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From: Brad Midgley <bmidgley@xmission.com>
To: bluez-devel@lists.sourceforge.net
Subject: Re: [Bluez-devel] sbc decoder unrolled
Date: Fri, 09 Sep 2005 08:16:08 -0600	[thread overview]
Message-ID: <43219928.5050507@xmission.com> (raw)
In-Reply-To: <43217888.9030902@csr.com>

Steven,

> threshold. (For qualification, they talk about the decoder having a K
> value which needs to be greater than 14).

I had given up on regression tests for accuracy and performance because 
I didn't know about K values and I figured x86 performance might 
actually go down for fixed point (Victor confirmed this)

Google isn't helping me find much about K value this morning but I would 
like to put a regression test in the build if we find something...

> As well as measuring K, you should also listen to the outputs -
> otherwise you may have a bug that sounds bad but somehow manages to
> pass the K test.

Yes... the only thing worse than listening to the reference streams for 
the thousandth time is listening to the reference streams again with 
some new distortion introduced. I ended up encoding some music snipets 
for testing that I (used to) like to listen to :)

thanks for the input

Brad


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  reply	other threads:[~2005-09-09 14:16 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-09-09  5:37 [Bluez-devel] sbc decoder unrolled Brad Midgley
2005-09-09 11:56 ` Steven Singer
2005-09-09 14:16   ` Brad Midgley [this message]
2005-09-09 17:59   ` Brad Midgley
  -- strict thread matches above, loose matches on Subject: below --
2005-09-09  9:31 Victor Shcherbatyuk
2005-09-09 13:15 ` Brad Midgley
2005-09-09 13:56 Victor Shcherbatyuk
2005-09-09 18:13 Victor Shcherbatyuk
2005-09-09 18:46 ` Brad Midgley

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