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

A method for synthesizing room reverberation

A synthesis method and room technology, applied in the direction of sound-generating equipment, stereo systems, electrical components, etc., can solve problems such as inaccurate reverberation and large amount of calculation

Active Publication Date: 2016-09-28
INST OF ACOUSTICS CHINESE ACAD OF SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a room reverberation synthesis method to solve the technical problems of large amount of calculation and inaccurate reverberation in the existing room reverberation synthesis method, so as to provide real-time reconstruction of virtual sound field and real-time playback of three-dimensional audio Provide important technical support

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
  • A method for synthesizing room reverberation
  • A method for synthesizing room reverberation
  • A method for synthesizing room reverberation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The method for synthesizing room reverberation according to the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0028] Room reverberation mainly consists of three parts: direct sound, early reflections and late reverberation. Because the early reflections generally only include a small number of reflected sound components, the present invention synthesizes the early reflections by utilizing the room reverberation image (image) synthesis method (a room reverberation synthesis method based on acoustic physical transmission characteristics); adopts the feedback delay network (feedback delay network, FDN) synthesizes late reflections. This room reverberation synthesis method has the advantages that the synthesis method based on physical characteristics can accurately synthesize early reflections and the calculation speed of the synthesis method based on perception is fast.

[0029] Such as figure 1 As show...

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 provides a room reverberation synthesis method. The method comprises the following steps: synthesizing early reflection by using a room reverberation image synthesis method; computing a curve indicating the attenuation of early reflection along with time in each clinical band by using a parameter method in a way of taking the synthesized early reflection as an input; combining the curves in each band into one curve within the ranges of all the bands for serving as the EDR (Enhanced Data Rate) of the early reflection; evaluating the coefficient of an approximate filter with a frequency domain approximation method by using the EDR of the early reflection for serving as an FDN (Feedback Delay Network) parameter; and performing later-stage reverberation synthesis on the FDN parameter through a feedback delay network method in order to synthesize room reverberation. The room reverberation synthesis method has the advantages of accurate synthesis of the early reflection in a physical characteristic-based synthesis method and high computing speed of a perception-based synthesis method.

Description

technical field [0001] The invention relates to the fields of room acoustics, virtual sound field, sound field control and the like, and mainly proposes an efficient room reverberation synthesis method for three-dimensional audio playback. Background technique [0002] Room reverberation describes the acoustic properties of a room and can add spatial properties to the perception of an acoustic signal. The room reverberation is modeled and synthesized by means of signal processing. This method has strong theoretical research value and broad application prospects. Typical applications include: room acoustic visualization, sound effect processing, virtual sound field reconstruction and 3D audio playback, film and television post-production, etc. Room reverberation synthesis methods can be roughly divided into methods aiming at synthesizing the physical characteristics of sound wave transmission in a room and room reverberation synthesis methods based on auditory perception cha...

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 Patents(China)
IPC IPC(8): H04S3/00G10K15/12
Inventor 李军锋夏日升颜永红
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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