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

Acoustic holographic recording and reproduction system using metamaterial layers

A sound reproduction device and sound technology, applied in the field of holographic recording and reproduction of sound, can solve problems such as expensive, imperfect incident waves, and large size

Active Publication Date: 2021-11-09
ACOUSTIX VR INC
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They often result in impedances that are not perfectly matched to the incident wave, or structures that are very bulky in size compared to the wavelength
On the other hand, active "sinks" require expensive and complex electrical designs

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
  • Acoustic holographic recording and reproduction system using metamaterial layers
  • Acoustic holographic recording and reproduction system using metamaterial layers
  • Acoustic holographic recording and reproduction system using metamaterial layers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] Holographic sound is recorded and reproduced through recorded mono recordings for each left and right ear. This is accomplished by determining the phase shift of the recorded frequencies after dividing the sound into discrete frequencies in a recording device having resonators, each of which resonates at a different frequency, arranged circularly and passing through Non-resonant materials are divided into discrete channels. The resonators are placed in the recording device in a pseudo-random pattern, with the circle of the resonator positioned in front of the microphone that records the sound in mono. To achieve stereo recording, a circular arrangement of two such resonators is used, each associated with a mono microphone. It is then played by arranging the speakers or transducers as a micro-perforated plate that amplifies the sound, i.e. a speaker / transducer arrangement around a central point. The sound is then played directionally based on where the sound was origin...

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

Holographic sound is recorded and reproduced by recording monophonic recordings from each left and right ear. This is achieved by determining the phase shift of the recorded frequencies after dividing the sound into discrete frequencies in a recording device with resonators, each circularly arranged resonating at a different frequency, arranged circularly and through non- The resonant material is divided into discrete channels. The resonators are placed in the recording device in a pseudo-random manner, with the circle of the resonator positioned in front of a microphone that records the sound in mono. The sound is then played by arranging speakers or transducers in the microporous sheet that amplifies the sound, where the speakers / transducers are arranged around a central point. The sound is then played directionally based on where the sound was originally recorded and the specific transducer position around the center point.

Description

technical field [0001] The present disclosure relates generally to recording and reproduction of sound, and more particularly, to holographic recording and reproduction of sound. Background technique [0002] Basic audio recording and reproduction technologies are ubiquitous and an integral part of our everyday lives. These areas cover the entire process from recording to reproduction (e.g. music recording and reproduction in recording studios, concert halls, etc.) and subsequent reproduction in home entertainment systems, telephone / office communications, public address systems, etc. The ultimate goal is for reproduction to sound exactly as the sound was first created. In other words, we want various factors such as amplitude, frequency content and depth perception, spatial position, etc. to be in the same sound field as when it was originally recorded. [0003] Recently, steps have been taken to perform virtual video / sound recording and reproduction in this area. Virtual...

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): H04R5/027H04R1/28H04R5/02H04R5/04H04R17/00H04S5/00
CPCH04R1/2838H04R2201/34H04R5/04H04R5/02H04R5/027H04S5/005H04S2400/15H04R17/00G11B20/00992G11B20/10527G11B2020/10564G11B2020/10601H04S7/307
Inventor G·P·马瑟
Owner ACOUSTIX VR INC