Voice separating device for reducing crosstalk phenomenon

Abstract

The present invention provides a voice separating device which reduces crosstalk and connects between a telephone / switch and a network server provider with electricity. The voice separating device includes a low-pass filter, a phone connecting port, a line connecting port and a high frequency impedance matching circuit. The high frequency impendence matching circuit generates impedance matching by means of inducing high frequency noise on the phone connecting port, and makes the high frequency noise flow to the high frequency impedance matching circuit, so as to make the high frequency noise induced by the line connecting port on the phone connecting port to absorb by the high frequency impedance matching circuit, thus to reduce the crosstalk occurred on the phone connecting port side.

Description

Technical field [0001] The invention relates to a voice separation device, in particular to a voice separation device capable of reducing crosstalk. Background technique [0002] In recent years, due to the rapid development of the Internet, in addition to providing general e-mail transmission services, it also combines various multimedia services such as voice, pictures, and dynamic images. And these services are accompanied by a very large amount of data, so users who use ordinary modems and dial-up telephone networks to access the Internet are increasingly unable to meet the speed of ordinary modems to download data. [0003] In order to enable users to obtain the ability to download data from the Internet at a higher speed, for example, Internet Service Providers (ISPs), such as telecommunications bureaus, have launched various devices that use Digital Subscriber Line (DSL) technology. The most common is ADSL (Asymmetric Digital Subscriber Line) equipment. ADSL technology all...

AI Technical Summary

Problems solved by technology

[0009] But because the phone connection port 812 and the line connection port 813 of the voice separation device 81 are too close to each other due to factors such as environmental restrictions, the high-frequency noise generated at the line connection port 813 will be induced on the phone connected to port 812, and making the phone connected to port 812 will also generate high-frequency noise

Compared with the input impedance of the telephone / exchange 83, the high-frequency noise cannot be effectively eliminated due to the poor impedance matching between the input impedance of the telephone connection port 812 and the high-frequency noise. The high-frequency noise induced by the port 812 will be transmitted to the user's phone end through the phone / switch 83, and then the user will hear interference noise in the microphone when using the phone, which is the so-called crosstalk (crosstalk). -talk) phenomenon, so how to reduce crosstalk to improve call quality is an important issue

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