similar to: Differences between ACELP and CELP.... Reloaded

Hi All, First of all, I'm sorry if my question is offtopic on this list. In such case please ignore this post and/or contact me directly. I'm asking my questions there because I feel you had similar problem before starting developing Speex. My story: my friend developed 3gpp content creator and he would distribute it in binary form. But there is problem with AMR licensing (the terms

Hello Jean-Marc: I've been watching the speex development from its inception because I and several Tech Startup Connection members have a very important application for this voice encoding/decoding. Further, we are quite familiar with ACELP as implemented in G.729. As far as I know Speex is also ACELP ... yes/no? Question ... what do you see as the advantages of ACELP compared to MP3? I

> I've been watching the speex development from its inception because I > and several Tech Startup Connection members have a very important > application for this voice encoding/decoding. Further, we are quite > familiar with ACELP as implemented in G.729. As far as I know Speex > is also ACELP ... yes/no? No. Speex is CELP (Code-excited linear prediction), but not ACELP

Hmmm.... it's a shame.... what are the minimum requirements for Fixed Point Speex? John Villar Gerente de Proyectos Computadores Flor Hard Soft 2058 C.A. www.florhard.com Alain wrote: > Hi, no chance to run it on anything from Microchip, theyr best > processor is 16 Mips 8 bits only. For what I have been readind on this > list for more than a year you need a lot more than

>>Taddei Herve Com MD PD SWC 3 MCH 23 <herve.taddei@siemens.com><<< Wow!!! it seems that Siemens got an eye over speex ;-).... What other company is watching this closely at speex??? :-D just curious.... John Villar Gerente de Proyectos Computadores Flor Hard Soft 2058 C.A. www.florhard.com Taddei Herve Com MD PD SWC 3 MCH 23 wrote: >I will be back in the office on

CONGRATULATIONS!!!!!! :-D That's really great.... a question, does the built-in crying algorithm work properly with the de-noiser? i found that sometimes late at night (2 a.m. usually) they start to make really strange noises, someone on this thread suggested that resetting the state with a call to mother_breast_feeding() works but i haven't got it to work.... LOL..... Cheers....

Also, you would be sattisfied with the narrowband decoding because the GBA sound quality isn't very good, however, that depends greatly on what you're going to do with speex on a GBA.... (an RPG with audio dialogs? ;-)) also, using a DSP in a GBA Cartridge sounds like overkill to me, however, that depends greatly on what are you developing and what's your target audience....

Dear Jean, The source code for G.729 can be download from ITU for free. Also, some developer can do yourself as open source G.729 codec without any help. In this case each who use this codec which source code is free and open source must pay, but not to the developer. Best Regards, Miroslav Nachev JMV> Le jeudi 24 mars 2005 ? 10:08 +0000, John Villar a ?crit : >>

Le jeudi 24 mars 2005 ? 10:08 +0000, John Villar a ?crit : > Jean-Marc, that's not the definition of OpenSource, that's the > definition of "Free Software" (Libre!=Gratis) Open-Source and Free Software are basically doing the same thing for different reasons. If something isn't free software, it's not open-source either. There may be exceptions, but I have yet to

Hi all, I'm to hit about aprox the same encoding settings (ie bitrate,filesize, quality) with talk radio shows that are currently encoded with Real Producer in 16kbit acelp (maybe cs-acelp). Currently 2 hours of talk radio encoded in a .rm container yields about 16.3 meg file. With speex in wideband vbr I'm getting very good quality results, but with a larger filesize of 19.1 meg.

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Hello Jean-Marc: How many bits do you have in a frame please and what is your frame rate? For example, G.729 (ACELP) has 12 bits/frame including VAD and the frame rate is 100/second ... I'm looking for the comparable figures for SPEEX. Thank you. --- B. Mitchell Loebel, CEO, VP Engineering 408 425-9920 InstaFlash International Corporation (formerly

Hello speex-dev, Like several others who develop in Delphi I have searched for the speex.dll or speex.pas file to no avail. Its a pity that this compilation is not available as many developers use Delphi, and this codec does seem to be an excellent free alternative. Do you know if anyone has been able to contact John Villar the author of the delphi example? -- Regards, Alistair+

Hi, We would like to announce the first release of the Speex project. Speex (http://speex.sourceforge.net) is an open-source (LGPL), patent-free compression format allowing an alternative to expensive proprietary codecs. Unlike Ogg Vorbis which compresses general audio, Speex is designed especially for speech. For that reason, Speex is meant to be a complement to Vorbis. Since it is specialized

Hi, I have some questions regarding Speex. please reply as soon as possible. where are the two filter loops applied to the raw signal? where is the residue (innovation) signal calculated? where is the innovation mapped on a codebook entry (key)? which bits of a transmitted frame are the two filters, which are codebook keys? Is the codebook from the beginning on static (so already known by

Hello kind developers, I am planning on creating a steganographic extension for speex/CELP. Since speex/CELP is lossy, there should be quite many bits that one can use for hiding data. I'm familiar with the principles of CELP (two filter loops, one for pitch, the other for formants, let the raw speech frame run through those filter loops, take residue signal, map it on a codebook entry,

Thank you. You're right ... my error ... I meant to say 12 bytes (including the 2 bytes for VAD). And it is 10ms/frame. No matter ... thank you for the SPEEX specs. In terms of quality, what SPEEX bit rate compares with G.729 at 8kbps data rate please? Is there some reason why you chose the 20ms frame rate? Do you keep that same frame rate for the different bit rates? The faster frame

I was wondering how vorbis fares as a speech codec? I mean can it give similar or better quality as GSM/Toast at the same kind of bitrates/filesize? I'm not worried about streaming but I'd love to be able to create really small voice files. Can anyone give me an idea of filesize for recording time for pure speech based use? love Freya __________________________________________________

Jean-Marc, I am building a tool for producing the highest possible quality Internet interviews for "podcasting" applications. The goal is to produce a perfect recording of an interview or conference -- and giving the participants a glitch-free experience is secondary. My approach, therefore, is to build a Windows "wave" file asynchronously by using a streaming

I was posed this question: A T1 set up for voice carries 24 conversations on a circuit that is 1.544 megabits/second. Right? Well, if you set that T1 up to carry data and run a link between two IP networks over it, how many SIP conversations could it be expected to carry? How about IAX? How would one extend this calculation to varying bandwidth circuits and various VOIP protocols (MGCP,