| 摘要 |
A noise removing device comprising a conversion unit for converting an input signal into a frequency region, an SNR calculation unit for using a frequency region signal to determine a signal-to-noise ratio (SNR), a suppression factor generating unit for determining a suppression factor based on the SNR, a suppression factor correction unit for correcting a suppression factor to determine a corrected suppression factor, a multiplying unit for using a corrected suppression factor to weighting a frequency region signal, and an inversion unit for converting a weighted frequency region signal into a time region signal, the noise removing device being preferably used to determine an SNR by calculating a weighted deteriorated voice power spectrum from the power spectrum of a deteriorated voice and that of an estimated noise.
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