search for: sinewaves

I'm sorry if this question has been asked before; I've looked through the archives and haven't seen anything. The problem I'm seeing is that oggenc's VBR encoding doesn't seem to pay attention to any sort of bitrate limitation, either the -m or bitrate_hard_min settings. It isn't that it temporarily dips below the minimum; the average for the whole (in this case,

Hi I have a Dell PowerEdge T310 *tower* server.. I have to buy an ups by apc... anyone could help me giving an hint ? a simple "smart ups 1000" could be enough ? thx so much!! lewis.

Hi, does anybody have any ideas regarding the easiest and most efficient way of implementing a bandpass filter in R ? any help would be truly appreciated. cheers, Pat Johnston -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or

Cyber Power Systems CP1000PFCLCD = upsc output = attached = Shutdown results = I experienced a genuine power outage shortly after setup. The 1 master system and the 1 slave system both shutdown successfully. The master shutdown before the slave (*not* a bug report; I may not have this configured correctly yet). The UPS was not powered off by the master. I don't know if the UPS

I am puzzled by a filtering problem using fft(). I don't blame R. I have a waveform y consisting of the sum of 2 sinewaves having freqs f1 and f2. I do s = fft() of y. Remove s's spike at freq=f2 Do inverse fft on s. The resulting waveform still has a lot of f2 in it! But the filtering should have removed it all. What is going on, and how to fix?? Thanks very much for any help. Bill Below is code illustrating th...

Hey everyone, My company is beginning to look at using SSD drives in our CentOS based servers. Does C5 and C6 support TRIM and other "required" functions for the SSD to operate? Thanks, Andrew Reis Microsoft Certified Technology Specialist CompTIA Network+ Networking/Systems Analyst Webmaster DBMS Inc.

I've made a large update to the introduction to compressed audio. I completely rewrote the first section, which I wasn't happy with. It now features two diagrams (worth 1000 words each!), and is broken up into a couple of sections. http://cs.leander.isd.tenet.edu/~mitchell/vorbis_intro.html I have also continued to tweak other sections based on feedback from email and this forum.

I've made a large update to the introduction to compressed audio. I completely rewrote the first section, which I wasn't happy with. It now features two diagrams (worth 1000 words each!), and is broken up into a couple of sections. http://cs.leander.isd.tenet.edu/~mitchell/vorbis_intro.html I have also continued to tweak other sections based on feedback from email and this forum.

The following creates a point process version of a sinewave (maybe there's a better way): p<-amp*cos(2*pi*freq*(1:n)/n ) + 0.5 as.numeric(runif(1:n)<p) I get something like this: 1 o oo oo o o ooooo o 0 ooo o o o o o ooo ooo In case it's not obvious, this is a noisy version of 1 ooooooo ooooooo 0 ooooooo

Hi! I just installed a new CP1000PFCLCD (Cyber Power PFC Sinewave UPS) and everything appears to be working correctly, except that I have an oddly high output voltage reading from nut. All of the other values seem consistent with what the front-panel LCD says except for this one. Is this something that needs a correction factor, or perhaps the value the driver is reading has been remapped? BTW,

I have done a fair bit of spectral analysis, and hadn't finished collecting my thoughts for a reply, so hadn't replied yet. What exactly do you mean by normalize? I have not used the functons periodogram or spectrum, however from the description for periodogram it appears that it returns the spectral density, which is already normalized by frequency, so you don't have to worry about

I have been using the following method to create L(x,t) x<-seq(1,66) time<-seq(1,19) v0<-.01 f0<-function(x,time) .45*cos(2*pi*3*x/66+v0*time) L0<-outer(x,time,f0) If I do image(L0) I get an x,t plot of a drifting cosine wave grating. The grating is actually a pattern of fuzzy bars; I have been ignoring the y dimension (because the grating is vertical: y has no effect on the

Hi All. Yesterday I was installing Centos 5.5 to my web server, and it looks like the main hard drive has gone AWOL. Fedora 12 put the file system into r/o mode. The drive is an Hitachi, still under warranty. There are bad sectors on it, and running the Hitachi DFT tool confirms this. Also I cannot repair the bad sectors. Would this be caused by a faulty I/O chip, or is it safe to say

Dear Tom, Short answer, if your using spec.pgram(), use the smoothing kernel to get a better estimate at the frequency centered in the bandwidth. If your frequency bin of interest is wider than the bandwidth of the kernel, average across frequencies (I think). The estimate appears to be normalized already. If you are calculating your PSD independently, then oversample (e.g. 2, perhaps 4 or more

After trying numerous options, I'm just about at my wits end. The most frequent suggestion was to export to a postscript or PDF file and import that into Word. However, no matter what I did or how I did it, the results were extraordinarily ugly and somewhat time-consuming. What I've tried so far: 1. Copy and paste from the R graphics output window into Word (in Mac OS X), this is

I have a CentOS-5.6 remote server in a house in Italy, where there are occasional thunder-storms. There was one yesterday, when the electricity went off 3 times, for a second or so on each occasion. My server, an HP MicroServer, came back (re-booted) on 2 of the 3 occasions, but not on the third. I assume that the problem arises because the machine does not close down properly. (Although it is