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Discrete surround audio system for home and automotive listening

A sound processing, two-channel technology, applied in stereo systems, quasi-stereo systems, stereo devices, etc., can solve problems such as lack of central channel programming information

Inactive Publication Date: 2005-02-23
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 flow chart 100 of a method of sound processing an input signal, such as an audio signal, which enhances the perception of the sound output to the listener. Although 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 signal, 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 can be previously recorded as a five-channel signal or it can be a decoded signal. Five-channel recordings can be stored on a medium, such as a compact disc (CD) or tape. Commercial five-channel signals include Dolby Digital, AC-3, DTS and MLP. Although five-channel input signals are discussed, the sound processing system can also process other numbers of inp...

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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 output 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] The present invention relates to a sound system, in particular to a surround sound system suitable for home and car systems. Background technique [0002] The sound system includes one or more channels from which sound can be sensed. The monophonic sound system does not produce stereo sound, so that the listener cannot determine the position of the sound. For two-channel sound reproduction, localization can occur, but the horizontal localization may be poor, unless the listener is in the center between the speakers. Nonetheless, the difference between two-channel sound reproduction and mono sound reproduction can be felt and felt throughout the room. [0003] In fact, most listeners cannot be located exactly in the center of the speaker room. Presumably, dual channels are used because positioning and room playback are enhanced with more loudspeakers and more discrete channels. The two-channel loudspeaker system can generate a realistic spatial field when th...

Claims

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Application Information

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