Hello all,

I am currently working on a sample/loop patch that takes audio input and stores it into a table for playback. I am wanting to take this table and resize it by doubling the existing size of it. Once the table resizes, it would extend the contents of the table to imitate the sound slowing down (pitch shift an octave lower and half speed).

The reason for this is I am replicating the looping functions of a Line 6 DL4 guitar pedal. I got an efficient reverse sub patch working like a charm. Resizing a table by a variable and then editing the contents in this way is what I am not familiar with.

Please note: I don't want to affect the way the table is being read. I want to affect the contents of the table.

Thank you for your time.

Hi, if you are keeping the read speed constant like you mentioned, you can do a sort of offline re-sample with the objects until, tabread, and tabwrite.

Use until to feed a counter that runs through every value of the destination table. For each value, you use tabread to pull a sample from the source loop and write it into the destination table. I think by default, the tabread will round the index to the nearest value, so you will hear artifacts. If you want it to sound smoother, you can read multiple values of the source table and calculate interpolated values. I haven't patched anything like this to share but I can put one together if that would be helpful.

Unless someone knows of a better method!

@Davian It seems a lot of unnecessary work for the patch. You will have no more audio information in the array, although you could calculate intermediate values as LarsXI suggests.
You could just use [block~] if you use a sub-patch for the player.
You can do the same effect I think, and more, like this.......
this.zip
You just need to add the part of your patch that writes the arrays to the above patch.
I might not be understanding though..... is there some special reason to double the length of the array....... that you need to use later on?
David.

@whale-av

The patch I'm working on involves "overdubbing". So if I were to want the audio recorded to play at 1/2 speed, my thinking is that I would need to double the size of the table. I would then want to record a new addition to the table while in this 1/2 speed mode that would make that addition jump an octave when I take it out of the 1/2 speed mode and shrink the table back to original size. I can find videos of what I'm talking about if that helps. I'll be playing around with your suggestions.

@Davian I see...... I thought there must be more to it.
Interesting.
So the overdub would then play at double speed when you re- shrink the array.... and the first recording returns to normal speed...... I think that is your idea?
David.

@whale-av That's exactly right.