G - Physics – 11 – B
Patent
G - Physics
11
B
354/137
G11B 20/18 (2006.01) G11B 20/02 (2006.01)
Patent
CA 1259706
ABSTRACT: "Method of and arrangement for restoring invalid samples of an equidistantly sampled signal" Method of and arrangement for restoring samples, which are considered invalid, of an equidistantly sampled signal on the basis of correcting replacement valued derived from an environment of samples which are considered as being valid. The values of the samples to be restored can be estimated in a simple and time-saving manner by determining, first of all, a quantity which represents a number of samples and is a measure of the periodicity of an environment of the valid samples, located at an interval containing invalid samples. Using a quantity thus determined it is possible to form a simple system of equations containing the values to be estimated as unknown quantities, it being possible to solve these unknown quantities on the basis of "real time" and using simple means. The proposed technique can advantageously be applied to the restoration of a speech signal in which intervals up to approximately 12 msec con- taining invalid samples may occur, It has been found that then unvoided speech can be restored in the same way as voiced speech.
534401
Fetherstonhaugh & Co.
N.v.philips'gloeilampenfabrieken
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