Signal processing method and apparatus for amplifying speech signals
First Claim
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1. A signal processing method of a signal processing apparatus, the method comprising:
- extracting, by a first signal extractor, a first signal having a first frequency band from an audio signal including a speech signal;
generating, by an extension signal generator, a second signal having a second frequency band by using the first signal, the second frequency band not overlapping with the first frequency band;
generating a third signal by adding the first signal and the second signal; and
applying a gain, generated by using a ratio of the speech signal included in the audio signal, to the third signal,wherein the first signal extractor is implemented as hardware.
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Abstract
A signal processing method is provided. The signal processing method includes extracting a first signal having a first frequency band from a sum signal of a left signal and a right signal, generating a second signal having a second frequency band by using the first signal, generating a third signal by using the first signal and the second signal, and applying a gain, generated by using a rate of a center signal included in the sum signal, to the third signal.
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29 Claims
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1. A signal processing method of a signal processing apparatus, the method comprising:
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extracting, by a first signal extractor, a first signal having a first frequency band from an audio signal including a speech signal; generating, by an extension signal generator, a second signal having a second frequency band by using the first signal, the second frequency band not overlapping with the first frequency band; generating a third signal by adding the first signal and the second signal; and applying a gain, generated by using a ratio of the speech signal included in the audio signal, to the third signal, wherein the first signal extractor is implemented as hardware. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A signal processing apparatus comprising:
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a device, and a memory coupled to the device; a first signal extracting unit which extracts a first signal which has a first frequency band from an audio signal including a speech signal; a gain generating unit which generates a gain by using a ratio of the speech signal included in the audio signal; and an extension signal generating unit which generates a second signal which has a second frequency band by using the first signal, the second frequency band not overlapping with the first frequency band, generates a third signal by adding the first signal and the second signal, and applies the gain to the third signal, wherein the first signal extracting unit and the gain generating unit are implemented as hardware. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A non-transitory computer-readable recording medium having embodied thereon instructions that, when executed by a computer, causes the computer to perform a signal processing method, the signal processing method comprising:
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extracting a first signal having a first frequency band from an audio signal including a speech signal; generating a second signal having a second frequency band by using the first signal, the second frequency band not overlapping with the first frequency band; generating a third signal by adding the first signal and the second signal; and applying a gain, generated by using a ratio of the speech signal included in the audio signal, to the third signal.
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Specification