MASKER SOUND GENERATION APPARATUS AND PROGRAM
First Claim
Patent Images
1. A masker sound generation apparatus comprising:
- an acquisition part that acquires a sound signal; and
a generation part that repeats a process of outputting a masker sound signal obtained by changing a sequence of arrangement of the sound signal acquired by the acquisition part, and that repeats a process of altering a manner of changing the sequence of arrangement of the sound signal.
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Abstract
In a masker sound generation apparatus, an acquisition part acquires a sound signal, and a generation part generates a masker sound signal based on the acquired sound signal. Specifically, the generation part divides the sound signal acquired by the acquisition part into a plurality of sections each having a predetermined time length, then repeats a sorting process of sorting the divided sections as a process of changing the sequence of arrangement of the sound signal, and alters a manner of sorting the sections each time the sorting process is repeated.
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Citations
15 Claims
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1. A masker sound generation apparatus comprising:
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an acquisition part that acquires a sound signal; and a generation part that repeats a process of outputting a masker sound signal obtained by changing a sequence of arrangement of the sound signal acquired by the acquisition part, and that repeats a process of altering a manner of changing the sequence of arrangement of the sound signal. - View Dependent Claims (2, 3, 4)
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5. A computer readable storage medium containing a program executable by a computer to perform:
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acquiring a sound signal; repeating a process of outputting a masker sound signal obtained by changing a sequence of arrangement in the acquired sound signal; and repeating a process of altering a manner of changing the sequence of arrangement of the sound signal.
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6. A masker sound generation apparatus comprising:
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an acquisition part that acquires a sound signal; and a generation part that divides the sound signal acquired by the acquisition part into a plurality of sections each having a predetermined time length and containing a sound signal fractions, then generates sound signal fractions obtained by selecting some of the divided sections and by reversing each of the sound signal fractions of the selected sections, and sequentially outputs the generated sound signal fractions to form a masker sound signal. - View Dependent Claims (7, 8, 9)
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10. A computer readable storage medium containing program executable by a computer to perform:
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acquiring a sound signal; dividing the acquired sound signal into a plurality of sections each having a predetermined time length and containing a sound signal fractions; generating sound signal fractions obtained by selectively reversing the sound signal fractions in some of the divided sections; and sequentially outputting the generated sound signal fractions to form a masker sound signal.
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11. A masker sound generation apparatus comprising:
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an acquisition part that acquires a sound signal; and a generation part that generates a masker sound signal obtained by changing a sequence of arrangement of the sound signal acquired by the acquisition part, wherein the generation part performs a normalization process of limiting fluctuation in time domain of a sound volume of the masker sound signal within a predetermined range during the course of generating the masker sound signal. - View Dependent Claims (12, 13, 14)
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15. A computer readable storage medium containing program executable by a computer to perform:
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acquiring a sound signal; generating a masker sound signal obtained by changing a sequence of arrangement in the acquired sound signal; and carrying out a normalization process of limiting fluctuation in time domain of a sound volume of the masker sound signal within a predetermined range during the course of generating the masker sound signal.
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Specification