Digital Sound: Variable Speeds with same pitch: How?
May 28, 2009 2:44 PM Subscribe
many programs and devices have a function that slows down or speeds up audio without changing the pitch.
my rockheaded layman's theory on illustrating how this must be done is that it divides the whole audio track into something like audio pixels that are so short that they can be shortened without actually removing any of the details that you're hearing--
it's just you're hearing every small detail for less of an amount of time (likewise with slower speed, it lengthens the amount of time that you hear every of those little "audio pixels" so that it is twice as slow).
posted by candyhammer to Media & Arts (13 answers total) 5 users marked this as a favorite
my question for the hive is:
whether anyone knows what that process is called, or what of any number of names it has;
what is a more sophisticated explanation of the way that effect functions (or, 'an accurate explanation', as the case may be, though I think my theory is pretty sound, again, in terms of telling it like a four-year-old would understand rather than examining and presenting the finer points for whatever the process consists of);
and lastly, whether there are any interesting articles, resources, or discussions about it, especially regarding its introduction to the sound production/editing world and its early days in use.