Patents by Inventor Vishu Ramamoorthy Viswanathan

Vishu Ramamoorthy Viswanathan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Adaptive Noise Cancellation
    Publication number: 20090012786
    Abstract: Speech-free noise estimation by cancellation of speech content from an audio input where the speech content is estimated by noise suppression. Adaptive noise cancellation with primary and noise-reference inputs and an adaptive noise cancellation filter from estimating primary noise from noise-reference input. Speech Suppressor (Noise Estimation) applied to noise-reference input provides speech-free noise estimates for noise cancellation in the primary input.
    Type: Application
    Filed: July 2, 2008
    Publication date: January 8, 2009
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Xianxian Zhang, Vishu Ramamoorthy Viswanathan, Takahiro Unno