Method and device for reconstructing a target signal from a noisy input signal
A technology of input signal and target signal, applied in voice analysis, instruments, etc., can solve the problem of expensive calculation
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[0088] image 3 A schematic diagram of a system 300 for reconstructing at least one target signal from a noise-corrupted input signal according to an embodiment is shown.
[0089] System 300 includes short-term transform module 310 , background noise estimator 320 , two buffers 330 and 340 , FNMF module 350 and reconstruction module 360 . A digital single-channel input signal 301, corresponding to a recording of a signal of interest, such as speech corrupted by noise, is input into a short-term transformation module 310, which performs windowing and transformation into short-term time frames in order to generate non-negative features Vector 311. Buffer 330 stores these features to generate matrix V331.
[0090] The features 311 are also processed by a background noise estimator 320 which outputs an estimate of the background acoustic noise for each feature vector. Buffer 340 stores these estimates to create matrix B341. The FNMF module 350 then performs a decomposition o...
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