Patents Examined by Carlos R. Villamar
  • Patent number: 5524172
    Abstract: A process of speech synthesis by the domain overlap-addition of elements stored in a dictionary as waveforms, comprises supplying a sequence of phoneme codes and respective prosodic information, and, for each phoneme, analyzing and synthesizing each phoneme, and then concatenating the synthesized phonemes. For each phoneme, two diphones are selected among the stored diphones and the presence of voicing is determined. For voiced phonemes, the respective waveforms of the two diphones constituting the phoneme are filtered by a window which is centered on a point of the selected waveform representative of the beginning of a pulse response of vocal cords to excitation thereof. The window has a width substantially equal to twice the greater of the original fundamental period or the fundamental synthesis period and has an amplitude progressively decreasing from the center of the window.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: June 4, 1996
    Assignee: Represented By The Ministry Of Posts Telecommunications and Space Centre National d'Etudes des Telecommunicationss
    Inventor: Christian Hamon
  • Patent number: 5518401
    Abstract: Non-pyrotechnic cues are used with an area weapons effects system. These cues include sound devices, flashing lights and smoke deposition devices. A processor detects the required type of display from an input message and displays an appropriate sound to correspond to the type of weapon used. In addition, visual displays are coordinated with the audio display to provide simulated explosions with appropriate sounds ("bangs") and lights ("flashing lights") and smoke.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: May 21, 1996
    Assignee: Motorola, Inc.
    Inventors: Mark R. FitzGerald, Bruce E. Geren, Edward P. Katarski
  • Patent number: 5509104
    Abstract: Speaker independent recognition of small vocabularies, spoken over the long distance telephone network, is achieved using two types of models, one type for defined vocabulary words (e.g., collect, calling-card, person, third-number and operator), and one type for extraneous input which ranges from non-speech sounds to groups of non-vocabulary words (e.g. `I want to make a collect call please`). For this type of key word spotting, modifications are made to a connected word speech recognition algorithm based on state-transitional (hidden Markov) models which allow it to recognize words from a pre-defined vocabulary list spoken in an unconstrained fashion. Statistical models of both the actual vocabulary words and the extraneous speech and background noises are created. A syntax-driven connected word recognition system is then used to find the best sequence of extraneous input and vocabulary word models for matching the actual input speech.
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: April 16, 1996
    Assignee: AT&T Corp.
    Inventors: Chin H. Lee, Lawrence R. Rabiner, Jay G. Wilpon