枯痴 发表于色影无忌
Architecture
250 MHz 8-way multithreaded RISC processor
"ure software" SlimDSP™ architecture
Field-upgradeable Xilinx CPLD
64Mb high-speed RAM
16Mb program flash
Low-power design, all solid-state, fanless
8路CPU,这样解码输出,管理cache, 网络, 显示 等等功能可以分开去做,应该是对音质重要的保障。。。观察server端的网络流量,播放一首曲子时候,SB3先用3~4秒时间,占用较多网络带宽(5~10Mbps)传送数据, 然后维持在低带宽状态 (1Mbps)左右。。。缓存中的数据,可以在网络间断25秒左右内不间断播放。。。
枯痴 发表于色影无忌
Analog RCA outputs
High fidelity Burr-Brown™ 24-bit DAC
Two dedicated linear power regulators for DAC and line-out stages
Full 6.0Vpp line-level signals
Signal-to-noise ratio: over 100dB
Total harmonic distortion: less than -93.5dB (0.002%)
莫看SB3外接电源很寒酸,里面为DAC和运放部分专门设置了两路稳压。。。看他那小身板,肯定是放不下大电容了,不过三端块之类的东西估计少不了。。。其实三端稳压比滤波电容有效多了。。
枯痴 发表于色影无忌
为数字输出部分弄了个专用晶振,不能算是偷工减料了。。大家盛赞它数字输出好,看来也可以理解
要是能支持96khz就更好了,,不过44.1k对付我也足够。。。我记得我高音只能听到16~17khz, 这样 35khz的采样率就能打发我了 :)
Intrinsic jitter: less than 50ps (standard deviation) 这个指标,很少见到。。到底是数码时代的音响器材,本质数据要标明白。。。不知道典型的CD机这个数据是多少?
Digital S/PDIF outputs
Optical and coax digital connections
Dedicated high-precision crystal oscillators (no PLL, no resampling)
Standard IEC-958 (S/PDIF) encoding
Optical connector: TOSLINK 660nm
Coax connector: RCA, 500mVpp into 75 ohms
Sample rates: 44.1Khz, 48Khz
Audio format: linear PCM, 16 or 24 bits per sample
Intrinsic jitter: less than 50ps (standard deviation)
欢迎光临 耳机网-耳机大家坛 (http://www.erji.net/) | Powered by Discuz! X3.2 |