Sound system, sound reproducing apparatus, sound reproducing method, monitor with speakers, mobile phone with speakers

a sound system and apparatus technology, applied in the field of apparatus for reproducing sound, can solve the problems of difficult application in the case of arbitrary sound source array, and inability to apply to a common listening space, and achieve the effect of maximizing the relative difference between sound pressure levels

Inactive Publication Date: 2010-08-12
KOREA ADVANCED INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes an improved audio device called The technical effect of this patented technology is that it allows users to hear sounds even if they are outside their own home or office. It achieves this through optimal sound sources signals generated from a transfer function that reflects how well the sound waves travel inside the room. By maximizing the differences in sound pressures at different locations throughout the room, the user's experience will become more immersive.

Problems solved by technology

This patent describes different techniques used to enhance the performance of sound fields in a certain area. These include active noise control, passive noise control, and interference suppression. Each one of these techniques have its own advantages and disadvantages. Active noise control improves sound quality but cannot achieve optimal spatial placement of multiple loudspeakers. Passive noise control allows for independent adjustment of sound levels based on factors such as reverberation, reflection, absorption, and scattering caused by surrounding sounds. Interference suppression involves reducing sound power within a specified region while maintaining good sound quality. Controlled sound power refers to how much sound power is produced when a single sound source is activated. Different techniques aimed towards achieving both desired sound intensity and directivity, including limiting assumptions about the listener's position and reflecting the acoustic characteristics of the listening space.

Method used

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  • Sound system, sound reproducing apparatus, sound reproducing method, monitor with speakers, mobile phone with speakers
  • Sound system, sound reproducing apparatus, sound reproducing method, monitor with speakers, mobile phone with speakers
  • Sound system, sound reproducing apparatus, sound reproducing method, monitor with speakers, mobile phone with speakers

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Embodiment Construction

[0049]Above all, a theoretical background relating to the present invention is described in detail.

[0050]FIG. 1 is a schematic drawing for explaining the theoretical contents relating to the present invention. FIG. 1 shows an acoustic space schematically. In the acoustic space, the first speaker and the second speaker are installed. The acoustic space is divided into a zone that is selected as an audible zone, where the listener exists (hereinafter, it is called as the “audible zone”), and a zone other than the audible zone, where the listener does not exist (hereinafter, it is called as the “inaudible zone”). In FIG. 1, the audible zone and inaudible zone are schematically distinguished by a circular dotted line. The inaudible zone means practically the total zone other than the zone where the listener exists.

[0051]In the case that there are the first sound source, the second sound source, . . . , and the Nth sound source in the acoustic space, the sound pressure (p({right arrow over

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Abstract

The present invention relates to an apparatus for reproducing sound, a method for reproducing sound, a monitor with speakers, and a mobile phone with speakers. An apparatus according to the present invention is an apparatus for reproducing sound from original source signals, and comprises a control means, a first speaker, and a second speaker. The control means receives first and second original source signals, and controls magnitudes and phases of the received first and second original source signals so that a sound pressure level in a pre-determined zone is higher than a sound pressure level in zone other than the pre-determined zone, and outputs first and second controlled source signals. The first speaker receives the first controlled source signal and reproduces sound. The second speaker receives the second controlled source signal and reproduces sound. The apparatus according to the present invention can provide the sound environment in which only the person using the sound system enjoys the sound.

Description

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Claims

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Application Information

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Owner KOREA ADVANCED INST OF SCI & TECH
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