On Semi 公司的BelaSigna R261是完整的系統(tǒng)級芯片(SoC)解決方案,采用先進(jìn)的雙麥克風(fēng)噪聲消減算法方法來降低機(jī)械,平穩(wěn)以及非平穩(wěn)噪聲,能為膝上型電腦,手機(jī),網(wǎng)絡(luò)攝像機(jī),平板電腦及其它要求更高語音清晰度的語音捕獲應(yīng)用提供先進(jìn)的雙麥克風(fēng)的噪聲管理,兼容多種編解碼器,基帶芯片和麥克風(fēng),且無須校準(zhǔn),易于集成, 非常適用于多種嘈雜環(huán)境.本文介紹了BelaSigna R261主要特性,框圖,輸入和輸出級框圖,以及30球和26球WLCSP封裝應(yīng)用框圖.
BELASIGNA R261 is a complete system−on−chip (SoC) solution that provides advanced dual−microphone noise reduction in voice capture applications such as laptops, mobile phones, webcams, tablet computers and other applications that will benefit from improved voice clarity.
Featuring a novel approach to removing mechanical, stationary and non−stationary noise, the chip preserves voice naturalness for greater speech intelligibility even when the talker is further away or not optimally aligned with microphones providing unmatched freedom of movement for end−users. Designed to be compatible with a wide range of codecs, baseband chips and microphones without the need for calibration, BelaSigna R261 is easy to integrate, improving manufacturers’ speed to market.
Additional features include the ability to customize multiple voice capture modes and tune the algorithm to the unique needs of a manufacturer’s device. The chip includes a highly optimized DSP−based application controller with industry−leading energy efficiency and is packaged in two highly compact 5.3 mm2 WLCSPs to fit into even the most sized−constrained architectures and allow the use of the cheapest printed circuit board design technologies.
BelaSigna R261主要特性:
Advanced Two−Microphone Noise Reduction Algorithm
Preserves Voice Naturalness
Supports Close−Talk, Far−Talk and Custom Mode
Conference Mode enables 360 Degrees Voice Pick−up
Configurable Algorithm Performance
Ultra Low Power Consumption
Ultra Miniature Form Factor
Complete System−on−Chip (SoC)
Highly Flexible Clocking Architecture
Hardware Configuration Interfaces
Prototyping Tools
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant
BelaSigna R261典型應(yīng)用:
Notebook Computers
Mobile Phones
Tablet PCs
Webcams
Any Portable Audio Application with Voice Pick−up
圖1. BelaSigna R261方框圖:完整音頻處理系統(tǒng)
圖2. BelaSigna R261輸入級框圖
圖3. BelaSigna R261輸處級框圖
圖4. BelaSigna R261 30球WLCSP封裝應(yīng)用框圖
圖5. BelaSigna R261 26球WLCSP封裝應(yīng)用框圖
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