Abstract: A table which has a removable top such that one side is a conventional table and the other side has a graphic or logo thereon. The convertible table top is set in a recess in the table base. The table base includes sliding trays for storage and including cup holders.

Abstract: A method for filtering a digital signal sequence with adaptive filters given assistance of discrete parameter wavelet transformation is recited that, among other things, can be utilized in telecommunication technology for echo compensation. The method has especially small filter lengths, and thus low calculating outlay, for determining the optimum coefficient set for the filters employed.

Abstract: A switching matrix network provide switching of digital signals of different sampling frequencies by sampling the digital signals at a sampling frequency greater than any digital input signal and generating an interference signal as a measure of the phase difference or the frequency difference between the sampling frequency and the digital input signal using an input intermediate memory chain. The interference signals are transmitted in coded form through the switching matrix during sampling periods not occupied by data. The original input signal is regenerated at the output of the switching matrix from the interference signal using an output intermediate memory chain and clock regenerating circuits.

Abstract: A digital sine generator for providing fine resolution digital signals, more particularly 16-bit signals, includes a first computer for the selection of argument values and a second computer for the determination of the function values. Equidistant values or equally spaced points are selected as argument values on a periodic zig-zag characteristic so that for the function formation with the sine values in the range of the arguments between -.pi./2 and +.pi./2 is found to be sufficient. For the calculation of the sine values, a specific 7th order polynomial is used which can be implemented by five successive simple computations as a consequence of optimum selection of the coefficients.