Clear Voice Technology of noise cancellation for speech signals.

Description

Proprietary, original state-of-the-art algorithm which has been developed to automatically remove ambient noise from voice and other previously recorded or transmitted sound signals.

Applications

• Local and Long Distance telecommunications
• Answering machines and cordless phones
• Internet telephony and PC telephony
• Call service centers
• Hands-free speaker phones
• Mobile phones
• Car phones
• Networks
• Speech communication onboard of the aircraft
• Large scale IC manufacturing
• Voice recognition
• Hearing aids
• Voice logging systems
• Audio products
• Other applications: mobile and two-way radios and speech selective safety headsets, micro-cassette recorders and dictation devices, teleconferencing systems and personal computers for "sound hobbyists", home audio and stereo products, "smart" speech-activated consumer products, etc.
  

Features

ClearVoice dramatically improves the communication quality in telephone, satellite and radio channels, and can be used to increase the accuracy of speech recognition systems. It is effective against a wide variety of noise sources (air conditioners, desk or computer fans, background babble, office equipment, industrial and vehicle engines, street traffic, wind, music, power supply hum, communication channels, etc.)

• Self-adjusts to background noise
• Continuous and adaptive removal of background noise from speech
• Improves voice quality and intelligibility
• Decreases subscribers" listening fatigue
• Reduces time of communication due to the elimination of double-checking
• Improves voice compression system quality
• Increases speech recognition success in automatic speech recognition systems
• Uses only single input (e.g., hands-free car microphone or speakerphones microphone)
• Automatically separates useful signals (like speech) from slow background varying noise
• Designed as a pre-processing subroutine call
• Programmable noise reduction parameters
• Up to 30 dB signal-to-noise improvement
• Single tone reduction > 50 dB
• White noise reduction > 20 dB
• Selectable frequency bandwidth up to 1/2 audio sampling rate
• Hiss and rumble additional filters, frequency response forming filter
• Optional extensions for canceling specific interference

Clear Voice algorithms are available as SDK, DSP, ActiveX or PC software. We can grant the right to manufacture, use and sell products incorporating Clear Voice algorithms.Clear Voice may be licensed for use in software, hardware or integrated circuits (ICs) for communication applications. The form of the transfer may include software for PC or DSP, DLL, source code, hardware, devices, etc.