How do I add a random offset to values in a Pseq?

Question

Given a Pseq similar to the following:

Pseq([1, 2, 3, 4, 5, 6, 7, 8], inf)

How would I randomise the values slightly each time? That is, not just randomly alter the 8 values once at initialisation time, but have a random offset added each time a value is sent to the stream?

score 1 · Accepted Answer · answered Aug 20 '13 at 21:11

1

Here's a neat way:

(Pseq([1, 2, 3, 4, 5, 6, 7, 8], inf) + Pgauss(0, 0.1))

First you need to know that Pgauss is just a pattern that generates gaussian random numbers. You can use any other kind of pattern such as Pwhite.

Then you need to know the really pleasant bit: performing basic math operations on Patterns (as above) composes the patterns (by wrapping them in Pbinop).

answered Aug 20 '13 at 21:11

Dan Stowell

4,618
2
20
30

Oh, you put the random function *outside* the `Pseq` call. I would never have guessed that. Thank you! – David Aug 20 '13 at 22:40
It's a bit like http://en.wikipedia.org/wiki/Function_composition_%28computer_science%29 – Dan Stowell Aug 21 '13 at 13:50

How do I add a random offset to values in a Pseq?

1 Answers1