Audio processing system and method for automatically adjusting volume
The present invention relates to an audio processing system and method for automatically adjusting volume. The method includes steps of: calculating a noise level as a reference noise level; periodically calculating a new noise level of a predetermined time period, and dividing the reference noise level by the new noise level to obtain a ratio; sampling digital audio signals generated by a decoding unit to obtain a plurality of amplitude values, periodically calculating an audio energy value of the predetermined time period; multiplying the audio energy value by the ratio to obtain a reference audio energy value; calculating a gain value according to the reference audio energy value and the default gain value; updating the default gain value with the gain value; and signaling the gain amplifier to amplify the analog audio signals received with the gain value, thereby protecting users' hearing.
Hon Hai Precision Industry Co., Ltd. Hong Fu Jin Precision Industry (Shen Zhen) Co., Ltd.
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H03G H04S
inventional inventional
Wen-Sheng Bing Kuan-Hong Wen-Chuan Xiao-Guang
Tsai Li Hsieh Lian Li