Method and apparatus for processing microphone audio signals

#1. Field of the Invention

#The invention relates to a method and apparatus for processing an audio signal, more particularly to a method and apparatus for processing a microphone audio signal.

#2. Description of the Related Art

#Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiment with reference to the accompanying drawings, of which:

#FIG. 1 is a schematic circuit block diagram illustrating a conventional apparatus for processing a microphone audio signal;

#FIG. 2 is a schematic circuit block diagram illustrating the preferred embodiment of an apparatus for processing a microphone audio signal according to the present invention; and

#Referring to FIG. 2, the preferred embodiment of an apparatus 6 for processing a microphone audio signal according to the present invention is shown to include an analog-to-digital converter 61, a memory 63, a processor 64, a combiner 66, and a digital-to-analog converter 67.

#The analog-to-digital converter 61, which is an integrated circuit that is adapted to be coupled electrically to a microphone 4, converts the microphone audio signal into an initial digital signal at a first sampling frequency, such as 48000 Hz.

#The memory 63 is coupled electrically to the analog-to-digital converter 61.