Wisconsin Alumni Research Foundation

Medical Devices
Medical Devices
Spectral Enhancement of Acoustic Signals to Provide Improved Recognition of Speech
WARF: P98210US

Inventors: Keith Kluender, Rick Jenison

The Wisconsin Alumni Research Foundation (WARF) is seeking commercial partners interested in developing a method for enhancing an auditory signal to allow hearing-impaired individuals to extract speech information accurately.
Individuals with normal hearing are able to recover speech information even when spatial and temporal overlaps of adjacent speech activities occur. During signal amplification for the hearing-impaired, critical information for recovering speech information is lost, making it extremely difficult for hearing-impaired individuals to extract speech information accurately.
The Invention
UW-Madison researchers have developed a method for enhancing an auditory signal.  The process enhances spectral differences between sounds, minimizing loss of information during amplification of the auditory signal. This is accomplished by dividing the input auditory signal into a plurality of spectral channels, modifying these signals and then combining them to form an enhanced output auditory signal.
  • Makes sounds, particularly speech sounds, more distinguishable
Key Benefits
  • Can be incorporated into a hearing aid device or a speech recognition system
  • Several methods can be used to filter the signal into multiple bands, including a bank of gammatone filters and a large bank of filters called Quadrature Mirror Filters.
Additional Information
For More Information About the Inventors
For current licensing status, please contact Jeanine Burmania at [javascript protected email address] or 608-960-9846