---------------------------- Original Message ---------------------------- Subject: Re: [music-dsp] WSOLA on RealTime From: "Jacob Penn" <penn.ja...@gmail.com> Date: Wed, September 26, 2018 5:00 pm To: r...@audioimagination.com music-dsp@music.columbia.edu -------------------------------------------------------------------------- > You can indeed do it on real time audio but the tricks is like the previous > email, you’ll need to devise strategies for pitching things up, as > you’ll > be lacking the necessary information to move faster across the buffer from > the write head position. > > You’ll also obviously only be able to slow down a signal, and not speed > it > up. no, even if you slow it down, any finite-sized buffer will eventually overflow.� i presume you mean time-scaling (not pitch shifting) using WSOLA. by "real-time", i mean live samples going in and (assuming no sample rate conversion) the same number of samples going out in a given period of time.� with an upper bound of delay (and the lower bound is imposed by causality) and the process can run indefinitely.� so if you're slowing down audio in real-time and you're running this process for a day.� or for a year. -- r b-j� � � � � � � � � � � � �r...@audioimagination.com "Imagination is more important than knowledge." � � � �
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