Intra-cortical signals are usually affected by high levels of noise (0 dB SNR is not uncommon) either due to the recording equipment or to magnetical and electrical couplings between surrounding sources and the recording system. Besides from hindering effective exploitation of the information content in the signals, noise also influences the bandwidth needed to transmit them, which is a problem especially when a large number of channels are to be recorded. In this paper we propose a novel technique for joint denoising and compression of intra-cortical signals based on the Minimum Description Length principle (MDL). This method was tested on simulated signals and the results showed that the proposed technique achieves improvements in SNR (up to .6 dB over MNML for very noisy signals) and compression ratios greater than alternative denoising/compression methods.
MDL-BASED JOINT DENOISING AND COMPRESSION OF INTRACORTICAL SIGNALS / Carotti, Elias Sebastiano; Jensen, W.; DE MARTIN, JUAN CARLOS; Farina, D.. - STAMPA. - (2012), pp. 657-660. (Intervento presentato al convegno IEEE International Conference on Acoustics, Speech, and Signal Processing tenutosi a Kyoto, Japan nel March 2012) [10.1109/ICASSP.2012.6287969].
MDL-BASED JOINT DENOISING AND COMPRESSION OF INTRACORTICAL SIGNALS
CAROTTI, Elias Sebastiano;DE MARTIN, JUAN CARLOS;
2012
Abstract
Intra-cortical signals are usually affected by high levels of noise (0 dB SNR is not uncommon) either due to the recording equipment or to magnetical and electrical couplings between surrounding sources and the recording system. Besides from hindering effective exploitation of the information content in the signals, noise also influences the bandwidth needed to transmit them, which is a problem especially when a large number of channels are to be recorded. In this paper we propose a novel technique for joint denoising and compression of intra-cortical signals based on the Minimum Description Length principle (MDL). This method was tested on simulated signals and the results showed that the proposed technique achieves improvements in SNR (up to .6 dB over MNML for very noisy signals) and compression ratios greater than alternative denoising/compression methods.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/2496018
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