I am new to Pd and I am attempting to manipulate audio I have coming in using [Openpanel]. I want to be able to rewind the file, not to the beginning but at a set rate, and I was wondering if any one knew how.
I currently tracking "where" the audio file is using [Metro 50]-[snapshot~] and then dividing that number by the sample rate to get a number between 0 and 1. I thought it might be possible to achieve the rewind by somehow being able to decrease the number received from the process above and then putting that into [phasor~]. I am not sure how to decrease the number at a steady rate though. So I guess that is the first question- How can I decrease a number being received at a constant rate.
The second is if it would be possible to use [rewind(. I am not really sure what it does but based from the name it seems like it might do what I want.

Thank you,

Recneps12

This is a little confusing. If you want the 0-1 phase value you should just [snapshot~] [phasor~]. Also, [rewind( is a message. It will only cause the object that receives it to rewind, but I don't know what object you are referring to. And [openpanel] doesn't play audio, it just returns a file and path. I assume you mean you're playing back a file in an array? (I realize this is mainly newbiespeak. I don't mean to sound like I'm picking you apart; I'm just trying to clarify.)

By "rewind at a set rate" it sounds like you want it to play in reverse. Sending [phasor~] a negative frequency should do the trick.

Post your patch and we can get a better sense of what you're trying to do and how to fix it.

Not sure if you have this sorted but I have this cool patch which sounds like it could be useful. There is a playback speed slider where you can ffwd and rewind a loaded sample.

http://www.pdpatchrepo.info/hurleur/22_Reading_Audio-files_[tabread]_.pd

yes Maelstorm that was exactly what I was looking for. Thank you!