Discrete surround audio system for home and automotive listening

一种声音处理、声道的技术，应用在立体声系统、准立体声系统、立体声装置等方向，能够解决缺少中央声道编程信息等问题

Inactive Publication Date: 2010-09-29
HARMAN INT IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the very large class of quadraphonic recordings that existed in the 1970s and 1980s, slowly to the existing five-channel recordings, but lacking the programming information for the center channel

Method used

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  • Discrete surround audio system for home and automotive listening
  • Discrete surround audio system for home and automotive listening
  • Discrete surround audio system for home and automotive listening

Examples

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Embodiment Construction

[0022] figure 1 is a flowchart 100 of a method of acoustically processing an input signal, such as an audio signal, to enhance the perception of sound output to a listener. While specific structures and operations are shown, other structures may be used with fewer or additional components or operations. At block 110, the sound processing system receives an input signal, or signals, for processing.

[0023] The input signal can include five channels, such as a surround sound signal, with input center, input front left, input front right, input surround left and input surround right channels. The five-channel input signal may have been previously recorded as a five-channel signal or it may be a decoded signal. Five-channel recordings can be stored on a medium such as a compact disc (CD) or magnetic tape. Commercial five-channel signals include Dolby Digital, AC-3, DTS and MLP. Although a five-channel input signal is discussed, the sound processing system may also process oth...

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PUM

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Abstract

A sound processing system increases the robustness of surround sound in various playback situations. The system may process an incoming signal, such as a five-channel surround sound signal, with a first and a second matrix. The first and second matrices produce outputs signals from the input incoming signals. At least one of the output signals may be combined before being sent to the speakers.

Description

technical field [0001] This invention relates to sound systems, and more particularly to surround sound systems suitable for use in home and automotive systems. Background technique [0002] A sound system consists of one or more channels from which sound can be perceived. A mono sound system does not produce stereo sound, making it impossible for the listener to locate the sound. For binaural playback, localization can occur, but possibly poor horizontal positioning, unless the listener is centered between the loudspeakers. Even so, the difference between binaural and mono playback is perceived and felt throughout the room. [0003] In practice, most listeners are unlikely to be exactly centered between the loudspeakers. Presumably, binaural is used because localization and room reproduction are enhanced with more amplifiers and more discrete channels. Binaural loudspeaker systems create a realistic spatial field when the listener is facing a specific direction in a rel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R5/00H03G3/00H04S7/00H04S3/00H04S3/02H04S5/02
CPCH04S7/302H04R2499/13H04S3/02H04S7/307H04S3/002H04S3/008H04R5/02
Inventor D·H·格瑞辛格
Owner HARMAN INT IND INC
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