search for: leonardi

...B) R>b <- solve(t(X) %*% X) %*% t(X) %*% Y R>b [,1] (Intercept) 23.52957 A1 12.65066 Bb 22.97658 Bc 39.45485 Thank you in advance for any suggestion. Stefano -- ====================================================================== Stefano Leonardi Dipartimento di Scienze Ambientali Universita` di Parma stefano.leonardi at unipr.it Viale Usberti 11a Phone : +39-0521-905659 43100 PARMA (Italy) Fax : +39-0521-905402

...ot show any problem, e.g.: a<-list.files() for (x in a) { u<-read.csv(x, header=T, sep=",", check.names=FALSE) } h<-u[,2] I would appreciate any suggestion or pointer to solve the problem or to do the same thing in a different way. Thanks for your consideration -- Michela Leonardi

...g like: weight=varFixed(~ 1/vector_of_errors_of_parameter) approach. Am I out of my mind completely? or am I on a more or less right direction? Thank you very much to whoever tries to answer this question. Stefano -- ====================================================================== Stefano Leonardi Dipartimento di Scienze Ambientali Universita` di Parma E-mail: stefano.leonardi _at_ unipr.it Parco Area delle Scienze 11a Phone : +39-0521-905659 43100 PARMA (Italy) Fax : +39-0521-905402

Thanks for the answer. So data are stored in little-endian format on the WAVE file. But have I to encode in big endian format or little endian is ok?! Thanks ---------- Original Message ---------------------------------- From: "John Miles" <jmiles@pop.net> Date: Tue, 23 May 2006 12:15:05 -0700 >You are probably reading little-endian samples on a big-endian platform, and

Hi! Is it possible to encode at a rate of 2Kbps? Because the best performance I achieved is 2.4 kbps.. thanks cheers

...to encode at 2Kbps.. are there other free codecs expecially projected for very-low but rate? ---------- Original Message ---------------------------------- From: Jean-Marc Valin <Jean-Marc.Valin@USherbrooke.ca> Date: Tue, 30 May 2006 00:51:25 +1000 >Le lundi 29 mai 2006 ? 16:45 +0200, Leonardi Andrea a ?crit : >> Hi! >> Is it possible to encode at a rate of 2Kbps? Because the best performance I achieved is 2.4 kbps.. > >The nominal rate is 2.15 kbps, which means 2.4 kbps if you pack whole >bytes. Note that this mode has really low quality and I usually don't >...

Hi to everyone. I'm using speex in an application at the minimum bit rate (2.15 kbps), setting the encoder quality at 0, but obviously the quality is terrible. My question is: there are some signal processing that I can do to improve the quality of the signal at very low bit rate? Or can you tell me other codec that works well at that rate? Thank you.

...the >underlying technology these days (it's not Voxware anymore), but they do >have solutions that work in the 1200-2900 bps range. > >-- john > >> -----Original Message----- >> From: speex-dev-bounces@xiph.org [mailto:speex-dev-bounces@xiph.org]On >> Behalf Of Leonardi Andrea >> Sent: Monday, June 19, 2006 9:55 AM >> To: speex-dev@xiph.org >> Subject: [Speex-dev] codec at very low bit rate (2 kbps) >> >> >> Hi to everyone. >> I'm using speex in an application at the minimum bit rate (2.15 >> kbps), setting the e...

...at page 5 the phrase "If more than one channel is used, then an instance is required for each channel (Speex is not stateless)". What does it mean? Could it be that is the problem that I've met? Thanks Andrea ---------- Original Message ---------------------------------- From: "Leonardi Andrea" <andrea.tn@quipo.it> Reply-To: andrea.tn@quipo.it Date: Tue, 4 Jul 2006 14:53:39 +0200 > Hi Folks! >I'm using Speex in my program, to develope a program that makes use of a multiple descriptions concept to encode and decode a WAVE file.. and here I have the problems:...

Hi, I'm trying to encode a raw audio file with speex. No problem if I normally decode it (as done in the samplenc.c, for example). But if I separate odd and even samples and I try to encode separately these two files (one is [odd odd odd odd..], the other [even even even even..], then when I decode and I join the samples in one file [odd even odd even odd even..] I heard a terrible white