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Analog output device of digital audio system

A technology of digital audio and analog output, applied in low-frequency amplifiers, transducer circuits, sensors, etc., can solve problems such as unreal sound quality, and achieve the effect of unreal sound quality

Inactive Publication Date: 2006-07-05
LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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Problems solved by technology

[0009] As mentioned above, the audio signal output gain device in the all-digital audio system provided by the present invention adopts a vacuum tube line structure with analog signal gain characteristics, so that the audio signal can be output through the vacuum tube to realize the output of analog audio, thereby solving the problem of all The problem of unreal sound quality in the digital audio system creates a more natural sound quality output effect, making the audio system develop in a more high-end direction, and at the same time more satisfying the needs of users

Method used

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  • Analog output device of digital audio system

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Embodiment Construction

[0014] A first embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0015] figure 2 According to the first embodiment of the present invention, the analog output device of the digital audio system constitutes a schematic diagram.

[0016] As shown in the figure, the first embodiment of the present invention consists of a PWM regulator 20 , a gate driver 22 , a push-pull output gain unit 24 , an output transformer 26 , a low-pass filter 28 and a speaker 30 .

[0017] The above-mentioned push-pull output gain part 24 plays the role of carrying out power gain on the above-mentioned pulse width modulated audio signal, so that the above-mentioned pulse width modulated audio signal can be output. For this reason, the above-mentioned push-pull output gain part 24 adopts two vacuum tubes 24a, 24b in a push-pull manner, and these two vacuum tubes respectively gain signals with opposite phases.

[0018] The two signals t...

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Abstract

Using vacuum tube, the analog output device of digital audio system realizes gain output of audio and analog output of digital audio signal. The output device includes following parts: digital signal processing part for digital processing audio signal; gate drive for driving voltage to pass through vacuum tube in order to realize gain output of digital audio signal; gain part with vacuum tube for electrical analog quantities; the vacuum tube converts digital audio signal to analog signal with gain. Through loudspeaker, the audio output part outputs the gained analog audio signal.

Description

【Technical field】 [0001] The present invention relates to an analog output device of a digital audio system, in particular to an analog output device that realizes an analog output through the provided output device in an all-digital audio system so as to achieve an effect more faithful to the original sound . 【Background technique】 [0002] Generally speaking, audio systems can be broadly divided into two types, namely, fully analog audio systems and fully digital audio systems. Compared with the all-digital audio system, the all-analog audio system has the advantage that the sound quality output by the all-analog audio system is closer to the natural timbre and is more real, but its disadvantage is that the price is correspondingly higher, and because the analog second audio system The characteristics of the line itself determine that the volume of this system is also relatively large. [0003] On the contrary, while the all-digital audio system can guarantee better soun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/181H04R3/00
Inventor 权五奭
Owner LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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