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Connecting line of USB interface with amplifier of microphone

A microphone amplifier, USB interface technology, applied in the direction of sensors, transducer circuits, sensor components, etc., can solve the problems of inconvenient cost, reduced system reliability, increased operation and use troubles, etc., to achieve low cost, easy to use convenient effect

Inactive Publication Date: 2007-05-16
王祥贵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is inconvenient for users to carry, and the cost is also greatly increased, and two more links will inevitably reduce the reliability of the system; at the same time, it will increase the trouble of operation and use.

Method used

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  • Connecting line of USB interface with amplifier of microphone
  • Connecting line of USB interface with amplifier of microphone

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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0014] Embodiments of the present invention are shown in Fig. 1 and Fig. 2 . In Fig. 1, the present invention consists of a high-performance microphone amplifier, a professional audio acquisition system, a low-cut filter, a power manager with ultra-low power consumption, and a 48V generator.

[0015] The high-performance microphone amplifier and the XLR connector circuit shown in Figure 2 are composed of resistors R20-R26, capacitors C28-C34, operational amplifier U5 in the balanced high-gain amplifier, and XLR connector JP1; the operational amplifier U5 is OPA2353UA. The microphone signal or audio signal is first connected to pin 1 of resistors R20 and R24 through the XLR connector JP1, and then the signal is connected to a balanced high-gain amplifier through resistors R20 and R24. After the signal is amplified, it is output by pin 7 of the ...

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PUM

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Abstract

This invention relates to one USB interface connection line with microwave amplifier, which comprises USB interface connection wire with one end connected with microphone through plug and with other end connected with computer through USB interface composed of high property microphone amplifier, low filter, special audio collection system, power manager, 48V generator, wherein, the plug sends the micro signal to high property microphone amplifier through gains of amplifier to put microphone signal to proper level then into low filter; then sending the microphone signal to special frequency collection system.

Description

technical field [0001] The invention and application relate to audio equipment, in particular to a USB interface connection line with a microphone amplifier. It has the characteristics of convenience, lightness, low cost, high performance, etc., and realizes the purpose of the invention that the microphone can be connected to the computer with only one connecting line. Background technique [0002] With the advent of the electronic information age and the popularization of computer applications, there are more and more computer-based audio creation and audio analysis software. In the prior art, to connect these audio signals to the PC, two additional devices must be added, which can be said to be two more links. It is inconvenient for users to carry, and the cost is also greatly increased, and two more links will inevitably reduce the reliability of the system; at the same time, it will increase the trouble in operation and use. In particular, it saves the trouble of plugg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/16H04R3/00
Inventor 王祥贵
Owner 王祥贵
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