which can be described theoretically (mathematically) but cannot be realized practically (physically) What does it mean to say that "sinc" filters are ideal?I suggested to someone that one can create a sinc filter that is ideal enough to be indistinguishable from the ideal, given certain limitations with the data in the first place. Is that true? It ...https://dsp.stackexchange.com/questions/23791/what-does-it-mean-to-say-that-sinc-filters-are-ideal