In my experience, in SndBuf, to play the file backwards from the end requires file.samples() - 1 => file.pos; file.rate(-1.);
If the size of the file is, for example, 1000 samples, the first sample is located at 0 and the last sample bit is 999 (not 1000). On my machine, at least, if I set the position beyond the end of the file, it won't play backward. However, when using LiSa, the starting position is 1::samp, and the ending point is 1000::samp davd David Loberg Code School of Music Western Michigan University Sorry PRC it doesn't work: When i set "buf.rate" to 1.0 and "buf.pos" to 0, it does but not the other way around.... me.sourceDir() + "aeiou.wav" => string filename; if( me.args() ) me.arg(0) => filename; SndBuf buf => dac; filename => buf.read; buf.length() => dur totalelengte; buf.samples() => int samples; samples => buf.pos; -1.0 => buf.rate; samples::ms => now; ________________________________ Van: chuck-users-boun...@lists.cs.princeton.edu<mailto:chuck-users-boun...@lists.cs.princeton.edu> <chuck-users-boun...@lists.cs.princeton.edu<mailto:chuck-users-boun...@lists.cs.princeton.edu>> namens Perry Cook <p...@cs.princeton.edu<mailto:p...@cs.princeton.edu>> Verzonden: woensdag 12 februari 2020 20:58<x-apple-data-detectors://3> Aan: chuck-users@lists.cs.princeton.edu<mailto:chuck-users@lists.cs.princeton.edu><chuck-users@lists.cs.princeton.edu<mailto:chuck-users@lists.cs.princeton.edu>> Onderwerp: Re: [chuck-users] playing SndBuf backward You can set the .pos to wherever you like, and set the .rate to a negative number. The sample will happily play backward to zero and stick there (unless you have .loop set). PRC Sent from my iPad > On Feb 12, 2020, at 9:00 AM, > chuck-users-requ...@lists.cs.princeton.edu<mailto:chuck-users-requ...@lists.cs.princeton.edu> > wrote: > > Send chuck-users mailing list submissions to > > chuck-users@lists.cs.princeton.edu<mailto:chuck-users@lists.cs.princeton.edu> > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > or, via email, send a message with subject or body 'help' to > > chuck-users-requ...@lists.cs.princeton.edu<mailto:chuck-users-requ...@lists.cs.princeton.edu> > > You can reach the person managing the list at > > chuck-users-ow...@lists.cs.princeton.edu<mailto:chuck-users-ow...@lists.cs.princeton.edu> > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of chuck-users digest..." > > > Today's Topics: > > 1. Re: => now (herman verbaeten) > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 11 Feb 2020 18:11:09 +0000 > From: herman verbaeten <hver...@hotmail.com<mailto:hver...@hotmail.com>> > To: ChucK Users Mailing List > <chuck-users@lists.cs.princeton.edu<mailto:chuck-users@lists.cs.princeton.edu>> > Subject: Re: [chuck-users] => now > Message-ID: > > <am0pr08mb389035f6190b1d2c897c097ba5...@am0pr08mb3890.eurprd08.prod.outlook.com<mailto:am0pr08mb389035f6190b1d2c897c097ba5...@am0pr08mb3890.eurprd08.prod.outlook.com>> > > Content-Type: text/plain; charset="iso-8859-1" > > Thanks again Mario, > > I have another question: > Can you recommend a procedure to address individual samples of a wave-file > you read into the SndBuf. > I discovered a way to play a part of a wave file starting at a certain point > using ".pos". > I also wonder if there's a way to play it backwards (reverse). > > Cheers, > > herman >
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