Patents by Inventor Sharmistha Sarkar Das

Sharmistha Sarkar Das 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).

  • System and method for minimizing overrun and underrun errors in packetized voice transmission
    Patent number: 7130793
    Abstract: When it is determined that a sample queue exceeds a first predefined level, samples being received from a IP switched network are modified such that samples are removed within the voiced region of the samples by removing whole pitch periods of samples. If the sample queue is below a second predefined number, additional samples are placed into the queue by analyzing voiced samples from the IP switched network and generating additional pitch periods of samples.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: October 31, 2006
    Assignee: Avaya Technology Corp.
    Inventors: Norman C. Chan, Sharmistha Sarkar Das
  • Apparatus and method for determining a minimal time bound for performing tone detection
    Patent number: 7054435
    Abstract: Performing tone detection for an amount of time that is calculated from the tones that the detector is designed to detect.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: May 30, 2006
    Assignee: Avaya Technology Corp.
    Inventors: Sharmistha Sarkar Das, Manish Marwah
  • Accent-based matching of a communicant with a call-center agent
    Patent number: 6847714
    Abstract: The accent of a party to a call is determined from a speech sample of the party and the call is sent for servicing to a call-center agent who has skill in the determined accent, and preferably to an agent who speaks both the determined language and the language of the accent.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: January 25, 2005
    Assignee: Avaya Technology Corp.
    Inventors: Sharmistha Sarkar Das, Kenneth R. Hackbarth, Kenneth B. Jensen, Joylee E. Kohler, Valentine C. Matula, Richard A. Windhausen
  • Apparatus and method for unified tone detection
    Patent number: 6748059
    Abstract: Performing tone detection by (1) creating a search engine for every period of all possible tones, (2) applying the search engines on one period of the unknown tone, (3) eliminating the search engines that did not match the period of the unknown tone, (4) reapplying the remaining search engines, and (5) repeating (3) and (4) until the unknown tone can be identified as one of the possible tones based on the remaining search engines.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: June 8, 2004
    Assignee: Avaya Technology Corp.
    Inventors: Sharmistha Sarkar Das, Manish Marwah
  • Accent-based matching of a communicant with a call-center agent
    Publication number: 20040096050
    Abstract: The accent of a party to a call is determined and the call is sent for servicing to a call-center agent who has skill in the determined accent, and preferably to an agent who speaks both the determined language and the language of the accent.
    Type: Application
    Filed: November 19, 2002
    Publication date: May 20, 2004
    Inventors: Sharmistha Sarkar Das, Kenneth R. Hackbarth, Kenneth B. Jensen, Joylee E. Kohler, Valentine C. Matula, Richard A. Windhausen
  • Arrangement for real-time automatic recognition of accented speech
    Publication number: 20040073425
    Abstract: An automatic speech recognition (ASR) apparatus (100) has a database (108) of a plurality of clusters (110) of speech-recognition data each corresponding to a different accent and containing words and phonemes spoken with the corresponding accent, an accent identifier (104) that identifies the accent of incoming speech signals, and a speech recognizer that effects ASR of the speech signals by using the cluster that corresponds to the identified accent.
    Type: Application
    Filed: October 11, 2002
    Publication date: April 15, 2004
    Inventors: Sharmistha Sarkar Das, Richard A. Windhausen
  • Apparatus and method for determining a minimal time bound for performing tone detection
    Publication number: 20030190038
    Abstract: Performing tone detection for an amount of time that is calculated from the tones that the detector is designed to detect.
    Type: Application
    Filed: April 5, 2002
    Publication date: October 9, 2003
    Inventors: Sharmistha Sarkar Das, Manish Marwah
  • Call classification by automatic recognition of speech
    Publication number: 20030088403
    Abstract: Classifying a call to a called destination endpoint by a call classifier. The call classifier is responsive to information received from the called destination endpoint to perform the call classification.
    Type: Application
    Filed: October 23, 2001
    Publication date: May 8, 2003
    Inventors: Norman C. Chan, Sharmistha Sarkar Das, Douglas A. Spencer, Danny M. Wages
  • Call classifier using automatic speech recognition to separately process speech and tones
    Publication number: 20030086541
    Abstract: Classifying a call to a called destination endpoint by a call classifier. The call classifier is responsive to information received from the called destination endpoint to perform the call classification.
    Type: Application
    Filed: October 23, 2001
    Publication date: May 8, 2003
    Inventors: Michael Kenneth Brown, Norman C. Chan, Sharmistha Sarkar Das, David Joseph Skiba, Danny M. Wages
  • Unified call classifier for processing speech and tones as a single information stream
    Publication number: 20030083875
    Abstract: Classifying a call to a called destination endpoint by a call classifier. The call classifier is responsive to information received from the called destination endpoint to perform the call classification.
    Type: Application
    Filed: October 23, 2001
    Publication date: May 1, 2003
    Inventors: Micheal Kenneth Brown, Norman C. Chan, Sharmistha Sarkar Das, David J. Skiba, Danny M. Wages
  • Apparatus and method for unified tone detection
    Publication number: 20030076943
    Abstract: Performing tone detection by (1) creating a search engine for every period of all possible tones, (2) applying the search engines on one period of the unknown tone, (3) eliminating the search engines that did not match the period of the unknown tone, (4) reapplying the remaining search engines, and (5) repeating (3) and (4) until the unknown tone can be identified as one of the possible tones based on the remaining search engines.
    Type: Application
    Filed: April 5, 2002
    Publication date: April 24, 2003
    Inventors: Sharmistha Sarkar Das, Manish Marwah