Re: [chuck-users] chuck-users Digest, Vol 62, Issue 6

Ah, thanks so much-- this is very helpful. How about "impending" ? ;) 2010/9/3

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Today's Topics:

1. Re: "Or" (David M) 2. Re: "Or" (Kassen) 3. Re: "Or" (Rebecca Fiebrink) 4. Re: "Or" (Kassen)

---------- Forwarded message ---------- From: David M To: ChucK Users Mailing List Date: Fri, 3 Sep 2010 12:02:24 -0400 Subject: Re: [chuck-users] "Or" I believe that the much simpler way is to simply use "maybe"

float sampleRate

if (maybe) 1.0 => sampleRate; else 1.5 => sampleRate

2010/9/3 Mark Cerqueira

...

Tim, You can use rand2f to do this....

float sampleRate;

if (std.rand2f(0.0, 1.0) < 0.5) 1.0 => sampleRate; else 1.5 => sampleRate;

I ran this section of code 1,000,000 times in my program doing this chunk of code every 1 sample and:

1. ChucK did not make my computer explode :) 2. The rate was set to 1.0 500,814 times and 1.5 499,186 times (pretty good distribution)

Hope that helps!

Best, Mark

On Sep 3, 2010, at 8:21 AM, Timothy Leonido wrote:

Hallo,

Once again, sorry for the rudimentary questions, but I can't seem to find the correct language for a very simple function: Instead of using Std.rand2f( ) for fluctuating volume or buf.rate, I'd like to simply have an either/or option. Play sample at a rate of 1.0 *or *1.5, randomly. The moses function (in pure data) was useful for this. Direction to the appropriate helpful would also be appreciated.

Thanks so much,

Tim _______________________________________________ chuck-users mailing list chuck-users@lists.cs.princeton.edu https://lists.cs.princeton.edu/mailman/listinfo/chuck-users

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-- David M

---------- Forwarded message ---------- From: Kassen To: ChucK Users Mailing List Date: Fri, 3 Sep 2010 18:04:34 +0200 Subject: Re: [chuck-users] "Or"

2010/9/3 Mark Cerqueira

...

Tim, You can use rand2f to do this....

float sampleRate;

if (std.rand2f(0.0, 1.0) < 0.5) 1.0 => sampleRate; else 1.5 => sampleRate;

Mark is right, his code is clean, readable and correct. It could also easily be tweaked to change the distribution.... And yet I'd still be tempted to do this;

1 + (.5 * maybe) => float sampleRate;

Generally "maybe" is my first port of call if I want to quickly and randomly choose between two options;

if (maybe) do_stuff(); else do_things();

Take Mark's option for long term projects that you will need to get back to or collaborate on. Pick my first option when livecoding as it's short to type and audiences like "maybe" as a word. My second expample might be closest to the PD object that you are missing. "maybe" resolves to "true" or "false" ("1"(int) and "0" (int) in ChucK) with 50/50 chance at each call. Practically speaking it's completely equivalent to;

Std.rand2(0,1)

However that, unlike Mark's example, can't be tuned in case you later decide you need a 25/75 distribution instead.

Yours, Kas.

---------- Forwarded message ---------- From: Rebecca Fiebrink To: chuck-users@lists.cs.Princeton.EDU Date: Fri, 3 Sep 2010 12:09:53 -0400 Subject: Re: [chuck-users] "Or" OR, because it's chuck and therefore more fun than your average language:

if (maybe) 1.0 => sampleRate; else 1.5 => sampleRate;

Message: 2 Date: Fri, 3 Sep 2010 11:21:34 -0400 From: Timothy Leonido To: chuck-users@lists.cs.princeton.edu Subject: [chuck-users] "Or" Message-ID: Content-Type: text/plain; charset="iso-8859-1"

Hallo,

Once again, sorry for the rudimentary questions, but I can't seem to find the correct language for a very simple function: Instead of using Std.rand2f( ) for fluctuating volume or buf.rate, I'd like to simply have an either/or option. Play sample at a rate of 1.0 *or *1.5, randomly. The moses function (in pure data) was useful for this. Direction to the appropriate helpful would also be appreciated.

Thanks so much,

Tim