BELASIGNA R261: Advanced Noise Reduction Solution for Voice Capture Devices

Datasheet: BelaSigna® R261 Advanced Noise Reduction Solution for Voice Capture Devices
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Product Overview
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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' time 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.
Features   Benefits
  • Advanced two-microphone noise reduction algorithm
  • Advanced noise reduction: Effective against stationary and non-stationary background noise to improve voice clarity while preserving voice naturalness
  • Preserves voice naturalness
  • 360° voice pickup: Conference mode enables noise reduction up to 6 meters from voice capture device
  • Supports close-talk and far-talk
  • Simplified system integration: Complete System-on-Chip takes two microphone signals and plugs directly into a digital microphone interface (DMIC) or into a host chip's microphone inputs
  • Conference mode enables 360 degree voice pick-up
  • Customizable algorithm: Can be adjusted to a manufacturer's desired balance between noise reduction aggressiveness and natural voice quality
  • Configurable algorithm performance
  • Microphone flexibility: Adaptive nature of algorithm enables flexibility in microphone placement and eliminates production line tuning; compatible with a broad range of microphones
  • Ultra-low power consumption
  • Configurable system: PC-based application simplifies the configuration of system settings
  • Ultra-miniature form factor
  • Miniature size: Requires minimal PCB area. Easily integrates into end-application architectures
Applications   End Products
  • Noise Reduction Audio Processing
  • Mobile phones
  • Notebook computers
  • Tablet computers
  • Webcams
  • Any device that picks up voice
Technical Documentation & Design Resources
Software (2) Data Sheets (1)
Application Notes (1) Package Drawings (2)
Budgetary Price/Unit
Case Outline
BR261W26A101E1G Obsolete
Halide free
BELASIGNA R261 WLCSP-26 567CY NA Tape and Reel 2500  
BR261W30A101E1G Obsolete
Halide free
BELASIGNA R261 VFBGA-140 138AE NA Tape and Reel 2500  
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Case Outlines
567CY    138AE   
BELASIGNA R261: Advanced Noise Reduction Solution for Voice Capture Devices
BELASIGNA R261: Advanced Noise Reduction Solution for Voice Capture Devices
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