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Device for eliminating digital audio apparatus noise

A technology for digital audio and audio equipment, applied in low-frequency amplifiers, transducer circuits, sensors, etc., can solve the problems of unbalanced power supply and unstable power supply balance, and achieve the effect of eliminating noise.

Inactive Publication Date: 2006-05-03
NANJING LG TONGCHUANG COLOR DISPLAYS SYST CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0012] Therefore, at the moment when the output power (Vcc) of the above-mentioned left / right speakers 31, 32 and the drive power (Vcc) of the above-mentioned audio equipment power amplifier 20 drop simultaneously, there is an unstable power balance inside the above-mentioned audio equipment power amplifier 20. The problem
[0013] Simultaneously, because the power supply is unbalanced, the left / right side speaker 31,32 output power (Vcc) in the above-mentioned audio equipment power amplifier 20 is just in the state of abnormal operation, thus can cause another problem of popping (POP) noise

Method used

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  • Device for eliminating digital audio apparatus noise
  • Device for eliminating digital audio apparatus noise
  • Device for eliminating digital audio apparatus noise

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Embodiment Construction

[0028] The apparatus for eliminating pop noise of digital audio equipment according to the present invention will be described in more detail below with reference to the accompanying drawings.

[0029] image 3 is a component diagram showing a device for eliminating pop noise of a digital audio device according to the present invention. Figure 4 It is a waveform diagram showing the power variation of the power amplifier of the digital audio equipment according to the present invention when the power is turned off.

[0030] Such as image 3 As shown, the device for eliminating pop noise of digital audio equipment according to the present invention is composed of the following parts: an audio equipment power amplifier 20 that amplifies the input audio signal and outputs it; The audio signal is respectively output from the speaker 30 on the left / right side; the input common power supply is received, and the power supply for driving the audio equipment power amplifier 20 and pr...

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Abstract

The invention relates to a dispelling digital audio frequency device POP noise device which can make the power stable and dispel the noise when the power closed. The invention has left / right loudspeaker. It comprises: an audio frequency device power amplifier which amplifies and outputs the inputted audio frequency signal, a power input device which receives the common power and provides the driving power to the audio frequency device power amplifier and the audio frequency output power to the left / right loudspeaker; if it inputs the power closed order, it dispels the POP noise of the left / right loudspeaker.

Description

technical field [0001] The present invention relates to digital audio equipment amplifiers, and more particularly, the present invention relates to a pop noise canceling device for digital audio equipment amplifiers for eliminating explosive pop noises generated in loudspeakers when the digital audio equipment amplifiers are powered off. Background technique [0002] Generally speaking, amplifiers are installed in all machines that provide us with sound. Simply put, an amplifier is a device that amplifies the input signal so that we can hear the sound. It is the abbreviation of the amplifier (amplifier). In our country's words, it can also be called For 'amplifier'. [0003] Because we generally call it an amplifier, it is easy to think of a complicated machine with many operation buttons installed on the front part, but it is not like that. From small Walkmans to advanced audio equipment, all have amplifiers. [0004] The basic function of the amplifier is to amplify the...

Claims

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Application Information

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IPC IPC(8): H03F1/30H03F3/181H04R3/00
Inventor 李种业
Owner NANJING LG TONGCHUANG COLOR DISPLAYS SYST CO LTD
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