Process and installation for the analysis and retrieval of a sam

Details Process and installation for the analysis and retrieval of a sam Process and installation for the analysis and retrieval of a sam

1984-07-06

1987-08-25

Krass, Errol A.

Boots, shoes, and leggings

364724, 364574, 364577, 375 26, 381 94, H04B 1500, H04B 1404, G06F 738

Patent

active

046897593

ABSTRACT:
To analyze and restore an analog signal by sampling at a frequency between 2.5 and five times the band of the signal and by interpolation, the signals sampled at the rate (F.sub.e) is subjected to low pass filtering for isolating the signal band B, then to an interpolation in several steps each leading to multiplication of the samples by inserting zeros between the available samples and by subjecting the new set of samples obtained to digital low pass filtering. The installation for this may comprise an input filter, an A/D converter and an interpolater. The filter isolates the band of the signal then the interpolater operates in several steps each leading to multiplication of the samples by inserting zeros between the available samples and by subjecting the new set of samples obtained to digital low pass filtering.

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