Patents Examined by David S. Hunter
  • Patent number: 5471527
    Abstract: A telecommunications network (120) is provided with adaptive gain control (AGC) of the voice signals in network (120). Network (120) includes an input (12) for receiving a voice signal, an output (14) for receiving the voice signal, and a coupling between input (12) and output (14) including at least one switch (124) or (126). Network (120) also includes voice enhancer (10) including power averager (18) for measuring and determining the average power of an input signal. Voice enhancer (10) also includes bass band equalizer (16) to attenuate a predetermined portion of the input signal to provide an equalized input signal. From the average power of the input signal is determined a scaling factor from a gain/attenuation look-up table (28). Voice enhancer (10) also includes output scaler (30) coupled to output (14), output scaler (30) scales the equalized input signal with the scaling factor and provides the scaled signal to output (14).
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: November 28, 1995
    Assignee: DSC Communications Corporation
    Inventors: Helena S. Ho, Michael K. Pratt, Pong C. Lim, Thomas T. Oshidari