NOISE REDUCING DEVICE, NOISE REDUCING METHOD, NOISE REDUCING PROGRAM, AND NOISE REDUCING AUDIO OUTPUTTING DEVICE
First Claim
1. A noise reducing device comprising:
- an acoustic-to-electric conversion section for collecting noise and outputting an analog noise signal;
an analog-to-digital conversion section for converting said analog noise signal into a digital noise signal;
a digital processing section for generating a digital noise reducing signal on a basis of said digital noise signal and a desired parameter;
a retaining section for retaining a plurality of said parameters corresponding to a plurality of kinds of noise characteristics;
a setting section for setting one of said plurality of parameters as said desired parameter of said digital processing section;
a digital-to-analog conversion section for converting said digital noise reducing signal into an analog noise reducing signal; and
an electric-to-acoustic conversion section for outputting noise reducing sound on a basis of said analog noise reducing signal.
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Accused Products
Abstract
A noise reducing device includes: an acoustic-to-electric conversion section for collecting noise and outputting an analog noise signal; an analog-to-digital conversion section for converting the analog noise signal into a digital noise signal; and a digital processing section for generating a digital noise reducing signal on a basis of the digital noise signal and a desired parameter. The device further includes: a retaining section for retaining a plurality of parameters corresponding to a plurality of kinds of noise characteristics; a setting section for setting one of the plurality of parameters as the desired parameter of the digital processing section; a digital-to-analog conversion section for converting the digital noise reducing signal into an analog noise reducing signal; and an electric-to-acoustic conversion section for outputting noise reducing sound on a basis of the analog noise reducing signal.
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Citations
17 Claims
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1. A noise reducing device comprising:
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an acoustic-to-electric conversion section for collecting noise and outputting an analog noise signal; an analog-to-digital conversion section for converting said analog noise signal into a digital noise signal; a digital processing section for generating a digital noise reducing signal on a basis of said digital noise signal and a desired parameter; a retaining section for retaining a plurality of said parameters corresponding to a plurality of kinds of noise characteristics; a setting section for setting one of said plurality of parameters as said desired parameter of said digital processing section; a digital-to-analog conversion section for converting said digital noise reducing signal into an analog noise reducing signal; and an electric-to-acoustic conversion section for outputting noise reducing sound on a basis of said analog noise reducing signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A noise reducing method comprising:
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an outputting step of an acoustic-to-electric conversion section collecting noise and outputting an analog noise signal; an analog-to-digital conversion step of converting said analog noise signal into a digital noise signal; a digital processing step of generating a digital noise reducing signal on a basis of said digital noise signal and a desired parameter among a plurality of said parameters corresponding to a plurality of kinds of noise characteristics, the plurality of said parameters being retained by a retaining section; a setting step of setting one of said plurality of parameters as said desired parameter; a digital-to-analog conversion step of converting said digital noise reducing signal into an analog noise reducing signal; and an outputting step of an electric-to-acoustic conversion section outputting noise reducing sound on a basis of said analog noise reducing signal.
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17. A computer readable recording medium on which a program is recorded, said program making a computer perform:
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an outputting step of an acoustic-to-electric conversion section collecting noise and outputting an analog noise signal; an analog-to-digital conversion step of converting said analog noise signal into a digital noise signal; a digital processing step of generating a digital noise reducing signal on a basis of said digital noise signal and a desired parameter among a plurality of said parameters corresponding to a plurality of kinds of noise characteristics, the plurality of said parameters being retained by a retaining section; a setting step of setting one of said plurality of parameters as said desired parameter; a digital-to-analog conversion step of converting said digital noise reducing signal into an analog noise reducing signal; and an outputting step of an electric-to-acoustic conversion section outputting noise reducing sound on a basis of said analog noise reducing signal.
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Specification