search for: sinewave

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

...ion of "critical battery" (and associated beeping), which is about 2 minutes runtime remaining (I have about 36 minutes at my typical load). I don't think the UPS's critical level is adjustable. = Product link = http://www.cyberpowersystems.com/products/ups-systems/adaptive-sinewave-series/CP1000PFCLCD.html -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: CP1000PFCLCD-upsc.txt URL: <http://lists.alioth.debian.org/pipermail/nut-upsdev/attachments/20120527/48c9947b/attachment.txt>

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 t...

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.

...w to ensure the PNGs had transparent backgrounds. If they don't already, I'd appreciate some steps on how to do that. By the way, the initial sine waves were generated using some very ugly Java and then screen captured, touched up and labelled. http://cs.leander.isd.tenet.edu/~mitchell/SineWave.java -- Graham Mitchell - computer science teacher, Leander High School "REAL PROGRAMMERS don't write in BASIC. Actually, no programmers write in BASIC after reaching puberty." --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/...

...w to ensure the PNGs had transparent backgrounds. If they don't already, I'd appreciate some steps on how to do that. By the way, the initial sine waves were generated using some very ugly Java and then screen captured, touched up and labelled. http://cs.leander.isd.tenet.edu/~mitchell/SineWave.java -- Graham Mitchell - computer science teacher, Leander High School "REAL PROGRAMMERS don't write in BASIC. Actually, no programmers write in BASIC after reaching puberty." --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/...

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 o...

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 i...

...frequency as straight lines (log power vs log frequency), but would come out as curves in plots versus period. I can see how ecological studies may indeed be more interested in the periods. However, I would be wary of using the periodogram function, for if I calculate periodograms of the same sinewave but for differing lengths of the sample, the spectral density does not come out the same. All 4 of the plots produced by the code below should overlay, and yet as the time series becomes longer there appears to be an increasing offset of the magnitudes returned. (black-brown-blue-red) x0<-ts(da...

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

...frequency as straight lines (log power vs log frequency), but would come out as curves in plots versus period. I can see how ecological studies may indeed be more interested in the periods. However, I would be wary of using the periodogram function, for if I calculate periodograms of the same sinewave but for differing lengths of the sample, the spectral density does not come out the same. All 4 of the plots produced by the code below should overlay, and yet as the time series becomes longer there appears to be an increasing offset of the magnitudes returned. (black-brown-blue-red) x0<-ts(da...

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