发明名称 |
NOISE REMOVING METHOD AND DEVICE |
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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申请公布号 |
WO02054387(A1) |
申请公布日期 |
2002.07.11 |
申请号 |
WO2001JP11560 |
申请日期 |
2001.12.27 |
申请人 |
NEC CORPORATION;KATO, MASANORI;SUGIYAMA, AKIHIKO |
发明人 |
KATO, MASANORI;SUGIYAMA, AKIHIKO |
分类号 |
G10L15/20;G10L11/00;G10L21/02;H03H21/00;H03M7/30;H04B1/10;(IPC1-7):G10L21/02;H04B15/00 |
主分类号 |
G10L15/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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