similar to: "More than two wideband layers found. The stream is corrupted." problem

Hello all, I am experimenting with Speex in a mobile VoIP application, and it seems that it is worth stuffing more than one codec frame into a single RTP packet; mainly, that sending several frames per packet relieves the underlying network socket connection, which is notoriously problematic in mobile devices. RFC 5574 defines the exact way how to put multiple Speex frames into a single RTP

Hi Marian, I took a brief look at RFC 5574 and as far as I understand, you can simply do it like this: SpeexBits b; speex_encode(state, some320bytePCM1, &b); speex_encode(state, some320bytePCM2, &b); After that, get the encoded data with speex_bits_write and put it in your packet. Mark -----Original Message----- From: speex-dev-bounces at xiph.org [mailto:speex-dev-bounces at

Hello, just a question: Speex is in 1.2 beta 1 for some years. Is there any plan to finalize the 1.2 edition? Are there any planned improvements? Best regards Marian

Dear Speex Devs, One more problem from my side. I had earlier queried about bad quality of speex. For this run, I changed the memory mode option in CCStudio to none from large. (I will explain this if required.) Now, I am trying to run speex on C55x in real time. Find a code snippet from my main function below. Basically, I am getting the error mentioned in the subject line. Weird thing is

Jean-Marc was correct in that the 16bit value was the culprit for my encoding woes. after I changed that to a 32 bit value I believe it encodes correctly, but I really don't have much of any way to know this absolutely. I am using the 1.2beta2. I would use the enctest program, I have looked it over and based a lot of what I am doing on that code but the project I am developing this on is

Mike, Generally "Invalid mode encounterd" == "frames are misaligned" You should be getting 20 bytes from the encoder each time, and passing 20 bytes to the decoder each time. Is it correct that you have modeled your main loop after testenc-TI-c5x.c? If you look at encoded silence with a binary editor, you should be able to see the 20-byte repetition pattern. You can also

If I encode something in ultra-wideband, can I decode it in wideband by chopping off bytes in every frame? John --- >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.

Hello everyone. I would like to know which are the available bitrate using the ultra-wideband compression. Thank you! Paolo Gruppo Telecom Italia - Direzione e coordinamento di Telecom Italia S.p.A. ================================================ CONFIDENTIALITY NOTICE This message and its attachments are addressed solely to the persons above and may contain confidential information. If you

Hi, I found this list of Speex bitrates in the mail archive. http://www.xiph.org/archives/speex-dev/200306/0004.html Can somebody confirm that this list is correct? I am wondering 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

On Tue, Feb 18, 2003 at 06:09:43PM -0500, Jean-Marc Valin wrote: > Le mar 18/02/2003 ? 17:38, John Hayes a ?crit : > > If I encode something in ultra-wideband, can I decode it in wideband by > > chopping off bytes in every frame? > > All you have to do is use the --force-wb switch with speexdec. It will > decode as if the file were wideband, ignoring the ultra-wideband

It looks like I'll need to go further into the guts of speex to do this. I do, however, see some lines in nb_celp.c/nb_decode() that look interesting. I guess I'll play with it. I doubt that it will be terribly clean, though. Jean-Marc: Take a look at line 1195 in nb_celp.c (CVS). It reads "speex_warning ("More than to wideband layers found: corrupted

Is there any way to access only the narrowband portion of a wideband stream? I'd like to be able to encode the audio only once, but allow members in a conference to have some rough selection of bandwidth, and allow them to move to a lower-bitrate stream if there is a need to do so. Thanks, Matthias -- Matthias Granberry matthias@utdallas.edu (469) 371-0596 --- >8 ---- List archives:

Hi, The ITU has been churning out a series of codecs which stretch older codecs to support wideband or super wideband and stereo. Does anyone know of these things being used in the real world? They push the idea of these things offering high compatibility, as the narrowband bitstream is embedded in the wideband stream. However, I'm skeptical this offers any real world advantage.

Hello, We currently have code for sampling at 8 KHz at device layer. In order to have minimal code change while still doing wideband I am thinking of packing two 20 ms frames of the low band data as input to Wideband mode for encoding. Is this a feasible idea? I actually tried it out. Speech came out at the decoding end, but I could occasionally hear low pitched, high frequency

Hi! In a message posted on May 31 Jean-Marc wrote in a topic about AEC: > - set sampling rate to 8 kHz (at least for now) Does it mean that echo cancellation algorithm won't work in wideband mode? I can't get aec to work well in my application and I am wondering whether it's not a matter of using wideband instead of (preferred?) narrowband mode? Thanks in advance for any

Hi, Does Asterisk support wideband VoIP? Is there support for Speex 16 KHz? Thanks, Madhuri ____________________________________________________________________________________ Now that's room service! Choose from over 150,000 hotels in 45,000 destinations on Yahoo! Travel to find your fit. http://farechase.yahoo.com/promo-generic-14795097

Doing a little research before Friday's Voip Users Conference call with Dan Behringer. Are any of the newer Polycom wideband codecs implemented in v1.6? Specifically, G.722.1 or G.722.2? Thanks, Michael Graves mgraves <at> mstvp.com o(713) 861-4005 c(713) 201-1262 sip:mjgraves at mstvp.onsip.com skype mjgraves

I thought I should be getting 20 words because in the windows app the command line repeats "nbBytes = 20" through the entire decode phase. I wonder how the frames got misaligned...right now I get 10 words of data followed by 10 words of 0's which I look at through a memory window in code composer. now I am pretty sure there is a terminator word that gets in there so that would make

This Friday's edition of the weekly VoIP Users Conference call is all about wideband audio (aka HD Voice) and conferencing. The guest for this call is David Frankel, CEO of ZipDX a commercial service that specializes in wideband conferencing. We expect an interesting call touching on many aspects of VoIP going beyond the traditional phone service, conference bridges, technical standards,

I am specifically using Celt Wideband (48kHz) over WiFi multicast that naturally leads to lost packets and am trying to minimize the impact to the audio. I implemented PLC but the audio it produces is robotic. Have I implemented PLC correctly? Checking the waveform it is using the previous received waveform to fill in a missing packet but not the full waveform so it has to repeat. Basically,