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本帖最后由 fox541 于 2009-5-10 00:20 编辑
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/ O+ M" L3 Z( A0 z; P" J: p, [看不出来有何高明之处,还请楼下的兄弟指点 ; z; E, h5 R. ~' \3 i# {
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( V+ t6 g+ N9 f9 _The VX222v2 can be used with a wide choice of audio applications using9 J/ n0 B& N) n4 |; R
; |8 \9 e3 O! N * Microsoft's Wave and DirectSound5 ?8 Q% y' A$ e
* Apple's CoreAudio
6 `# D0 m4 Q% Z2 u, b1 t& k * Steinberg's ASIO! n/ @) e: e& ~
* Linux ALSA& g; L. C& ?# n) j% Y( R
$ v; r s! |/ r& P5 d# C/ \Features' J+ f# M% ^+ P) M6 b
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* Full-duplex
$ }' E8 o/ v: L; e( ] * 2 balanced analog inputs/outputs, supporting +4dBu and -10dBV
) O, e6 `: D# O: G: k * Balanced digital stereo input/output in AES/EBU or S/PDIF formats
. i B% [! B( d/ u * Dedicated Wave mixer, as well as ASIO and Mac control panel
O0 P0 w9 d: w1 ~/ Y * Sample rate: 8 kHz to 48 kHz
: Z7 B' k4 {1 | ]2 L% y$ T; h1 L* ~ * PCM resolution: 8,16 or 24 bit
4 ]& M: h: `+ e, ^$ i2 ^9 ` * Universal PCI compatibility (3.3V ready)( N/ F5 k6 d8 p" J6 U+ \
* Short-length PCI format (only 175 mm/6.875 inches)
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# v3 \/ v3 _! l- A) N# lSpecifications/ @, m) [$ d& d/ R
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Configuration
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* Bus/Format: Universal PCI, slave mode, PCI-X compatible
D) k/ ?6 Q `' Q( V0 t9 ? * Size: 175 mm x 99 mm (VX222-Mic: 226 mm x 99 mm)7 S" A% E N0 @/ X3 O5 Z7 A
* Operating: temp / humidity (non-condensing): 0°C/+50°C ? 5%/90%
5 d: B( Y/ B5 ^ t7 |, i3 i * Storage: temp / humidity (non-condensing): -5°C/+70°C ? 0%/95%
# y- ^/ Q' Y: o! e6 h5 ?- Y, k, D% k * Power requirements (+3.3V / +5V / +12V / –12V): 0.5A / 0.1A / 0.2A / 0.1A
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, N8 M, H* v8 M* g% DInputs / Outputs
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* Analog line inputs (stereo): 1 balanced6 \8 t( Y; b+ s# p% m4 V9 K; {
* Maximum input/impedance: +22 dBu/ >10k?
6 X3 ?4 j5 r7 j3 N1 A% I" o( i * Programmable input gain: digital
% j6 s9 z6 s! C* J * Digital inputs (stereo): 1 AES/EBU5 J2 l9 p$ V; G5 ^; E
* Other inputs: 2 GPI (dry contact)
3 Y5 ^, E6 V. i4 C% A * Analog outputs (stereo): 1 balanced
* K; [" Z$ ^% {9 |$ g * Maximum output/impedance: +22 dBu/low impedance# R( R0 J$ ] N, t
* Programmable output gain: digital and analog
% c0 X9 P% }; q * Digital outputs (stereo): 1 AES/EBU
, A4 F7 f3 ]4 C/ e * Other outputs: headphone (600?), two GPI (relay, 0.5A, 48VCC)8 ?" f. I9 m! {7 D, i
* Access to main status bits of digital frame: Yes. Y# n. i: I" Q* v) i
* AES11 synchronization: Yes
# r' _4 ?0 b6 I& @ * Connectors: 15-pin SUB-D for analog I/O; 15-pin HD SUB-D for digital I/O, sync. and GPI+ S2 D9 r8 n- f
7 ]+ U$ X1 Z& P4 H% F6 ~6 UAudio Specifications
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. { a, G$ q: L g. f4 ` W E * Sampling frequencies available: Programmable from 8 to 50 kHz
9 |. X0 f0 \! `2 B, W8 P( \ * A/D and D/A converter resolution: 24 bit6 }7 t' C9 `( @4 d4 X. w
* Frequency response: 20 Hz – 20 kHz: ±0.2 dB3 s" N0 q, h0 ^5 A7 X R# O3 G
* Signal to noise ratio: >97 dB
$ `) f# O& i' V$ W* x7 s4 H$ y8 s * Distortion + noise at 1 kHz: <-92 dB (0.0025 %)& L& t+ W6 w7 N/ \( Y4 J
* Channel phase difference: 20 Hz/20 kHz 0.5/2
" O6 G% H& d S% o * Analog channel cross talk: <-115 dB |
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