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System and method for reducing background noise

A background noise and digital system technology, applied in two-way sound reinforcement telephone system, electrical components, amplification control, etc., can solve the problems of high cost and complicated operation, and achieve the effect of low cost and reducing background noise

Active Publication Date: 2013-05-08
BEKEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many of these devices are costly and complex to operate
And because analog components cannot take advantage of these devices, systems with analog components can cause additional problems

Method used

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  • System and method for reducing background noise
  • System and method for reducing background noise
  • System and method for reducing background noise

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Embodiment Construction

[0021] The present invention discloses a system and method for reducing background noise in a communication system (hereinafter referred to as "background noise reduction system" or "system"). The system can be incorporated into any device that provides binary samples from a data stream. In one embodiment, the system can be incorporated into a cordless telephone system to reduce background noise during audio communications. The system is configured to measure a number of bits in a binary sample affected by noise, and the system can then remove the noise by setting those bits to specific values. In an implementation, the particular value depends on whether the sample is positive or negative. For particularly numerical representations, this value can be chosen so that the least significant bit of each sample is as close to 0 as possible. For example, a system that uses two's complement representation sets a negative number whose least significant bits are all equal to *1*, whic...

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Abstract

A method and system to reduce the noise floor of a communications system is disclosed. The system may be incorporated into any device that provides binary samples from a datastream, such as a cordless telephone system. The system is configured to determine a number of bits of the binary samples that are affected by noise. The system is then able to remove the noise by setting those bits to a fixed value. The fixed value may depend on whether the sample is positive or negative. The value to set may be chosen so that the least significant bits of each sample come as close as possible to 0 for that particular numerical representation system. The system can be integrated with other known signal processing methods.

Description

technical field [0001] The invention relates to a method for reducing background noise in a data transmission system, and the invention also relates to a device for reducing background noise. Background technique [0002] In data transmission systems, it is of great significance to protect signals from distortion, where noise is one of the main causes of data signal distortion. In digital systems, error detection, correction techniques, and other devices can be used to provide some protection. However, many of these devices are costly and complex to operate. And because analog components cannot take advantage of these devices, systems with analog components cause additional problems. Noise can introduce unpredictable changes to a signal, such as in video systems, noise can appear as color aberrations or changing object boundaries; in audio systems, noise can appear as static or clicking. The human brain is particularly sensitive to this type of change in the signal. Ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M9/08H03G3/32
CPCH04M9/08
Inventor 王卫锋俞曹刚
Owner BEKEN CORP