Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and apparatus for improving noise discrimination using enhanced phase difference value

A phase difference and noise technology, applied in angle demodulation through phase difference detection, stereo system, quasi-stereo system, etc., can solve problems such as narrow zero position

Inactive Publication Date: 2008-10-15
DOLBY LAB LICENSING CORP
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As more sensing elements are incorporated, more nulls are generated and the numerous generated nulls are narrower

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
  • Method and apparatus for improving noise discrimination using enhanced phase difference value
  • Method and apparatus for improving noise discrimination using enhanced phase difference value
  • Method and apparatus for improving noise discrimination using enhanced phase difference value

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

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

Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation / expansion are applied to the signals in a phase difference dependent manner, consistent with suppression of off-axis pick-up and on-axis enhancement. Nulls between sensitivity lobes are widened, effectively narrowing the sensitivity lobes and improving directionality and noise discrimination.

Description

Method and device for improving noise recognition using enhanced phase difference value Technical field The present invention relates to noise discrimination in signal detection and processing. Background technique FIG. 1 is a block diagram of a conventional real-time frequency domain signal processing system 10 using a frequency sub-band method or a frame-overlap-and-add method sometimes referred to as a frequency sub-band method. This method uses the circuit 11 to divide the input sampling time signal information into a plurality of data blocks called frames. It can be directly provided from a digital sensor or other processing system, or can provide sampled data from an analog sensor or processing system through a standard analog-to-digital conversion (A / D or ADC) method (not shown). These frames can be adjacent or overlapped. Because the data are samples of time domain data, all samples in the frame do not have imaginary parts, and the data is strictly "real numbers". If req...

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
CPCH04R3/00H04R3/005H03D3/22H04R1/40H04S5/00
Inventor 乔恩·C·滕策布鲁斯·G·斯派塞
Owner DOLBY LAB LICENSING CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com