Hon Hai Precision Industry Co., Ltd.

Hong-fu Jin Precision Industry (shenzhen) Co., Ltd.

Wen-Sheng Tsai

Xiao-Guang Li

Kuan-hong Hsieh

Wen-Chuan Lian

Bing Li

Hua-Dong Cheng

Bo Li

Jian Sun

Yao Zhao

Rong-Hwa Ding

An audio test apparatus, and an exemplary audio test method that includes: processing an audio file through two independent channels; outputting no signals from a left channel and from a right channel in a first time period; receiving noise signals from the left and right channels; outputting single-frequency signals from the left channel only in a second time period; receiving the single-frequency signals from the left channel and crosstalk signals from the right channel; outputting multi-frequency signals from the left and right channels in a third time period; receiving the multi-frequency signals from the left and right channels; outputting single-frequency signals from the right channel only in a fourth time period; receiving the crosstalk signals from the left channel and the single-frequency signals from the right channel; and testing parameters according to the signals received during the four time periods.

Audio test apparatus and test method thereof

The present invention relates to an audio processing system with function of automatic gain control and method thereof. The method includes steps of: receiving a playing command to play an audio file; reading a genre type of the audio file from a tag of the audio file; reading a genre gain value of the genre type from a gain setting table stored in a storage unit; decoding the audio file and generating digital audio signals; converting the digital audio signals to analog audio signals; and signaling a gain amplifier to amplify the analog audio signals by the genre gain value, thereby sounds corresponding to the analog audio signals amplified is proper to a listener's hearing.

Audio processing system with function of automatic gain control and method thereof

The present invention provides an audio processing apparatus for automatically controlling gain. The audio processing apparatus includes an audio signal source and a sound reproduction device. The sound reproduction device attaches to the audio signal source, which includes a storage unit for storing a default gain value and a gain index table. The gain index table lists genre types with a genre gain value of each of the genre types. After receiving a play command signal, the audio signal source fetches an audio file to be played, reads a genre type of the audio file from a tag thereof, and processing the audio file to generate audio signals. The audio signal source further reads a genre gain value of the genre type from the gain index table, amplifies the audio signals by the genre gain value, and sends the amplified audio signals to the sound reproduction device to reproduce corresponding sounds.

Audio processing apparatus for automatic gain control

The present invention relates to method for managing gain value for each channel of a TV set, includes steps: signaling a tuner to receive broadcasting signals of the channel in response to a channel selection command; reading a predetermined gain value of the channel from a setting table; amplifying and outputting audio signals extracted from the broadcasting signals of the channel according to the predetermined gain value of the channel; signaling a gain control unit to adjust a current gain value to an adjusted gain value if receiving a gain adjustment command; amplifying the audio signals of the channel according to the adjusted gain value; calculating an integrated gain value according to the adjusted gain value and the predetermined gain value; and updating the predetermined gain value of the channel using the integrated gain value. The present invention also provides a corresponding TV set.

TV set and method for managing gain value for each channel

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.

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Guangdong, China

Wen-Sheng Tsai