demo victor 2

Download Demo victor 2

Post on 20-Jan-2015

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  • 1. Victor Management Ltd. Acoustic Noise Suppression

2.

  • We are a start-up technology company
  • The Hong Kong Poly University is our technology cooperation partner

About us 3.

  • Noise exists any where there is communication
  • Therefore Noise suppression is a critical issue for communication system

Why noise suppression? 4. Primary noise suppression simulation results (white noise) Before After NS High level noise Low level noise *Double click the mouse to listen the performance 5. Primary noise suppression simulation results Volvo Jet cockpit Before After NS 6. Comparison with overseas noise suppression performance In car noise environment After processing: reduce noise(25%) After processing reduce noise(80%) Oversea Victor Management Ltd Normal reduce High reduce 7. Why our two-microphone noise suppression?

  • Comparing with single microphone noise suppression there are two breakthroughs(reduce noise 2030 dB)
  • Work well under lower signal to noise ratio (High noise)
  • Has good performance even in babble (canteen) noise environment
  • Lower MIPS need

8. Comparing two-microphone with single microphone noise suppression

  • ARM platform simulation results (babble noise)
  • Before processing
  • 3G single microphone
  • Two-microphone

9. Comparing two-microphone with single microphone noise suppression

  • ARM platform simulation results(engine noise)
  • Before process
  • 3Gsingle microphone
  • Two-microphpone

10. Noise Suppression Applications

  • hearing enhancement (aid)
  • mobile phone
  • conference phone
  • blue-tooth communication
  • wireless communication
  • VoIP nphone
  • microphone-headset
  • car hands-free phone
  • robot voice interface, etc.

11. Audio noise suppression module (DSP real-time) for low signal to noise ratio (close to 0 dB)

  • Noise reduce>20/40 dB
  • Request input S/N ratio >0 dB
  • Sample rate8 ~ 16 k sample/s
  • Delay18 ms
  • feature can be modified for special customers
  • Applications of the module for high level telecom device, police and firemen telecom including: Webcam, Conference phone, Headset, Hearing aid, Mobile phone, VoIP phone, Bluetooth communication,Wireless communication, skype headphone, Digital audio recorder, Hands-free device, Audio surveillance, Skype TV, Internet TV, etc.
  • Product's size: 36 mm x 44 mm x 16 mm.

12. Audio noise suppression module (DSP real-time) for low signal to noise ratio

  • Noise reduce>20/40 dB
  • Request input S/N ratio >0 dB
  • Sample rate8 ~ 16 k sample/s
  • Delay18 ms

10 L_IN IN (analog) Line In (Left) 9 R_IN IN (analog) Line In (Right) 8 AGND AGND Analog Ground 7 L_OUT OUT(analog) Line out (Left) 6 R_OUT OUT(analog) Line out (Right) 5 MIC_IN IN (analog) Micphone Input 4 AGND AGND Analog ground 3 RSV3 TBD Reserved signal3 for later use 2 RSV2 TBD Reserved signal2 for later use 1 DGND DGND Digital ground Pin No. Signal Direction Description 13. Other available technologies

  • Audio codec (AAC-LC, MP3, AC3)
  • Speech codec
  • Voice recognition
  • Acoustic echo cancellation
  • Speech low bit rate codec
  • Microphone array, etc.

14. Thank You! Tel.:(852) 34062935or68064216 email :[email_address]