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----- Original Message ----- From: "Conrad Parker" <conrad at metadecks.org> To: "Vincent Burel" <vincent.burel at vb-audio.com> Cc: "Jean-Marc Valin" <jean-marc.valin at usherbrooke.ca>; <speex-dev at xiph.org> Sent: Thursday, November 13, 2008 1:18 AM Subject: Re: [Speex-dev] SPEEX on iPhone ? > 2008/11/13 Vincent Burel <vincent.burel at vb-audio.com...

...g/Decoding with SPEEX on iPhone ? 2- What parameters have been used (QUALITY, SAMPLING_RATE, BITRATE) ? and what kind of CPU load do they measure for that ? Thanks by advance, Vincent ----- Original Message ----- From: "Ashhar Farhan" <farhan at phonestack.com> To: "Vincent Burel" <vincent.burel at vb-audio.com> Cc: <speex-dev at xiph.org> Sent: Saturday, November 08, 2008 3:19 AM Subject: Re: [Speex-dev] SPEEX on iPhone ? > vincent, > someone in our team did compile it on iphone. he didn'y any particular > problems. the arm specific optimiza...

...ow how much CPU it takes for a real time encoding/decoding ? it's more around 20% or 80% instead ? Do you know if it works for 44100 Hz / 32kbps / Quality =8 ? thanks again. Vincent ----- Original Message ----- From: "Ashhar Farhan" <farhan at phonestack.com> To: "Vincent Burel" <vincent.burel at vb-audio.com> Cc: <speex-dev at xiph.org> Sent: Wednesday, November 12, 2008 3:05 AM Subject: Re: [Speex-dev] SPEEX on iPhone ? > vincent, > it should work out of the box. real time speex should work on the > iphone as it has a really fast arm cpu (and...

Why don't you just try it? From what others have been reporting, it shouldn't take you long to get it running. You can use speexenc and speexdec for testing. On Nov 12, 2008, at 2:26, "Vincent Burel" <vincent.burel at vb-audio.com> wrote: > ok, thanks for these precision, and do you have some measure about > CPU load > ? > i really would like to get a general idea about the power of the > iPhone's > ARM and know what kind of charge i can expect for a Spe...

thanks for your reply, could you explain why 44.1kHz is *not* recommended with SPEEX ? Vincent ----- Original Message ----- From: "Jean-Marc Valin" <jean-marc.valin at usherbrooke.ca> To: "Vincent Burel" <vincent.burel at vb-audio.com> Cc: "Ashhar Farhan" <farhan at phonestack.com>; <speex-dev at xiph.org> Sent: Wednesday, November 12, 2008 1:27 PM Subject: Re: [Speex-dev] SPEEX on iPhone ? > Vincent Burel a ?crit : > > ok, interesting ! > > Do you...

...multi-instances. But now i'm wondering if it's possible to port the SPEEX encoder (and decoder process) on iPhone ? Does someone tried to do that ? Do you think it is possible or completly over the capabilities of the ARM processor of the iPhone ? Thanks by advance for your reply. Vincent Burel

----- Original Message ----- From: "Alexander Chemeris" <Alexander.Chemeris at sipez.com> To: "Vincent Burel" <vincent.burel at vb-audio.com> Cc: "Conrad Parker" <conrad at metadecks.org>; <speex-dev at xiph.org>; "Jean-Marc Valin" <jean-marc.valin at usherbrooke.ca> Sent: Thursday, November 13, 2008 11:31 PM Subject: Re: [Speex-dev] SPEEX on iPhone ? &gt...

...works in realtime on even the 201mhz arm cpus). while compiling, remember to define the fixed-support support and you are all set. narrow band (8khz) and 8kbps bitrate will work very well. while you are at it, pse send the xcode project file to include in the tarball. - farhan On 11/10/08, Vincent Burel <vincent.burel at vb-audio.com> wrote: > Hello Ashhar, > > thanks for your reply, but i'm a bit surprised. > > 1- Does it mean that it is possible to make a Real Time Encoding/Decoding > with SPEEX on iPhone ? > > 2- What parameters have been used (QUALITY, SAMPLIN...

I can confirm that it will run in real time on iPhone if you compile with FIXED_POINT defined; it will also run in real time if you have FLOATING_POINT defined and disable 'Compile for Thumb' in the target's build settings in xcode. Wideband works too. Cheers, Dave

Vincent Burel a ?crit : > ok, interesting ! > Do you know how much CPU it takes for a real time encoding/decoding ? it's > more around 20% or 80% instead ? > Do you know if it works for 44100 Hz / 32kbps / Quality =8 ? Did I ever mention that 44.1kHz is *not* recommended. Usually, 16 kHz is best...

On Thu, Nov 13, 2008 at 11:23 AM, Vincent Burel <vincent.burel at vb-audio.com> wrote: >> 2008/11/13 Vincent Burel <vincent.burel at vb-audio.com>: >> > could you explain why 44.1kHz is *not* recommended with SPEEX ? >> >> my understanding is that the speex modes are tuned for particular >> sample rat...

vincent, someone in our team did compile it on iphone. he didn'y any particular problems. the arm specific optimizations are not necessary given iphone's fast cpu. just add all the speex sources to xcode's project pane and compile it. - farhan On 11/7/08, Vincent Burel <vincent.burel at vb-audio.com> wrote: > hello, > > i 've already used SPEEX in a protoype of voip application (on VC 6) and i > must says that it works well, the sound is good, and the object works well > with multi-instances. > > But now i'm wondering if it'...

On Fri, Nov 14, 2008 at 3:57 AM, Vincent Burel <vincent.burel at vb-audio.com>wrote: > > Speech compression algorithms always are tunned to particular freq, > > else they would take tons of time. That's because they use knowledge > > that speech pitch (and other params) lies in well specified regions. > > Thus...