DSP音效处理 WIFI、蓝牙、光纤、同轴、5.1 Soundbar音响方案
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DSP音效处理 WIFI、蓝牙、光纤、同轴、5.1 Soundbar音响方案
杭州士兰微电子公司近期推出了一颗高集成度,专注于无线音乐、音频编解码、音效处理的SoC芯片SC6138A。该芯片集成了USB/SD/以太网控制器,具有低成本、高性能、高集成度的特点,可广泛应用于无线(WiFi和蓝牙)音箱,Soundbar和各种音效处理系统。
SC6138A采用了先进的双核架构,即采用32bit RISC作为主控,辅以APU(Audio Processing Unit)来完成音频编解码和音频后处理。其中主控采用精简指令架构,32位数据长度,16位指令长度,8级流水线,300MHz工作频率,支持MMU,支持linux系统。APU核工作频率为150MHz,采用模块级流水线,16x16/32x32乘法器和DSP指令,并拥有专用的硬件音频加速引擎。
该芯片集成了2.0 High Speed USB控制器(内置PHY), SD/MMC/SDIO控制器,100M以太网,高速UART,Audio ADC和DAC,5.1 I2S in/out和SPDIF in/out等音频接口,内置了RTC,A/D模块和UART/SPI Master/I2C/PWM接口,并采用先进的SMIC 0.11G工艺,100-PIN LQFP封装,叠封SDRAM,非常适合音乐播放、无线推送和音效处理等多方面的应用。
Hardware
?Dual-core structure: audio processing unit and high performance 32-bit RISC.
?Integrated high/full speed USB controller and SD/MMC/SDIO controller.
?Integrated 100M Ethernet controller.
?Integrated AES/RSA accelerate engine.
?Integrated 5.1 I2S in/out and SPDIF in/out interface.
?Integrated RTC, A/D and interface such as UART、spi master、I2C、PWM
?Integrated High-performance audio Codec:
u Programmable sampling frequency FS amongst 8/11.025/12/16/22.05/24/32/44.1/48/96 kHz
u DAC to stereo line output path @10kOhm:
lSNR: 95 dB A-Weighted
lTHD: -80 dB@FS -1dB
u Line input to ADC path:
lSNR: 85 dB A-Weighted
THD: -80 dB@FS -1dB
u PSRR:50 dB@1kHz
qSoftware
?Linux OS,SDK.
?Audio software CODEC:
?Decoding: Support WAV/MP3*/WMA*/AAC*/APE*/FLAC/AC3*/DTS*/ALAC*.
?Encoding: Support MP3*/ADPCM/WAV.
?Support DLNA*、Airplay* protocol.
?Support digital audio post processing
?Programmble BiQuads parameter EQ.
?Soft volume and soft mute.
?Dynamic range compressor.
?Virtual Surround, Loudness Control, Vocal processing.
?Microphone Echo,Echo Cancellation.
?Bass and Treble enhancement.
?Pitch and Speed Control.
?Up/Down Mixing.
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