Anyone have any idea if the any of the Sharc or TigerSHARC DSPs are powerful enough to do realtime Speex? <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'speex-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
Le jeu 18/12/2003 à 22:10, Devendra Jalihal a écrit :> I don't know about SHARC. We have G.723/G.729 running on ADSP 2181 taking > approx 25 MIPS. The best reported implementation of these take 16 MIPS. > Basic speex is about 1.5 times computationally more complex > than these in the basic CELP part. Preprocessing might add a little more. > Depending on how the integerization proceeds, speexs might night > anywhere up to 40 MIPS on fixed-point DSPs. But SHARC being a floating > point DSP, is a different beast altogether.Actually, I think Speex should be about the same complexity as G.723.1. At 8 kbps with complexity 1 (default is 3), it requires around 10 mflops and once converted to fixed-point, it's around 15 MIPS (not including shifts, loop overhead and things like that). Jean-Marc -- Jean-Marc Valin, M.Sc.A., ing. jr. LABORIUS (http://www.gel.usherb.ca/laborius) Université de Sherbrooke, Québec, Canada -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 190 bytes Desc: Ceci est une partie de message numériquement signée. Url : http://lists.xiph.org/pipermail/speex-dev/attachments/20031218/59587a97/signature-0001.pgp
Tell me how fast these chips are, I'll tell you if there's a chance...
Jean-Marc
Le jeu 18/12/2003 à 16:52, David Siebert a écrit :> Anyone have any idea if the any of the Sharc or TigerSHARC DSPs are
> powerful enough to do realtime Speex?
>
>
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Jean-Marc Valin, M.Sc.A., ing. jr.
LABORIUS (http://www.gel.usherb.ca/laborius)
Université de Sherbrooke, Québec, Canada
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They claim to max out at 1,800 MFLOPs And have a clock speed of up to 300 mhz. Jean-Marc Valin wrote:>Tell me how fast these chips are, I'll tell you if there's a chance... > > Jean-Marc > >Le jeu 18/12/2003 à 16:52, David Siebert a écrit : > > >>Anyone have any idea if the any of the Sharc or TigerSHARC DSPs are >>powerful enough to do realtime Speex? >> >> >>--- >8 ---- >>List archives: http://www.xiph.org/archives/ >>Ogg project homepage: http://www.xiph.org/ogg/ >>To unsubscribe from this list, send a message to 'speex-dev-request@xiph.org' >>containing only the word 'unsubscribe' in the body. No subject is neede >> >d><p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'speex-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
I don't know about SHARC. We have G.723/G.729 running on ADSP 2181 taking approx 25 MIPS. The best reported implementation of these take 16 MIPS. Basic speex is about 1.5 times computationally more complex than these in the basic CELP part. Preprocessing might add a little more. Depending on how the integerization proceeds, speexs might night anywhere up to 40 MIPS on fixed-point DSPs. But SHARC being a floating point DSP, is a different beast altogether. Devendra Jalihal <p>On Thu, 18 Dec 2003, David Siebert wrote:> Anyone have any idea if the any of the Sharc or TigerSHARC DSPs are > powerful enough to do realtime Speex? > > > --- >8 ---- > List archives: http://www.xiph.org/archives/ > Ogg project homepage: http://www.xiph.org/ogg/ > To unsubscribe from this list, send a message to 'speex-dev-request@xiph.org' > containing only the word 'unsubscribe' in the body. No subject is needed. > Unsubscribe messages sent to the list will be ignored/filtered. >--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'speex-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.