Audio Signal Correction Apparatus and Audio Signal Correction Method
First Claim
1. An audio signal correction apparatus comprising:
- a characteristic extraction module configured to determine whether an input audio signal is a monaural signal or a stereo signal, on the basis of channel information, and to extract a plurality of characteristic parameters for determining whether the input audio signal is a speech signal or a music signal;
a signal type determination module configured to calculate a speech/music discrimination score which indicates whether the input audio signal is close to the speech signal or the music signal, on the basis of the plurality of characteristic parameters;
a level calculation module configured to calculate, with use of the speech/music discrimination score, output levels of a degree of speech and a degree of music; and
a sound quality correction module configured to apply a sound quality correction process to the input audio signal on the basis of the output levels.
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Accused Products
Abstract
According to one embodiment, an audio signal correction apparatus has a characteristic extraction module configured to determine whether an input audio signal is a monaural signal or a stereo signal, on the basis of channel information, and to extract a plurality of characteristic parameters for determining whether the input audio signal is a speech signal or a music signal, a signal type determination module configured to calculate a speech/music discrimination score which indicates whether the input audio signal is close to the speech signal or the music signal, on the basis of the plurality of characteristic parameters and a level calculation module configured to calculate, with use of the speech/music discrimination score, output levels of a degree of speech and a degree of music.
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Citations
9 Claims
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1. An audio signal correction apparatus comprising:
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a characteristic extraction module configured to determine whether an input audio signal is a monaural signal or a stereo signal, on the basis of channel information, and to extract a plurality of characteristic parameters for determining whether the input audio signal is a speech signal or a music signal; a signal type determination module configured to calculate a speech/music discrimination score which indicates whether the input audio signal is close to the speech signal or the music signal, on the basis of the plurality of characteristic parameters; a level calculation module configured to calculate, with use of the speech/music discrimination score, output levels of a degree of speech and a degree of music; and a sound quality correction module configured to apply a sound quality correction process to the input audio signal on the basis of the output levels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An audio signal correction method comprising:
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determining whether an input audio signal is a monaural signal or a stereo signal, on the basis of channel information, and extracting a plurality of characteristic parameters for determining whether the input audio signal is a speech signal or a music signal; calculating a speech/music discrimination score which indicates whether the input audio signal is close to the speech signal or the music signal, on the basis of the plurality of characteristic parameters; calculating, with use of the speech/music discrimination score, output levels of a degree of speech and a degree of music of the input audio signal; and applying a sound quality correction process to the input audio signal on the basis of the output levels.
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Specification