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- W2034885162 abstract "The discrete-time speech signals obtained by Nyquist uniform sampling (NUS) have two kinds of redundant samples. One originates from the time-varying instantaneous bandwidth. The other originates from non-compactness of spectral support (SS) in time-frequency domain (TFD). In this paper, the sub- Nyquist nonuniform sampling (SNNS) and the perfect reconstruction (PR) formula are proposed for removing the redundant samples due to the time-varying instantaneous bandwidth (IB) in speech signals. In the proposed method, the instantaneous sampling frequency (ISF) varies, depending on the least upper boundary of spectral support of a speech signal in TFD. The definition of the IB, which determines the ISF and is used for generating the set of samples that represent continuous- time signals perfectly, is given." @default.
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- W2034885162 date "2005-11-01" @default.
- W2034885162 modified "2023-09-23" @default.
- W2034885162 title "Sub-Nyquist Nonuniform Sampling and Perfect Reconstruction of Speech Signals" @default.
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- W2034885162 doi "https://doi.org/10.1109/tencon.2005.301244" @default.
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