Abstract: A method for identifying signals of the same origin is described. The signals are identified based upon a method of system analysis, wherein an accumulated value of an attenuation weighted by power of an incoming channel, the so-called correspondence coefficient, is used as the criterion whether two signals are of the same origin.

Abstract: A method for identifying signals of the same origin is described. The signals are identified based upon a method of system analysis, wherein an accumulated value of an attenuation weighted by power of an incoming channel, the so-called correspondence coefficient, is used as the criterion whether two signals are of the same origin.

Abstract: To compensate the echo contained in an echo-affected received signal it is proposed to generate a compensation signal with the aid of adaptive filter means, which compensation signal is subtracted from the echo-affected received signal. The adaptive filter means are adapted in dependence on a correlation between the echo-affected received signal and the compensation signal. By the insertion of an additional virtual echo path defined adaptation behavior can be ensured even in the case of small signals.

Abstract: The invention relates to a method for suppressing spurious noise in a signal field (S2), e.g. in a speech signal spectrum, containing a plurality of signal components which each adopt a value of a signal level and are assigned to an ordinate area (T, F). According to said method, the distribution function (P2(E)) of the signal field is first determined. As a function of the signal level, said distribution function indicates the size of the fraction of those signal components whose signal level is lower than their argument value (E). The signal level values are then modified, based on a comparison between the distribution function (P2(E)) and a reference distribution function which has been obtained from a distribution function that was determined for a set of reference models, whereby the sequece of signal components remains unchanged with regard to their energy level and signal components whose original signal levels are identical, are assigned the same modified signal levels.

Abstract: A method and device for recognizing individual words of spoken speech can be used to control technical processes. The method proposed by the invention is based on feature extraction which is particularly efficient in terms of computing capacity and recognition rate, plus subsequent classification of the individual words using a neural network.