Patent ID: 8422700

Claim:
An audio signal adjusting method applied for an electronic device receiving at least one input audio signal, and said audio signal adjusting method comprising steps of: utilizing an audio signal detector for detecting an external acoustic signal outside the electronic device and transmitting the detected external acoustic signal to an audio processor; utilizing the audio processor for generating an output audio signal according to an audio signal adjusting parameter and the at least one input audio signal, wherein the output audio signal has an output audio signal level, and the audio processor transmits the output audio signal level and the external acoustic signal to a microprocessor; utilizing the microprocessor to control an evaluating and comparing logic unit to determine an environmental noise level according to the external acoustic signal, the at least one input audio signal, and the audio signal adjusting parameter, in which the evaluating and comparing logic unit accesses the audio signal adjusting parameter that is pre-stored in a data storing region, and thereby the microprocessor transmitting the environmental noise level back to the audio processor; utilizing the audio processor for calculating a ratio between the environmental noise level and the output audio signal level to correspondingly form a measuring value; utilizing the microprocessor for comparing the measuring value with a predetermined threshold; and utilizing the microprocessor for determining whether or not to adjust the audio signal adjusting parameter according to the comparison result of the measuring value and the predetermined threshold, wherein if the comparison result is incorrect, the microprocessor adjusts the audio signal adjusting parameter and then transmits the adjusted audio signal adjusting parameter to the audio processor, and the audio processor generates a corresponding output audio signal according to the adjusted audio signal adjusting parameter and the at least one input audio signal.