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noise filter circuit

A noise filtering and circuit technology, applied in electrical components, speech analysis, instruments, etc., can solve problems such as misunderstanding, noise interference, and inability to clearly receive other people's voices, so as to improve the experience and avoid interference.

Active Publication Date: 2020-03-17
NANNING FUGUI PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially when the parties to the meeting are people speaking different languages, due to the existence of noise interference, it is easy to make people unable to clearly receive the voices of other people, and it is easy to cause misunderstandings

Method used

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Embodiment Construction

[0046] The specific parameters of the following embodiments are only for better illustrating the present invention, but should not limit the scope of the claims of the present invention with specific numerical values.

[0047] see figure 1 , figure 1 It is a schematic diagram of an embodiment of the noise filtering circuit of the present invention. The noise filtering circuit of the present invention can be used in a device with multiple input interfaces, such as a telephone with multiple microphone inputs used in daily meetings, so as to solve the interference caused by external noise to the conversation voice.

[0048] In this embodiment, the noise filtering circuit includes a first sound processing circuit D1, a second sound processing circuit D2, and a subtractor J1. Wherein, the first sound processing circuit D1 is electrically connected to the first microphone M1 for receiving and processing the first sound from the first microphone M1. The second sound processing cir...

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Abstract

A noise elimination circuit of particular application in enhancing vocal clarity in a teleconference includes a first voice processing circuit, a second voice processing circuit, and a subtracter. The first voice processing circuit receives and processes a first voice from a first microphone and the second voice processing circuit receives and processes the same voice from a second microphone (second voice). The first voice and the second voice include voice signals and noises. The subtracter is electrically connected to the two voice processing circuits to receive the first voice and the second voice respectively processed by the first voice processing circuit and the second voice processing circuit. The subtracter substracts the second voice from the first voice, and outputs a clear voice from which noise has been eliminated.

Description

technical field [0001] The invention relates to a noise processing circuit, in particular to a noise filtering circuit. Background technique [0002] During a conference call, various low-frequency noises outside the conference will be transmitted to other telephone connection parties through the microphone of the phone, and these noises seriously affect the normal communication of all parties in the conference. Especially when the parties to the meeting are people speaking different languages, due to the existence of noise interference, it is easy to make people unable to clearly receive the voices of other people, and it is easy to cause misunderstandings. Contents of the invention [0003] In view of this, it is necessary to provide a noise filtering circuit to avoid the noise from interfering with the conversation voice. [0004] The noise filtering circuit provided by the embodiment of the present invention includes a first sound processing circuit, a second sound pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L21/0208H03H7/00
CPCG10L21/0224G10L2021/02165
Inventor 刘恋
Owner NANNING FUGUI PRECISION IND CO LTD