Earphone amplifier with USB soundcard and hub

A technology of headphone amplifier and hub, which is applied in the direction of earpiece/headphone accessories, etc., can solve the problems of general effect, low volume, poor effect, etc., and achieve the effect of convenient connection, reasonable design and simple structure

Inactive Publication Date: 2007-05-23
朱庆平
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are some headphone amplifier products on the market, which are powered by an independent AC power supply. Generally, a CD player is used as the sound source, and professional-grade headphones are connected to listen to it, which can achieve immersive effects. These headphone amplifiers are expensive and are aimed at audiophiles. Professional grade headphone amplifier products
At present, the vast majority of people who use computers, if they want to use earphones to enjoy music on the computer, they all plug the earphones directly into the audio output jack of the computer to listen. Because the audio output power of the AC97 sound card on the computer motherboard is very small, it belongs to Audio signal li

Method used

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  • Earphone amplifier with USB soundcard and hub
  • Earphone amplifier with USB soundcard and hub

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Embodiment Construction

[0014] In Fig. 1, the audio power amplifying circuit (1) is connected with the output end of the USB sound card circuit (9), the audio signal after the amplification is output by the output jack (3), and the audio power amplifying circuit (1) is generally controlled by the volume circuit, tone control, frequency equalization circuit and power amplifier circuit, the volume and high and low pitch can be adjusted as required, the ground wire and power input terminal of the audio power amplifier circuit (1) and the ground wire on the wire of the USB plug (4), + 5V is connected, after the USB plug (4) is inserted into the USB socket on the computer, the power supply is switched on, and the audio power amplifier circuit (1) starts to work; the other end of the USB plug (4) lead is connected with a USB hub (7). The USB hub (7) is connected with a spare 5V power supply socket (5), and the USB socket (8) on the USB hub (7) generally can be around 4, designed according to needs, more or ...

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PUM

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Abstract

The invention relates to an earphone loudspeaker with USB sound card and collecting tray, used in computer, wherein it is formed by voice power amplifier, USB collecting tray, USB sound card circuit, USB plug line, USB plug, power output earphone plug, and frame; USB plug is connected to the USB plug of computer; when the USB plug is connected, the computer USB plug can transmit data and power, to connect the anode and ground line of amplifier to computer, to be powered, to confirm normal operation; and the data line can feed digit signal from USB plug to the sound card to be decoded to obtain high-quality voice, to be amplified by earphone amplifier.

Description

technical field [0001] The invention relates to an earphone amplifier, in particular to an earphone amplifier with a USB sound card and a hub. Background technique [0002] At present, there are some headphone amplifier products on the market, which are powered by an independent AC power supply. Generally, a CD player is used as the sound source, and professional-grade headphones are connected to listen to it, which can achieve immersive effects. These headphone amplifiers are expensive and are aimed at audiophiles. Professional grade headphone amplifier products. At present, the vast majority of people who use computers, if they want to use earphones to enjoy music on the computer, they all plug the earphones directly into the audio output jack of the computer to listen. Because the audio output power of the AC97 sound card on the computer motherboard is very small, it belongs to Audio signal line output, plugging in ordinary earphones can only be regarded as listening to ...

Claims

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Application Information

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IPC IPC(8): H04R1/10
Inventor 朱庆平
Owner 朱庆平
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