search for: melpe

Has anyone needed a coded that Asterisk does not natively support, such as MELPe or CVSD? If so, did you find a pure software solution and provided that as an addition to Asterisk? Was that solution successful? Has using an I/F card with a DSP proved to be the better solutions? We are beginners with Asterisk so any help/advice on how to best implement non-native Codecs into Ast...

...ity is very poor. This is where it gets harder for > me, as the quality is impacted by so many parts of the code. Can > anyone guess which part of the decoder is leading to such poor quality > when I cut the frame size in half? This hack works very well in > LPC10, and fairly well in MELPe. > > I've attached two outputs from speex: the decoded playback at normal > speed, and the 2X speed version. > > Thanks, > Bill >

Hi all, I'd like to know how well Speex handles multiple input streams. More specifically, if i have 4 streams that are playing at "the same time", how well does the CODEC handle switching from one stream to the next to process the audio. The reason i ask is this....My project up until now uses the MELP CODEC which didn't specifically have the ability to handle multiple

...orithms are. LPC10 and MELP allow me to speed up speech with a simple hack on the decoder frame size. Playing fewer samples per frame speeds up the speech, without effecting the excitation. It works well, but not as well as I would like. I've attached a sample of a female voice sped up with MELPe. I fully understand basic LPC10. Simply reducing the frame size in the decoder is exactly the right way to speed up LPC10 speech without changing the pitch. I would like to figure out how to apply some of the innovations in CELP to sped up speech. Frankly, this is the limit of my current knowled...

Hi folks, I am totally new to audio streaming codecs, and just looking around. Trying to figure out what else I can put on top of my very long list of projects. So a few days ago I figured out that fldigi a digimode application for Amateur Radio supports a dual 1000 Baud PSK mode. I thought "that's fast" and started looking around which sort of Data I could put into that. A

...ining excellent quality. To date, I've been playing with low bit rate LPC coding, and it works, which is very cool. However, the quality of the voices I speed up are too low. The blind will hate me if try to switch them over to these low quality voices. I've tried both basic LPC-10, and MELPe. Next, I want to try modifying Speex to see if it can generate higher quality voice at high speed. Do you think this will this be a difficult or easy project? Do you think speex can be modified to generate very high quality voice at high speed? By high speed, I mean voice starting at about 2.5X...

...ity is very poor. ?This is where it gets harder for > me, as the quality is impacted by so many parts of the code. ?Can > anyone guess which part of the decoder is leading to such poor quality > when I cut the frame size in half? ?This hack works very well in > LPC10, and fairly well in MELPe. > > I've attached two outputs from speex: the decoded playback at normal > speed, and the 2X speed version. > > Thanks, > Bill >

...it gets harder for >>> me, as the quality is impacted by so many parts of the code. ?Can >>> anyone guess which part of the decoder is leading to such poor quality >>> when I cut the frame size in half? ?This hack works very well in >>> LPC10, and fairly well in MELPe. >>> >>> I've attached two outputs from speex: the decoded playback at normal >>> speed, and the 2X speed version. >>> >>> Thanks, >>> Bill >>> >> _______________________________________________ >> Speex-dev mailing list...

.... However, the quality is very poor. This is where it gets harder for me, as the quality is impacted by so many parts of the code. Can anyone guess which part of the decoder is leading to such poor quality when I cut the frame size in half? This hack works very well in LPC10, and fairly well in MELPe. I've attached two outputs from speex: the decoded playback at normal speed, and the 2X speed version. Thanks, Bill -------------- next part -------------- A non-text attachment was scrubbed... Name: 1x.ogg Type: audio/ogg Size: 48563 bytes Desc: not available Url : http://lists.xiph.org/pipe...

.... This is where it gets harder for >> me, as the quality is impacted by so many parts of the code. Can >> anyone guess which part of the decoder is leading to such poor quality >> when I cut the frame size in half? This hack works very well in >> LPC10, and fairly well in MELPe. >> >> I've attached two outputs from speex: the decoded playback at normal >> speed, and the 2X speed version. >> >> Thanks, >> Bill >> > _______________________________________________ > Speex-dev mailing list > Speex-dev at xiph.org > htt...

We have Asterisk1.8.11 and can not move to a newer version right now. But when we run Asterisk as a service, the -r option does not result in giving the CLI prompt? Did the option to get the CLI change? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20130722/903d1851/attachment.htm>

Dave, I have been interested in some of the same questions that you have been asking. A while back I asked a person at VLSI ( http://www.vlsi.fi/ ) in Finland if they had a product that might work. The exchange of email is included below. In summary, the answer was probably no, but maybe in the future. The VS1005 chip he mentions does not seem to have appeared yet. I currently have a pair

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