search for: discontinous

On Wed, 2006-04-19 at 11:33 +0200, Jes?s Mori?n wrote: > Hi, im working on a voIP application. In order to reduce the traffic, > decided not to send "silence" blocks. > > Firstly i used an algorithm based on the volume to determine what is > silence, and now im using the return value of the preprocessor to > determine that. Have you tried the builting DTX

Hi, im working on a voIP application. In order to reduce the traffic, decided not to send "silence" blocks. Firstly i used an algorithm based on the volume to determine what is silence, and now im using the return value of the preprocessor to determine that. In both cases, after any not sent block, the next block of sound i send starts ok, then makes a little "pause" and

Hi AlL, I ahve this problem that my objective function is discontinous in the paramaters and I need to use methods such as nelder-mead to get around this. My question is: How do i compute standard errors to a problem that does not have a gradient? Any literature on this is greatly appreciated. Jean,

...different starting values for the nls() call but I usually end up getting the following error: Convergence failure: false convergence (8) After reading the PORT library docs, I see that this error can mean 1) gradient is calculated incorrectly 2) stopping tolerances are too tight 3) gradient is discontinous near some iterate However, since nls() usually reports the above error after 30 to 40 iterations, the PORT docs suggest that it is not problem 1. I'm not sure about (3) - I have other data which are somewhat similar to the above data, but they lead to a straightforward fit. In the end I tri...

...do decide to do things this way, decode from each of the three > streams seperately (with different decoder states) and combine them > somehow after decompression. The jump from one stream to the other will > sound poor, though, both from the cuts in the output, and also from > sending discontinous input to the decoder(s). That's the case if the files encode different speech. If it's just the same thing with different rates, it's easy to get the encoder to switch inside the same stream. Jean-Marc > Reed > > > suhaib obeidat wrote: >> Dear All, >> >...

...ent of their granulepos fields. Normal data like audio and video are thought of as 'continuous' and use the current spec of setting the page granulepos to correspond to the timestamp of the last data element decodable in that page. Other, sparse data like captions are thought of as 'discontinous' and use a different convention: the granulpos corresponds to the timestamp of the *first* data element decodable in that page. These rules arrange the stream so that the discontinous pages "fall out" of the stream in time to be useful without necessiting excessive buffering of hi...

...ually, I'm thinking about all this while writing, and it's hitting me that it should not matter whether you have partial pages or not: if you have a partial page, it means that no packets end on that page (I'm assuming the semantics of a -1 granulepos is the same for both continuous and discontinous streams here). You can therefore ignore that page for the purposes of seeking, since you couldn't make use of it to start decoding anyway. Unless you have monster packets that span pages all the time, this won't happen much anyway. Or is there a reason such pages have to be handled speciall...

Dear All, I am trying to send speech across a wireless link. I want to change which speech compression/rate to use according to some algorithm that I have. To be more specific, I have a speech file. In real time, I want to keep changing at which rate speech will be sent next. Let us say, I am considering three rates. I will take the original speech file, compress it using the three rates, which

...xt one after that to extrapolate even more. This goes on until 25 packets are missed, at which point the jitter buffer resets the decoder and stops extrapolating. > I read Munble source code (v0.3.2) to see how you do. And I found this > comment: > // Ideally, we'd like to go DTX (discontinous transmission) > // if we didn't detect speech. Unfortunately, the jitter > // buffer on the receiving end doesn't cope with that > // very well. Ah, this is a completely outdated comment, as I found a way to make it work well :) What I do, is append one bit to each speex pack...

If you do decide to do things this way, decode from each of the three streams seperately (with different decoder states) and combine them somehow after decompression. The jump from one stream to the other will sound poor, though, both from the cuts in the output, and also from sending discontinous input to the decoder(s). Reed suhaib obeidat wrote: > Dear All, > > I am trying to send speech across a wireless link. I want to change > which speech compression/rate to use according to some algorithm that I > have. > > To be more specific, I have a speech file. In re...

...this while writing, and it's > hitting me that > it should not matter whether you have partial pages or not: if you > have a > partial page, it means that no packets end on that page (I'm assuming > the semantics of a -1 granulepos is the same for both continuous and > discontinous streams here). The problem is that you can have *both* packed and continued packets on the same page, so you can have a page with the end of one packet (and thus marked with that packet's granulepos) and the start of another packet that finishes on a subsequent page. And in fact the cu...

Dear R helpers, i am using the ecdf(emp. cumulative distribution function,and am getting the following error on daily returns of stock data (about 2000 data points). I am not sure what this means, I would expect the result of the code to be 1 (the integral from -infinity to +infinity of the emp. cumulative distribution). Also when I try to integrate a smaller subset(from say 0 to 1, i get an

Greetings R users, maybe there is someone who can help me with this problem: I'm trying to fit this discontinous model : GE<-data.frame( Ci<-c(81,87,91,111,159,173,295,453,629,984), A<-c(-0.9,1.2,3.5,8.3,13.1,14.4,22.9,27.3,29.6,32.6) ) rhs <- function(Ci, Vcmax, J, Rd) { ? ?R <-0.008314472 ? ?Tleaf <-25 ? ?Kc <-exp(38.05-79.43/(R*(Tleaf+273.15))) ? ?Ko <-exp(20.30-36.38/(R*(Tleaf+273...

...ithout creating it apart from the graphic. Is there another way to solve this problem? -Some nodes are very small and labels hide them. As their size is already small, I'd like to know if there is a way of changing its position and put them outside the nodes. -Finally, I get a lot of gray and discontinous lines which I don't understand and I don't know how to remove them. Thanks in advance, Nuria. [[alternative HTML version deleted]]

Hello again, I am trying to create a color scale plotting the hydroathy index (y-axis) versus residue (x-axis) - each residue (1-100) has a value between 0-1. I've been trying to create a scale where: 0-0.499: increasing intensity of red 0.5- yellow 0.51 - 1 increasing intensity of green. THis is in lieu of a line graph. I'm not sure which type of plot to begin with - I attempted to

...n speech was not recognized (This speech probability from the preprocessor is so sweet! Thanks Jean-marc!). Yes, I know, I'm cheap on bandwidth, but that's on purpose... :( I read Munble source code (v0.3.2) to see how you do. And I found this comment: // Ideally, we'd like to go DTX (discontinous transmission) // if we didn't detect speech. Unfortunately, the jitter // buffer on the receiving end doesn't cope with that // very well. I did not implemented the jitter buffer yet, but I wonder if I should? I was thinking about holding the first few sound frames before playing them....

> The advantage of storing this in the granulepos field itself, like > theora and CMML do, is that the seek code may already understand how > to handle the back pointer. Right now everything assumes the mapping > is from 'initialized decoder' + 'granulepos from page header' => > timestamp, or in the case of theora and CMML => 'timestamp' + 'last