Resources Contact Us Home
Inter-channel communication in a multi-channel digital hearing instrument

Image Number 3 for United States Patent #8121323.

A multi-channel digital hearing instrument is provided that includes a microphone, an analog-to-digital (A/D) converter, a sound processor, a digital-to-analog (D/A) converter and a speaker. The microphone receives an acoustical signal and generates an analog audio signal. The A/D converter converts the analog audio signal into a digital audio signal. The sound processor includes channel processing circuitry that filters the digital audio signal into a plurality of frequency band-limited audio signals and that provides an automatic gain control function that permits quieter sounds to be amplified at a higher gain than louder sounds and may be configured to the dynamic hearing range of a particular hearing instrument user. The D/A converter converts the output from the sound processor into an analog audio output signal. The speaker converts the analog audio output signal into an acoustical output signal that is directed into the ear canal of the hearing instrument user.

  Recently Added Patents
Simplified algorithm for abnormal situation prevention in load following applications including plugged line diagnostics in a dynamic process
Biodegradable aliphatic-aromatic copolyester for use in nonwoven webs
Method and apparatus for allocating and obtaining IP address
Three-dimensional shape data processing apparatus and three-dimensional shape data processing method
Optical article including an antireflecting coating having antifog properties and process for making same
Post-processing device and image forming system
Touch screen guitar
  Randomly Featured Patents
Solid-state image pickup device
Bow making apparatus
Conversion method for a hidden storage/utility system
Portable device and method for accessing data key actuated devices
Method and apparatus for improving efficiency in combustion engines
Hydraulic control apparatus for hydraulically-operated power transmitting system having continuously variable transmission
Electrophoretic media and processes for the production thereof
Two-step cardiomyoplasty with ventricular reduction
Work hold-down improvements
Shaving system and method