Audio processing system
A technology of audio processing and audio processor, which is applied in the field of audio processing circuit with a USB controller, can solve the problem of consuming system circuit volume and achieve the effect of reducing volume
Inactive Publication Date: 2010-05-26
PRINCETON TECH CORP
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Problems solved by technology
[0002] Generally, when the sound or music data of the current personal computer (PC) is to be played by an external audio processing system, the USB control chip must be used to control the USB controller to transfer the sound or music data inside the personal computer (PC) through the USB connection port. The data is transmitted to an external audio processing system, and then the audio processing control chip is used to control the audio processing system to perform audio processing on the sound or music data transmitted by the computer, and finally the speaker is used to play it, so that the playback of the audio stored in the personal computer can be completed. The action of sound or music data, but this method must use two different types of control chips, such as USB control chip and audio processing control chip, which consumes the volume of the system circuit. Therefore, how to save the volume of the system circuit to complete the use of external If the audio processing system plays the USB sound or music data of the personal computer, it becomes an important topic to improve the audio processing system.
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[0024] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail with the accompanying drawings.
[0025] see figure 1 , figure 1 It is a schematic diagram of the audio processing system of the present invention. Such as figure 1 As shown, the audio processing system 10 of the present invention includes an audio processor 12 and an audio amplifier 14 . The audio processor 12 is used for receiving a data signal and processing it to generate a processed signal. The audio amplifier 14 is coupled to the audio processor 12 for receiving and amplifying the processed signal to generate an amplified signal. The audio processing system 10 further includes at least one speaker 16 coupled to the audio amplifier 14 for receiving and outputting the amplified signal.
[0026] see figure 1 and figure 2 , figure 2 It is a schematic diagram of the audio processor o...
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The invention provides an audio processing system, comprising an audio processor and an audio amplifier. The audio processor is used for receiving and processing a data signal, so as to generate a processing signal; the audio comprises at least a gain control circuit and at least an operational amplifier. The at least one gain control circuit is used for generating a gain signal according to a volume control signal, a reference signal and a feedback signal. The at least one operational amplifier is coupled with the at least one gain control circuit to carry out the gain of the data signal withthe gain signal, so as to generate the processing signal. The audio amplifier is coupled with the audio processor to receive and amplify the processing signal, so as to generate the amplification signal. Two main circuits: a USB controller and the audio amplifier can be combined and integrated into a whole by the audio processing system of the invention, thus effectively reducing the volume required by the circuit.
Description
technical field [0001] The present invention relates to an audio processing circuit, especially an audio processing circuit with a USB controller. Background technique [0002] Generally, when the sound or music data of the current personal computer (PC) is to be played by an external audio processing system, the USB control chip must be used to control the USB controller to transfer the sound or music data inside the personal computer (PC) through the USB connection port. The data is transmitted to an external audio processing system, and then the audio processing control chip is used to control the audio processing system to perform audio processing on the sound or music data transmitted by the computer, and finally the speaker is used to play it, so that the playback of the audio stored in the personal computer can be completed. The action of sound or music data, but this method must use two different types of control chips, such as USB control chip and audio processing c...
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IPC IPC(8): G11C7/16
Inventor 施政铭陈正璘
Owner PRINCETON TECH CORP