search for: ultrawideband

Hi List, Now I will send to you more specific what I am trying to do. I have one Asterisk Channel where receives Midia Frames in the codecs format: Speex UltraWideBand and Speex NarrowBand. When I use Speex NarrowBand the Asterisk is able to convert this frame to G711. But when I use Speex UltraWideBand the Asterisk don't convert it. Then I need in my Asterisk Channel Source include the Speex Library in resample this frame in 32KHz to 8KHz. Searching for it i...

...udio from 32 KHz to 8 KHz sample rate. 3. Run the 8KHz audio through a G711 encoder. For the narrowband case, Asterisk is doing steps 1 and 3. ----- Original Message ----- From: Thiago Maluf To: speex-dev at xiph.org Sent: Tuesday, March 17, 2009 4:59 PM Subject: [Speex-dev] Resample UltraWideBand to NarrowBand Hi List, Now I will send to you more specific what I am trying to do. I have one Asterisk Channel where receives Midia Frames in the codecs format: Speex UltraWideBand and Speex NarrowBand. When I use Speex NarrowBand the Asterisk is able to convert this frame to G711. Bu...

Hi list, I am researcher in VoIP Applications and my challenge now is convert one RTP data frame that is in 32KHz to other RTP data frame in 32KHz. Do someone help me about it? Very thanks, Thiago. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20090316/fbbaf566/attachment.htm

...ondering about the following: - On the Speex website it says: "Speex is based on CELP and is designed to compress voice at bitrates ranging from 2 to 44 kbps." while the bitrates listed here are e.g. 84400 for wideband mono. - There is almost no difference between wideband mono/stereo and ultrawideband mono/stereo Best regards, Chris --- >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...

...900, 43200, 0.6% 16000, 2, 7, 49300, 49600, 0.6% 16000, 2, 8, 57300, 57600, 0.5% 16000, 2, 9, 70100, 70400, 0.4% 16000, 2, 10, 86100, 86400, 0.3% Ultrawideband, Mono 32000, 1, 0, 8300, 8800, 5.6% 32000, 1, 1, 15100, 15200, 0.6% 32000, 1, 2, 19100, 19200, 0.5% 32000, 1, 3, 23200, 23200, 0.0% 32000, 1,...

Hi everyone, I recently began using libspeex 1.2 Beta 1 on Windows using MS Visual C++. I have gotten a decoder and an encoder to work fine from the excellent sample code posted at the website. But I face a problem. I am working on using Speex in a program to play and create audio books encoded using Speex (currently testing it only; for these tests, I do not use Ogg to save the encoded

...en; speex-dev@lists.xiph.org Subject: [SPAM] RE: [Speex-dev] Encoding audio sampled at 44.1 khz? Hi Peter, Have you considered resampling the raw 44.1kHz stereo source files using a program such as http://audacity.sourceforge.net/, say to 16kHz mono or 32kHz mono, and then using the wideband or ultrawideband speex modes to encode the result? Alternatively, if you want to programmatically do the resampling yourself, you could try the new resampling API in the svn head of speex, or the GPL library 'Secret Rabit Code'. Hope this helps, David Hogan > -----Original Message----- > From: spee...

...y Today (HTML) Jumbo! Weekly (HTML) Palm Blvd (HTML) PDAStreet (HTML) SmartPhoneToday.com Update (HTML) WindowsMobileToday (HTML) 4GuysFromRolla (HTML) Enterprise IT Planet Networking News Report (HTML) Enterprise IT Planet Security News Report (HTML) Enterprise IT Planet Storage News Report (HTML) Ultrawideband Planet (HTML) VOIP Planet Update (HTML) Wi-Fi Planet (HTML) DevX .NET Update (HTML) DevX C++ Update (HTML) DevX Database Development Update (HTML) DevX Enterprise Update (HTML) DevX Weekly Update (HTML) DevX Java Update (HTML) DevX Open Source Dev Update (HTML) DevX VB Update (HTML) DevX Web Develo...

...d a few small things that used floating point in the current version (1.1.10). In the process I discovered a few bugs (see the diff). Then I #ifdef'ed out everything that is still requires floating point including : Preprocessing, Echo cancellation, Stereo, VBR, vocoder modes, wideband and ultrawideband modes that do not use Innovation Quantitization. Approximately a quarter of the modes remain. See www.rational.co.za/speexNoFloat.csv The patch and the precomputed files are at www.rational.co.za/speex-1.1.10-NoFloat.tar.gz How do I know it does not use floating point ? I add -msoft-float to t...

