不知有没有火星，32位的DAC开始多起来了，，

sd-iori

WM8741

High Performance Stereo DAC

Advanced Ultra High Performance Multi-bit Sigma-Delta Architecture
-  128dB SNR (‘A’-weighted mono @ 48kHz)
-  125dB SNR (‘A’-weighted stereo @ 48kHz)
6 }' A+ ]8 I0 D' J  |- M-  123dB SNR (non-weighted stereo @ 48kHz)
-  -100dB THD @ 48kHz
% `6 X5 o: s; z% n) d8 Q& @-  Differential analogue voltage outputs
-  High tolerance to clock jitter
. c% g; k0 F4 h/ y3 G+ n, M  jPCM Mode
-  Sampling frequency: 32kHz to 192kHz
-  Input data word length support: 16 to 32-bit
- w$ F, t% a: N-  Supports all standard audio interface formats
-  Selectable advanced digital filter responses
-  Includes linear/minimum phase and range of tailored characteristics
, j! E: q+ ^, ]; Y% d/ r-  Enables low pre-ringing, minimal latency
-  Optional interface to industry standard external filters
8 h% s- L6 z+ v# L/ V' @-  Digital volume control in 0.125dB steps with soft ramp and soft mute
-  Anti-clipping mode to prevent distortion even with input signals recorded up to 0dB
% E8 h: L' M; C. M6 J! b-  Selectable de-emphasis support
$ S2 Z+ ]8 Z) Q, o3 Z-  Zero Flag output
DSD Mode
6 T5 ^* `+ e) d( f# j  k) ~-  DSD bit-stream support for SACD applications
3 Y  x# r" {0 T+ A: p, J-  Support for normal or phase modulated bit-streams
-  Direct or PCM converted DSD paths (DSD Plus)
/ g9 W! h5 I' S9 W4 o& h" A-  DSD mute
Hardware or software control modes:
-  2 and 3 wire serial control interface support
Pin compatible with WM8740
4.5V to 5.5V analogue, 3.0V to 3.6V digital supply operation
28-lead SSOP Package

诸葛亮的很

原帖由 ace11 于 2008-1-27 10:42 发表
真可惜没有相应的32bit音乐格式

有了硬件就能催生音源了:lol:

ace11

真可惜没有相应的32bit音乐格式

诸葛亮的很

:wacko: DAC也有位数的？不是DSP之类的芯片支持么？

sd-iori

AK4397
1 B/ D- d* _) R, j  N+ PPremium 32-Bit DAC with PCM/DSD input
! p/ Z( J4 c9 R( v* P
7 o% |/ {4 ]% D4 tApplications: DVD/DVD-Audio/SACD Player, Digital Mixer,
# V, G% x; z, d' ^Pro Audio and AV Receiver
128x Over sampling
( I, k5 ^. m$ r7 u* RSampling Rate: 30kHz ~ 216kHz
32Bit 8x Digital Filter (Slow-roll-off option)
, W( t7 R+ R( f0 `+ RRipple: ±0.005dB, Attenuation: 75dB
7 ~, c5 @* Z  C* h7 s% q8 I# H, DHigh Tolerance to Clock Jitter
Low Distortion Differential Output
) U( ~8 t/ `+ {* R. F" {DSD data input available
Digital De-emphasis for 32, 44.1, 48kHz sampling
' g. b& o( n  b3 i2 y' U9 zSoft Mute
; Y6 @' I0 J% QDigital Attenuator (Linear 256 steps)
* F( `  |0 j& Z7 J# {) wTHD+N: -103dB
. ^& N; Y$ g! Y" c+ c- V0 @DR, S/N: 120dB
: W  i5 A' ^1 t" c% HI/F Format: 24/32bit MSB justified, 16/20/24/32bit LSB justified, I2S, DSD
Master Clock: Normal Speed: 256fs, 384fs, 512fs, 768fs or 1152fs
- y1 a1 D% X9 g: r1 H/ m) }: tDouble Speed: 128fs, 192fs, 256fs or 384fs
6 I' m  i* v* H2 X5 f; P# C! P& mQuad Speed: 128fs or 192fs
DSD: 512fs or 768fs
Power Supply: 4.75 ~ 5.25V
3 D5 |  e, P; _$ gTTL Level Digital I/F
( U; m" E. {% BPackage: 44pin LQFP
2 h, x' u% e1 |( K9 `/ \Evaluation Board: AKD4397

$ l3 k9 P! C( I' r& [The AK4397 is a high performance premium 32bit DAC for the 192kHz sampling mode of DVD-Audio including a 32bit digital filter. Using AKM's multi bit architecture for its modulator the AK4397 delivers a wide dynamic range while preserving linearity for improved THD+N performance. The AK4397 has full differential SCF outputs, which remove the need for AC coupling capacitors and increase performance for systems with excessive clock jitter. The AK4397 accepts 192kHz PCM data and 1-bit DSD data, ideal for a wide range of applications including DVD-Audio and SACD. The AK4397 has a functional compatibility with the AK4393/4/5 and lower power dissipation.