Unlock instant, AI-driven research and patent intelligence for your innovation.

Noise reduction for dual-microphone communication devices

A technology of microphone and noise reduction system, applied in the field of noise reduction system

Inactive Publication Date: 2014-09-17
INTEL MOBILE COMM GMBH
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Multichannel noise PSD estimators for systems with two or more microphones have not been well studied

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Noise reduction for dual-microphone communication devices
  • Noise reduction for dual-microphone communication devices
  • Noise reduction for dual-microphone communication devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The following detailed description refers to the accompanying drawings, which show by way of illustration specific details and embodiments in which the invention may be practiced. The word "exemplary" is used herein to mean "serving as an example, instance or illustration". Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs.

[0019] Note that in this specification, terms included in "one embodiment", "example embodiment", "an embodiment", "another embodiment", "certain embodiments", "various embodiments", References to various features (such as elements, structures, modules, components, steps, operations, features, etc.) in "other embodiments", "different embodiments", "alternative embodiments" etc. are intended to mean any such Features are included in one or more embodiments of the disclosure and may or may not necessarily be combined in the same embodiment.

[0...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to noise reduction for dual-microphone communication devices. A method, system, and computer program product for managing noise in a noise reduction system, comprising: receiving a first signal at a first microphone; receiving a second signal at a second microphone; identifying noise estimation in the first signal and the second signal; identifying a transfer function of the noise reduction system using a ratio of a power spectral density of the second signal minus the noise estimation to a power spectral density of the first signal, wherein the noise estimation is removed from only the power spectral density of the second signal; and identifying a gain of the noise reduction system using the transfer function.

Description

technical field [0001] Various embodiments of the invention generally relate to noise reduction systems such as, for example, in communication devices. In particular, various embodiments of the invention relate to noise reduction in two-microphone communication devices. Background technique [0002] Noise reduction is the process of removing noise from a signal. Noise can be any undesired sound present in a signal. Noise reduction techniques are conceptually very similar regardless of the signal being processed, but a priori knowledge of the characteristics of the expected signal may mean that the implementation of these techniques varies greatly depending on the type of signal. [0003] All recording devices, both analog and digital, have qualities that make them susceptible to noise. The noise can be incoherent random or white noise, or coherent noise introduced by the mechanism or processing algorithms of the device. [0004] In electronic recording devices, one form ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
CPCG10L19/03H04R2460/01H04R29/006H04R3/005H04R2499/11
Inventor M.热伊布C.内尔克C.赫尔格罗茨P.瓦里C.博热安
Owner INTEL MOBILE COMM GMBH