From: "Henryk Plötz" <henryk@ploetzli.ch>
To: bluez-devel@lists.sourceforge.net
Subject: Re: [Bluez-devel] more encoder stuff
Date: Fri, 26 Nov 2004 00:06:55 +0100 [thread overview]
Message-ID: <20041126000655.1a762210.henryk@ploetzli.ch> (raw)
In-Reply-To: <1101365484.7538.74.camel@pegasus>
[-- Attachment #1: Type: text/plain, Size: 1020 bytes --]
Moin,
Am Thu, 25 Nov 2004 07:51:24 +0100 schrieb Marcel Holtmann:
> The MAD library (www.underbit.com/products/mad/) is using fixed-point
> integer computation. Do you think it is possible to do the same thing
> for SBC? Will it give us some extra performance?
Unfortunately I'm not familiar with fixed-point arithmetics, especially
with how to handle multiplication. So if anyone who has done this before
would step forward ...
Well, I did some naive tests: I probably did something wrong, but I'm
not seeing any significant difference between floating point and fixed
point (that is: integer). For multiplication the difference is not
noticeable (1.38s vs. 1.36s in my test program) and for addition it is
not that big (0.77s vs. 0.47s).
I guess we'll be fine using floating point as long as there is an FPU.
--
Henryk Plötz
Grüße aus Berlin
~~~~~~~ Un-CDs, nein danke! http://www.heise.de/ct/cd-register/ ~~~~~~~
~ Help Microsoft fight software piracy: Give Linux to a friend today! ~
[-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --]
next prev parent reply other threads:[~2004-11-25 23:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-25 5:02 [Bluez-devel] more encoder stuff Brad Midgley
2004-11-25 6:02 ` Marcel Holtmann
2004-11-25 6:14 ` Henryk Plötz
2004-11-25 6:51 ` Marcel Holtmann
2004-11-25 14:35 ` Lars Grunewaldt
2004-11-25 23:06 ` Henryk Plötz [this message]
2004-11-25 23:23 ` Marcel Holtmann
2004-11-26 0:14 ` Lars Grunewaldt
2004-11-26 0:44 ` Marcel Holtmann
2004-11-26 0:57 ` Lars Grunewaldt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20041126000655.1a762210.henryk@ploetzli.ch \
--to=henryk@ploetzli.ch \
--cc=bluez-devel@lists.sourceforge.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox