Patent ID: 6078793
Filing Date: 2000-06-20
Classification: H01Q,H04B

Abstract:
A processing system that generates a voice output signal having high precision controlled gain from a voice input signal, comprising:a digital signal processor; andan instruction memory comprising program instructions, wherein the program instructions control the digital signal processor to:determine a setup gain from an average signal level of a voice message carried by the voice input signal and measured during a predetermined time at a start of the voice message,generate a slow gain signal from the voice message by controlling a gain applied to a signal level of the voice input signal using the setup gain as an initial gain and a first slow time constant to modify the gain, andgenerate the voice output signal having high precision controlled gain from the slow gain signal by controlling a signal level gain of the slow gain signal using at least one of a fast attack time constant and a slow release time constant, wherein the fast attack time constant is faster than the first slow time constant.