The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 2010
Filed:
Nov. 22, 2006
Kuan-hong Hsieh, Guangdong, CN;
Xiao-guang LI, Guangdong, CN;
Wen-chuan Lian, Guangdong, CN;
Wen-sheng Tsai, Guangdong, CN;
Bing LI, Guangdong, CN;
Kuan-Hong Hsieh, Guangdong, CN;
Xiao-Guang Li, Guangdong, CN;
Wen-Chuan Lian, Guangdong, CN;
Wen-Sheng Tsai, Guangdong, CN;
Bing Li, Guangdong, CN;
Hong Fu Jin Precision Industry (Shen Zhen) Co., Ltd., Longhua Town, Bao'an District, Shenzhen, Guangdong Province, unknown;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
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.