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Re: monophonic sequencer app - feedback?

From: Alistair MacDonald <al@signedon.com>
Date: Fri, 27 Jul 2012 23:10:10 -0400
Message-ID: <CAJX8r2mgkU4OuGCt-NbJA6h8x1PJyfPnFywozOV4YKN_hNwMEQ@mail.gmail.com>
To: r baxter <baxrob@gmail.com>
Cc: olivier Thereaux <olivier.thereaux@bbc.co.uk>, public-audio@w3.org
Love this!

You should set len to 16 by default, as that syncs with your typical 4/4
time sig.

Beverly Hill's Cop anyone? :)

http://proto.blandhand.net/patr/#rate:400;len:64;seq:8,0,0,0,11,0,0,8,0,8,13,0,8,0,6,0,8,0,0,0,15,0,0,8,0,8,16,0,15,0,11,0,8,0,15,0,20,0,8,6,0,6,3,0,10,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
;


On Fri, Jul 27, 2012 at 10:37 PM, r baxter <baxrob@gmail.com> wrote:

> On Fri, Jul 27, 2012 at 3:51 AM, olivier Thereaux
> <olivier.thereaux@bbc.co.uk> wrote:
> > Very nice Roby. I like how intuitive the keyboard controls are.
> >
>
> Thanks Olivier.  Nice to know the controls seems intuitive, indeed!
>
> > You might want to limit the pace value set by the user: anywhere beyond
> 1000 gets me clicks, and eventually the app slows down to near-halt on a
> reasonably modern laptop + Chrome canary.
> >
>
> Aye, good point.  I'd mostly been working/testing with "pace" values
> under 1000.
>
> I wonder how much this is a machine/cpu capacity issue...  I realized,
> after experimenting and reflecting a bit, that my code is guaranteed
> to break with "pace" > 1406, as everything occurs within the jsNode
> buffer-frame of 2048 samples, and I'm only handling one note
> transition per buffer (so, if my math-brain is working rightly,
> 60/(bufferSize/sampleRate) is the fastest that my code will reliably
> handle note/step transitions).
>
> I think I should update it to limit the "pace" value to such.  Where
> you say "clicks, and eventually the app slows down to near-halt", is
> definitely what I get with values above 1500 or so.
>
> Thanks much,
> Rb
>
>


-- 
Alistair MacDonald
SignedOn, Inc - W3C Audio WG
Boston, MA, (707) 701-3730
al@signedon.com - http://signedon.com
Received on Saturday, 28 July 2012 03:10:38 GMT

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