Sound field controller and control method
First Claim
1. A sound field controller for reproducing a sound field, comprising:
- an A/D converter for converting an input audio signal into a digital signal;
signal processing means for receiving the digital signal and processing the digital signal using predetermined parameters, thereby generating a sound signal;
input means for inputting conditions including a position of a sound image to be localized, a distance between the sound image and a listener, and a spatial size of the sound field;
parameter control means for setting the parameters used in the signal processing means based on the conditions provided from the input means, whereby the sound signal generated in the signal processing means has characteristics corresponding to the conditions;
a D/A converter for converting the sound signal output from the signal processing means into an analog signal; and
reproduction means for receiving the analog signal from the D/A converter and for amplifying and reproducing the analog signal, thereby generating a sound field providing a distance perspective in accordance with the position of the sound image with respect to the listener and a sense of expansion to the listener.
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Abstract
A sound field controller of the invention reproduces a sound field which provides a distance perspective depending on a position of a sound image for a listener. The sound field controller includes: an A/D converter; a signal processing section for processing the digital signal using predetermined parameters, and generating a sound signal; an input device for inputting conditions which include a position of a sound image to be localized and a distance from a listener; a parameter controller for setting the parameters in the signal processing section so that the sound signal has characteristics in accordance with the input conditions; a D/A converter; and a reproducing unit for amplifying and reproducing the signal output from the D/A converter.
75 Citations
24 Claims
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1. A sound field controller for reproducing a sound field, comprising:
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an A/D converter for converting an input audio signal into a digital signal; signal processing means for receiving the digital signal and processing the digital signal using predetermined parameters, thereby generating a sound signal; input means for inputting conditions including a position of a sound image to be localized, a distance between the sound image and a listener, and a spatial size of the sound field; parameter control means for setting the parameters used in the signal processing means based on the conditions provided from the input means, whereby the sound signal generated in the signal processing means has characteristics corresponding to the conditions; a D/A converter for converting the sound signal output from the signal processing means into an analog signal; and reproduction means for receiving the analog signal from the D/A converter and for amplifying and reproducing the analog signal, thereby generating a sound field providing a distance perspective in accordance with the position of the sound image with respect to the listener and a sense of expansion to the listener. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A sound field control method for reproducing a sound field, comprising the steps of:
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converting an input audio signal into a digital signal; processing the digital signal using predetermined parameters, thereby generating a sound signal; setting conditions including a position of a sound image to be localized, a distance between the sound image and a listener, and a spatial size of the sound field; controlling the parameters used in the signal processing step based on the conditions provided in the condition setting step, whereby the sound signal generated in the processing step has characteristics corresponding to the conditions; converting the sound signal into an analog signal; and amplifying and reproducing the analog signal, thereby generating a sound field providing a distance perspective in accordance with the position of the sound image with respect to the listener and a sense of expansion to the listener. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification