пн, 8 апр. 2019 г. в 13:08, Alexander E. Patrakov <patrakov@xxxxxxxxx>: > I have looked again at the paper, and have a DSP question. > > The thesis starts with designing a shelf filter. That is, a filter > that contains a flat area at low frequencies, a flat area at high > frequencies (but with a different gain), and some transition in > between. Then, for some unknown reason, it is transformed into a > band-pass shelving filter. Then there is some talk how to "stitch" > together several band-pass shelving filters. > > Why would one need to do this at all? I.e., why can't one just cascade > several shelf filters, designed according to the correct transition > frequencies, with the height of the shelf being the dB difference of > the desired gains of the neighboring bands? Just for some context: the reason why I asked is the ripple on Figure 2.5 that seems to be avoidable in my approach. -- Alexander E. Patrakov _______________________________________________ pulseaudio-discuss mailing list pulseaudio-discuss@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
