 0.5dB Steps9 G5 o5 \* h5 f* v: {" q9 ]
* Programmable Limiter or Automatic Level Control (ALC)! o6 U: ? _! Q' ^
* Stereo DAC with Independent Analogue and Digital Volume Controls! }7 i; `" A, Z, r' r( r
* Stereo Headphone and Line Output* p0 n/ ~+ v. H3 W8 K; `' K
* 3-Wire SPI Compatible or 2-Wire Software Serial Control Interface
' M9 }7 z5 N b7 `# G* Master or Slave Clocking Mode! P2 y/ n. t/ J$ W
* Programmable Audio Data Interface Modes9 y; H! d; R6 }: ^
* I2S, Left, Right Justified or DSP
1 s+ p. j! |/ D. m5 i2 Z9 I$ X* 16/20/24/32 bit Word Lengths( Z% m7 e3 U/ l- j. W
* Analogue Bypass Path Feature
0 V, a, z0 i) L, F: c. A* Selectable AUX Input to the Volume Controls
1 H+ p' S$ l. z3 ^! A7 }% ^+ n' w* 2.7V to 5.5V Analogue, 2.7V to 3.6V Digital Supply Operation& Q2 C7 L9 i% g2 T. _& f
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alc888t数据:5 |9 k5 c4 q% E8 _+ p d4 @
High-performance DACs with 97dB SNR (A-Weighting), ADCs with 90dB SNR (A-Weighting) Ten DAC channels support 16/20/24-bit PCM format for 7.1 sound playback, plus 2 channels of independent stereo sound output (multiple streaming) through the front panel output Two stereo ADCs support 16/20/24-bit PCM format, one for stereo microphone, one for legacy mixer recording All DACs supports 44.1k/48k/96k/192kHz sample rate All ADCs support 44.1k/48k/96k sample rate 16/20/24-bit S/PDIF-OUT supports 44.1k/48k/96k/192kHz sample rate 16/20/24-bit S/PDIF-IN supports 44.1k/48k/96k/192kHz sample rate Up to four channels of microphone array input are supported for AEC/BF applications High-quality analog differential CD input Supports external PCBEEP input and built-in digital BEEP generator Software selectable 2.5V/3.75V VREFOUT Two jack detection pins each designed to detect up to 4 jacks Supports legacy analog mixer architecture Wide range (–80dB ~ +42dB) volume control with 1.5dB resolution of analog to analog mixer gain Software selectable boost gain (+10/+20/+30dB) for analog microphone input All analog jacks are stereo input and output re-tasking for analog plug & play Built-in headphone amplifiers for each re-tasking jack Two GPIOs (General Purpose Input and Output) for customized applications Supports anti-pop mode when analog power AVDD is on and digital power is off. 64-pin LQFP 'Green' package Meets Microsoft WHQL/WLP 3.0 audio requirements WaveRT-based audio function driver for Windows Vista EAX™ 1.0 & 2.0 compatible Direct Sound 3D™ compatible A3D™ compatible I3DL2 compatible HRTF 3D Positional Audio Emulation of 26 sound environments to enhance gaming experience 10-Band Software Equalizer 7 D- o/ E2 _% ?9 K
官方数据并不支持24/88.2
- q/ `$ t$ \1 \, G2 H+ @不过我实际用foobar 可以ssrc到24/88.2,但是rmaa测不到24/88
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& ?2 m5 i3 X) e5 k) C6 e录音卡依旧是se200:whistling:1 q- ~# @6 x9 j9 m
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[ 本帖最后由 Dr.BT 于 2008-2-9 17:45 编辑 ] |
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