From: Marcel Holtmann <marcel@holtmann.org>
To: Christian Hoene <hoene@uni-tuebingen.de>
Cc: 'Siarhei Siamashka' <siarhei.siamashka@nokia.com>,
linux-bluetooth@vger.kernel.org
Subject: RE: [PATCH] sbc: bitstream packing optimization for encoder.
Date: Fri, 12 Dec 2008 16:56:56 +0100 [thread overview]
Message-ID: <1229097416.22285.101.camel@violet.holtmann.net> (raw)
In-Reply-To: <00cc01c95c71$2b663c30$8232b490$@de>
Hi Christian,
> > > The sound quality of the fix point implementation still remains below
> > of the
> > > quality of the floating point version.
> > >
> > > Maybe, we shall support both depending on the performance
> > requirements?
> >
> > I think we should focus a fixed point version. There should be no need
> > for floating point at all. If fixed point isn't good enough, then we
> > screwed it up.
> >
> > And in case of embedded devices we are seriously limited with floating
> > point and doing that in software just doesn't work out. And this is
> > mostly not directly a performance problem. It is more a power
> > consumption problem. We don't wanna have A2DP drain the battery.
> >
>
> It would help if we use 64 bit integers if a good sound is required but this
> is again a problem for embedded devices.
depends on. Looking at the libmad library, they do a pretty good job in
just using integers.
Regards
Marcel
next prev parent reply other threads:[~2008-12-12 15:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-11 20:27 [PATCH] sbc: bitstream packing optimization for encoder Siarhei Siamashka
2008-12-12 1:39 ` Marcel Holtmann
2008-12-12 9:37 ` Siarhei Siamashka
2008-12-12 11:04 ` Marcel Holtmann
2008-12-12 15:23 ` Christian Hoene
2008-12-12 15:30 ` Marcel Holtmann
2008-12-12 15:49 ` Christian Hoene
2008-12-12 15:56 ` Marcel Holtmann [this message]
2008-12-12 16:01 ` Siarhei Siamashka
2008-12-17 14:16 ` Siarhei Siamashka
2008-12-12 16:07 ` Siarhei Siamashka
2008-12-16 21:46 ` Siarhei Siamashka
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