[speex-dev] XScale realtime encoding possible?

[Tony & Amanda Benik]

Hi all,

I know I replying to a post 15 day past but I've been outta it
and have just been reading from 10/12 on wards.  I have some pretty
extensive math and cs background and would be interested in creating
any fixed point taylor expantions functions in c for things like
sin(), cos(), Arcsin(), Arccos(), exp(), ln(), log().  But this
easy part has probabbly been done.

I'll be watching the posts until I have some time to dig into the
CVS.  I hope I can help be a part of speex in some way :)

--Benikus Rex

-----Original Message-----
From: owner-speex-dev at xiph.org [mailto:owner-speex-dev at xiph.org]On
Behalf Of MAL
Sent: Monday, November 10, 2003 8:21 AM
To: speex-dev at xiph.org
Subject: Re: [speex-dev] XScale realtime encoding possible?

<p>Jean-Marc Valin wrote:
>>>looks like its more like 3000 times slower. This means that all of the
>>>float operations must be removed for the code to work properly. ...or
>>>maybe there's a way to make the emulation in a library instead of making
>>>the kernel trap illegal instructions.
>>
>>Is it a long job to remove the remaining floating point ops?  Is it likely
>>to be attainable this year?  I would like to help if possible.
>
>
> I think it's attainable. Of course, it depends on how much time I have
> and how much help I get. I estimate that removing the remain float
> operation would probably take about 20-40 hours of work for the plain
> CBR (not including the VBR, VAD and all).
>
> There are also a couple things I don't like in the current port. One of
> them is that I'd like to reduce the amount of 32-bit operations (convert
> some things to 16-bit arithmetic).

Well, if I can help, I will.  I'm an able coder, but only a reasonable
mathematician :)

MAL

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