Resources Contact Us Home
Echo canceler

Image Number 6 for United States Patent #8130941.

An echo canceler 10 generates an echo elimination signal by filtering through adaptive filters 101 and 102 reference signals input from sound sources causing echoes. It includes a sound source number detecting unit 103 for detecting the number of the sound sources causing echoes from the reference signals, and a control unit 105 for making the number of taps of the adaptive filters 101 and 102 variable in accordance with the number of the sound sources detected by the sound source number detecting unit 103.

  Recently Added Patents
Method and device for determining processed image data about a surround field of a vehicle
Wireless updating of hearing devices
Profile and template based dynamic portable user workflow
Control method and allocation structure for flash memory device
Biomarkers of gastric cancer and use thereof
Wireless communications system, wireless communications apparatus, wireless communications method and computer program for wireless communication
Device and method incorporating an improved text input mechanism
  Randomly Featured Patents
Vessel having propeller arranged on vertical hull center plane
Fiber trough snaps
Method and computer program for evaluating mutual fund portfolios
Antenna set, portable wireless device, and use of a conductive element for tuning the ground-plane of the antenna set
Gaming machine
Polyolefinic copolymer additives for lubricants and fuels
Protocols for connecting intelligent service modules in a storage area network
Optical device and optical module provided with optical device
Side element of a shoe upper
Dry piston coal feeder