Electrical audio signal processing systems and devices – Binaural and stereophonic – Pseudo stereophonic
Utility Patent
1997-02-04
2001-01-02
Nguyen, Duc (Department: 2743)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Pseudo stereophonic
C381S018000, C381S300000, C381S307000, C381S310000
Utility Patent
active
06169806
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention generally relates to computers, computer systems and desk-top theater systems, and more particularly to a computer, computer system and desk-top theater system which can realize at home, for example, with relative ease, a surround sound system approximating a sound system of a movie theater.
The sound system of the movie theater can reproduce powerful sound with a high presence, and there are demands to realize sound with such a high presence at home or the like.
Conventionally, a home theater system was proposed to reproduce sound having a high presence similar to that realized by sound system of a movie theater. The proposed home theater system includes an audio visual system set up within a listening room at home, a plurality of speakers connected to the audio visual system, and a television monitor. The audio visual system displays on the television monitor a video signal which is reproduced from a video disk, for example, and also supplies to the speakers audio signals which are reproduced from the video disk so as to realize surround sound. In this speaker, each of the speakers are arranged with respect to the television monitor and a listener with a positional relationship which is essentially the same as that employed by the sound system of the movie theater.
According to the proposed home theater system, it is possible to reproduce sound with a high presence which is very similar to that obtained by the sound system of the movie theater.
However, the proposed home theater system is basically the same as setting up a small-scale movie theater at home, and a listening room exclusively for the home theater system must be provided at home. For this reason, there was a problem in that it is impossible to set up the home theater system at home when there is no extra room or space available, such as in a small house or apartment located at the center of the city, for example.
In addition, in order to enjoy the surround sound, there were problems in that furniture or the like cannot be arranged freely within the listening room and materials used for the walls and ceiling become limited to a certain extent when reflections of sound within the listening room are taken into consideration.
Furthermore, in order to enjoy powerful surround sound at home, sound-proofing or noise-proofing must be provided for the listening room so as not to disturb people in other rooms of the house or neighbors, and there was also a problem in that the home theater system as a whole is expensive.
SUMMARY OF THE INVENTION
Accordingly, it is a general object of the present invention to provide a computer, computer system and desk-top theater system in which the problems described above are eliminated.
Another and more specific object of the present invention is to provide a computer, a computer system and desk-top theater system which can realize surround sound with a high presence even within a limited space at home, for example, without the need to provide expensive equipment, and without the need to greatly consider the reflections of sound.
Still another object of the present invention is to provide a computer comprising extraction means for extracting source signals of surround sound from data received via a medium, and processing means for decoding and converting the source signals a audio signals of a plurality of channels. According to the computer of the present invention, it is possible to realize surround sound with a high presence even within a limited space at home, for example, without the need to provide expensive equipment, and without the need to greatly consider the reflections of sound.
A further object of the present invention is to provide a computer comprising extraction means for extracting source signals of surround sound from data received via a medium, and processing means for decoding and converting the source signals into audio signals of a plurality of channels, whereby the processing means includes correction means for correcting a sound field of a plurality of speakers which are arranged approximately concentrically together with a display unit about an operating position of a user operating the computer. According to the computer of the present invention, it is possible to realize surround sound with a high presence even within a limited space at home, for example, without the need to provide expensive equipment, and without the need to greatly consider the reflections of sound.
Another object of the present invention is to provide a computer comprising a main computer body, a display unit coupled to the main computer body, and a plurality of speakers arranged approximately concentrically together with the display unit about an operating position of a user operating the computer, whereby the main computer body comprises extracting means for extracting a video source signal to be displayed on the display unit and source signals of surround sound from data received via a medium, and processing means for decoding and converting the surround sound source signals into audio signals of a plurality of channels. According to the computer of the present invention, it is possible to realize surround sound with a high presence even within a limited space at home, for example, without the need to provide expensive equipment, and without the need to greatly consider the reflections of sound.
Still another object of the present invention is to provide a computer system comprising a main computer body including at least a central processing until and a display unit coupled to the main computer body, whereby the main computer body comprises extracting means for extracting source signals of surround sound from data received via a medium and processing means for decoding and converting the source signals into audio signals of a plurality of channels. The processing means includes correction means for correcting a sound field of a plurality of speakers arranged approximately concentrically together with the display unit about an operating position of a user operating the computer system. According to the computer system of the present invention, it is possible to realize surround sound with a high presence even within a limited space at home, for example, without the need to provide expensive equipment, and without the need to greatly consider the reflections of sound.
A further object of the present invention is to provide a desk-top theater system comprising a computer system having a main computer body including at least a central processing unit and a display unit coupled to the main computer body, and a plurality of speakers arranged approximately concentrically together with the display unit about an operating position of a user operating the computer system, whereby the main computer body comprises extracting means for extracting a video source signal to be displayed on the display unit and source signals of surround sound from data received via a medium, and processing means for decoding and converting the surround sound source signals into audio signals of a plurality of channels. According to the desk-top theater system of the present invention, it is possible to realize surround sound with a high presence even within a limited space at home, for example, without the need to provide expensive equipment, and without the need to greatly consider the reflections of sound.
Other objects and further features of the present invention will be apparent from the following detailed description when read in conjunction with the accompanying drawings.
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Allen, loan “Matching the Sound to the Picture ,”AES 9th International Conference, pp.
Kimura Shinta
Sato Yasuo
Fujitsu Limited
Nguyen Duc
Staas & Halsey , LLP
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