Audio Accessories
Far-Field Speech Enhancement

Applications  / Audio Accessories  / Far-Field Speech Enhancement

 

 
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Introduction

 
“Always-on” voice activated and controlled devices or appliances can have difficulties “hearing” voice prompts and commands. This “hearing”, also known as far-field voice pick-up, is dependent on several variables such as signal to noise ratio, room acoustics, device placement location and respective acoustics, microphone performance, and user’s voice profile. Alango’s Voice Enhancement Package (VEP) dramatically improves the devices far-field voice pick-up whether in the car talking to Siri or at home talking to Google (or vice versa, of course).
 

 

Block Diagram

  
 

 

 

 

Definitions

  
 
         
  N-Mic Beamformer  

A microphone array utilizing beamforming preserves the speech from ambient noise and detects the direction of the voice commands.

  
  Acoustic Echo Canceller (AEC)  

Eliminates acoustic echo from the loudspeaker to the microphones. Both mono and stereo acoustic echo cancellers are available.

  
  Noise Suppressor (NS)   Detects and attenuates stationary and transient noises.  
         

 

 

 

Benefits

 

Flexible implementation of optimal voice pick up for voice trigger recognition, local (embedded ASR) or transmission to cloud for different environments and number of microphones.

 

 

Video

 
 
Voice Controlled MP3 Player DEMO

 

 

More for Mobile Audio Accessories

  
 

VOICE ENHANCEMENT

  

AUDIO ENHANCEMENT
 
     

SHOWROOM

    
   

 

 
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