On Mon, Jun 27, 2011 at 02:35:23PM +0200, [email protected] wrote:
> Would this result in some kind of reverb type effect as Fons suggested? One of them would sound like a resonance, it would 'smear out' some frequency bands. Many of them combined could be made to sound like a reverb. Such filters are commonly used as part of reverb algorithms, e.g. zita-rev1 has 8 of them. > I'm looking for a way to adjust the phase of a signal rather than the > amplitude. Does such a plugin already exist? If not which ladspa plugin > would be the most suitable to start from? Tricky. A sudden change of phase would sound as a click, and a gradual one would be a change of frequency. This is because phase and frequency are related: frequency = derivative of phase, phase = integral of frequency. Are you somehow trying to match phases across a crossfade or something similar ? There's no general solution for that. The way apps like e.g. zita-at1 do this is to estimate the pitch (fundamental frequency) of the signal and either skip or jump ahead an integral number of cycles with a crossfade. That way the phases do match. There's AFAIK no solution for this for an arbitrary signal. Ciao, -- FA _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/listinfo/linux-audio-dev
