пн, 8 апр. 2019 г. в 15:05, Alexander E. Patrakov <patrakov@xxxxxxxxx>: > > 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. Sorry for the stupid question. This is answered in Chapter 5. -- Alexander E. Patrakov _______________________________________________ pulseaudio-discuss mailing list pulseaudio-discuss@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
