| 摘要 |
Disclosed is a noise suppression device including an input signal analyzer 8 that analyzes the harmonic structure and periodicity of a plurality of input signals on the basis of the power spectra of the plurality of input signals, a power spectrum synthesizer 9 that synthesizes the power spectra of the plurality of input signals to generate a synthesized power spectrum according to the result of the analysis by the input signal analyzer 8, a noise suppression amount calculator 10 that calculates an amount of noise suppression on the basis of the synthesized power spectrum generated by the power spectrum synthesizer 9 and an estimated noise spectrum estimated from the input signals, and a power spectrum suppressor 11 that carries out noise suppression on the synthesized power spectrum generated by the power spectrum synthesizer 9 by using the amount of noise suppression calculated by the noise suppression amount calculator 10. |