Hi Peter, Have you considered resampling the raw 44.1kHz stereo source files using a program such as http://audacity.sourceforge.net/, say to 16kHz mono or 32kHz mono, and then using the wideband or ultrawideband speex modes to encode the result? Alternatively, if you want to programmatically do the resampling yourself, you could try the new resampling API in the svn head of speex, or the GPL library 'Secret Rabit Code'. Hope this helps, David Hogan > -----Original Message----- > From: spee...

hello is there a windows plug in and a linux plug in for net meeting to use speaks codes for voice chatting? there is a linux version of net meeting. thanks hank --- >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 'vorbis-request@xiph.org' containing only the word

Dear Speex developers I am going to port Speex on LPC2368 I tested Speex encoding and the mesurments shows ~40ms cpu time for one frame Do you know who ported speex to NXP or other 32bit platform? Best Regards Zohar fox -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20081105/8261e962/attachment.htm

if the new draft in the manual is used. I don't find how to tell the decoder which mode(NB/WB/UWB) is used in the encoder. The RTP header don't contain the mode field and I don't find the mode information in the coded frame either. Does this mean we have to use NB decoder in all cases? Lianghu On 11/22/06, Jean-Marc Valin <jean-marc.valin@usherbrooke.ca> wrote: > >

...h.org/pipermail/speex-dev/2006-March/004288.html > > If I get it right, the table is there: > http://www.speex.org/docs/manual/speex-manual/node10.html > Table 4: Quality versus bit-rate > > Also, this table exists for narrowband, but still it does not for > wideband or ultrawideband: it would be nice to get also those ones. I > was really lost implementing this in my SIP application. Yes, I just checked that in into svn. Will be part of the 1.2beta2 manual (expected soon). > > Examples: > > m=audio 8008 RTP/AVP 97 > a=rtpmap:97 speex/8000 &...

Thank you for the quick response Thorvald, but I think that's not the problem here :[ I know how to capture the buffer and how to play it in the output buffer of the DS. The problem is (probably) with same kind of short/floats/bytes error in conversion/copying that the coder doesn't get. I can have my buffer locked during the compression, it not the problem at the moment. What I really

There's a field in the SDP description for narrowband/wideband/ultrawideband. Jean-Marc lianghu xu wrote: > if the new draft in the manual is used. I don't find how to tell the > decoder which mode(NB/WB/UWB) is used > in the encoder. The RTP header don't contain the mode field and I don't > find the mode information in the > coded frame eit...

...like calling speex_encode() with 640 u-law samples instead of 160 floats (hey, it's the same number of bytes) to get 4x more compression! Though in this case, no IETF draft can save you :-) >>> Also, this table exists for narrowband, but still it does not for >>> wideband or ultrawideband: it would be nice to get also those ones. I >>> was really lost implementing this in my SIP application. >> >> Yes, I just checked that in into svn. Will be part of the 1.2beta2 >> manual (expected soon). > > And will you add thoses tables in the draft? Hadn't...

...t those mails: http://lists.xiph.org/pipermail/speex-dev/2006-March/004288.html If I get it right, the table is there: http://www.speex.org/docs/manual/speex-manual/node10.html Table 4: Quality versus bit-rate Also, this table exists for narrowband, but still it does not for wideband or ultrawideband: it would be nice to get also those ones. I was really lost implementing this in my SIP application. Examples: m=audio 8008 RTP/AVP 97 a=rtpmap:97 speex/8000 a=fmtp:97 mode=4 This examples illustrate an offerer that wishes to receive a Speex stream at 8000Hz, b...

...code() with 640 u-law > samples instead of 160 floats (hey, it's the same number of bytes) to > get 4x more compression! Though in this case, no IETF draft can save you :-) ;( >>>> Also, this table exists for narrowband, but still it does not for >>>> wideband or ultrawideband: it would be nice to get also those ones. I >>>> was really lost implementing this in my SIP application. >>> >>> Yes, I just checked that in into svn. Will be part of the 1.2beta2 >>> manual (expected soon). >> >> And will you add thoses tables in...

...2006-March/004288.html >> >> If I get it right, the table is there: >> http://www.speex.org/docs/manual/speex-manual/node10.html >> Table 4: Quality versus bit-rate >> >> Also, this table exists for narrowband, but still it does not for >> wideband or ultrawideband: it would be nice to get also those ones. I >> was really lost implementing this in my SIP application. > > Yes, I just checked that in into svn. Will be part of the 1.2beta2 > manual (expected soon). And will you add thoses tables in the draft? >> >> Examples: >&...