Hi been trying to build a sample player and have come stuck with the playback options

once the sound file has been loaded and starts playing I want it to only play once, and have a toggle switch for option to loop it.

As of now it seems to just keep on looping. I have managed to figure this out with tabplay~. using spigot but I have no idea how to do it with tabread~ and phasor.

help would be much appreciated

audio2.pd

Hi Sean, welcome to this forum.

Your problem is that you are using [phasor~], and that how it works: it constantly moves from 0 to 1, over and over and over again, thus reading the samples from beginning to end in an eternal loop. In your case, it's better to use [line~], so that you can bang a message when you want to start the playback. See: audio2-line.pd

Hope this helps, let me know if you need some help understanding this.

Cheers,
Gilberto

@sean_kc To do this with a [phasor~] based sampler, add this to your patch:

Patch: phasor-once.pd

This is kind of complicated, so I'll do my best to explain what's going on.

Two things to keep in mind:

• phase dictates where you are in a soundfile that is playing back. A phase of 0 is the beginning. A phase of 1 is the very end. A phase of 0.5 is halfway through.

• cycles dictates how fast to play through a sound file. A cycle of 1 hz means play the entire soundfile in 1 second. A cycle of 0.333 hz means play the entire soundfile in 3 seconds. A cycle of 3 hz means play the entire soundfile back in 1/3 seconds. A cycle of 0 hz effectively stops playback.

The [catch~] listens to the current phase of the [phasor~]. As @gsagostinho correctly notes, the phase will constantly travel from 0 to 1 indefinitely. When the cycle is just about complete (or when the phase is greater than 0.99 but still less then one) the [expr~] sends out a 1. Once the phase reaches completion, it immediately jumps back to zero. [edge~] outputs a bang when a 1 turns into a 0. When this happens, a 0 is first sent to [ * ~], which silences the audio, and then a bang to the message box below that resets that phase and stops playback (cycles are 0 hz).

When you hit the message box [play_once(, you reopen the audio spigot, set the cycles per second to the rate given by the division object, and restart playback from the beginning (set phase to 0).

@sean_kc If you are interested, here's a complete patch with more features for a [phasor~]-based sampler: phasorSampler3(modified).pd

@gsagostinho thanks that's great, how would you now enable looping (looping option)

@rjp9 thanks for the patch, it's going to be very helpful.

What about something like this?

Cheers,
Gilberto

@sean_kc To go back to "looping mode", just resend the original cycles per second to [phasor~] (in the left inlet), and reset the phase as well (in the right inlet). [phasor~] will just loop automatically. It will only play a one-shot if you hit the message box [play_once(

Check out the 'restart" subpatch in the looper I posted above to get an idea of how to do it.

@gsagostinho Wow love the simplicity. I think you make a good case for just going with a [line~]-based setup.

@rjpg yeah, I love using [line~] for these purposes. I know a lot of people who can do some magic using [phasor~], but I am certainly not one of them

@rjp9 Hey, what are those...sliders behind an array? Nice...

@LandonPD Haha yes. Any guess what that mysterious black bar is doing at the top? Haha.