Clark School Home UMD

ISR News Story

Carlos Berenstein awarded US Patent 7,424,463

ISR Professor Carlos Berenstein (Math/ISR) is one of five inventors who have been awarded US Patent 7,424,463 for "Denoising Mechanism for Speech Signals using Embedded Thresholds and an Analysis Dictionary."

Along with Berenstein, the inventors include ISR alumni David Walnut and Domenico Napoletani, along with Timothy Sauer and Daniele Struppa.

The invention is a denoising mechanism for signal processing that uses chosen signal classes and selected analysis dictionaries. The chosen signal class includes a collection of signals. The analysis dictionaries describe signals. The embedding threshold value is initially determined for a training set of signals in the chosen signal class. The update signal is initialized with a signal corrupted by noise. The estimate calculated by: computing coefficients for the updated signal using the analysis dictionaries; computing an embedding index for each of the path(s); extracting a coefficient subset from coefficients for the path(s) whose embedding index exceeds an embedding threshold; adding a coefficient subset to a coefficient collection; generating a partial estimate using the coefficient collection; creating an attenuated partial estimate by attenuating the partial estimate by an attenuation factor; updating the updated signal by subtracting the attenuated partial estimate from the updated signal; and adding the attenuated partial estimate to the estimate.

You can view ISR patents at any time on our patents page.

September 12, 2008

Prev   Next



Current Headlines

Alireza Khaligh promoted to full professor

Alumna Aisha Al-Obaid to join Kuwait University faculty

Clark School Team to Compete in NASA's RASC-AL Competition

Alum Ahmed Arafa to join UNC Charlotte faculty this fall

Ayan Mallik to join Arizona State University faculty

Sennur Ulukus is plenary speaker at Canadian Workshop on Information Theory

Jiang, Marakby, Vaswani, and Wu named 2019 ECE Distinguished Alumni

Mallik and Ferlic Win Dean's Doctoral and Master's Student Research Awards

UMD Energy Start-Up receives $8M investment

Manocha Named to 2019 ACM SIGGRAPH Academy

News Resources

Return to Newsroom

Search News

Archived News

Events Resources

Events Calendar