Showing papers on "Upsampling published in 1984"
TL;DR: A parallel implementation, based on pseudo-QMF filters, is presented as an efficient way to split a signal into equal sub-bands.
531 citations
Patent•
04 Jun 1984
TL;DR: In this article, signal samples from two signal streams are downsampled, filtered and multiplexed for transmission by being fed in parallel to a switching network which feeds samples from the two signal stream (X, Y) alternately to one or other of two phases of filter.
Abstract: Signal samples from two signal streams are downsampled, filtered and multiplexed for transmission by being fed in parallel to a switching network which feeds samples from the two signal streams (X, Y) alternately to one or other of two phases of filter. Each phase applies a plurality of coefficients (15) to each received sample and then sums the samples to provide a resultant downsampled and multiplexed signal. Receiving apparatus carries out the reverse operation and with interpolation the two original signal streams are reconstructed.
13 citations