On Wed, Nov 25, 2015 at 9:50 AM, Moritz Barsnick <barsn...@gmx.net> wrote: > On Wed, Nov 25, 2015 at 09:48:36 +0100, Paul B Mahol wrote: >> Patch attached. > >> +For example, you have recorded guitar with two microphones placed in >> +different location. Because the front of sound wave has fixed speed in >> +normal conditions, the phasing of microphones can vary and depends on >> +their location and interposition. The best sound mix you will get when >> +these microphones are in phase (synchronized). Note that distance of >> +~30 cm between microphones makes one microphone to capture signal in >> +antiphase to another microphone. That makes the final mix sounding moody. >> +This filter helps to solve phasing problems by adding different delays >> +to each microphone track and make them synchronized. > > For example, you have recorded a guitar with two microphones placed > in different locations. > > This part I don't actually understand (is the fixed speed really the > reason?), but I fixed the grammar anyway: > > Because the front of sound wave travels at fixed speed in normal > conditions, the phasing of microphones can vary and depends on their > location and interposition. > > The best sound mix can be achieved when these microphones are in > phase (synchronized). Note that a difference of ~30 cm in the > distances between source and microphones leads to one microphone > capturing its signal in antiphase to the other. > > That makes the final mix sound moody. This filter helps to solve > phasing problems by adding different delays to each microphone track > and make them synchronized. > > I'm not sure "synchronized" is the correct term though, but I'm no > expert.
Synchronized should be fine, for a more technical audience who desire precise terms, above paragraph has a "in phase (synchronized)" clarifying the colloquialism. BTW, last line could be better as "and thus making them synchronized". [...] _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel