| 主权项 |
1. A noise suppression system, comprising:
a unit, as executed by a processor, for successively acquiring an input signal in a spectrum domain; a unit, as executed by said processor, for successively estimating an instant noise value in the spectrum domain from said input signal; a unit, as executed by said processor, for deriving a provisional estimate speech in the spectral domain from said input signal and said instant noise value; and a unit, as executed by said processor, for correcting said provisional estimate speech using a reference pattern of speech stored in a storage unit, said correcting using a distribution for said reference pattern as comprising clean speech without a noise contamination, wherein, in said unit for deriving said provisional estimate speech, said provisional estimate speech is derived by suppressing a noise element in said input signal with said instant noise value, and wherein said unit for correcting said provisional estimate speech includes:
a unit for transforming said provisional estimate speech derived in the spectral domain into a feature vector in a logarithmic domain or a cepstrum domain;a unit for correcting said provisional estimate speech, transformed into said feature vector, using a reference pattern in a feature vector domain;a unit for transforming said corrected provisional estimate speech in the spectrum domain; anda unit for acquiring an estimate speech by second suppressing, in the spectrum domain, a noise element in said input signal. |
