similar to: Frequency and Phase Spectrograms

I have had a strange problem with rgl. I am currently switching from a desktop computer to a workstation. When I get a very large data set and run spectro3D, the computations run then the window with the 3d plot appears it doesn't show the data inside and immediately shuts down R. The computers have OpenGL on them, but a colleague suspects the configuration of rgl with OpenGL may be the

Hi guys, as MP3 and Opus have very similar objectives, I think the original poster's question was a valid one: Why does Opus have more artefacts in the lower frequency ranges than MP3 has? The spontaneous suspect that lower frequency artefacts may be more noticeably than higher frequency artefacts seems plausible, also. Is it a matter of energy (which is higher for higher frequencies)? When

Hi, I need to plot spectrogram of a waveform.What package offers this? -- Rajesh.J [[alternative HTML version deleted]]

I'm trying to create a 3D plot using wireframe with certain parts removed. I would like to get rid of the part of the outer cube that crosses over the plot leaving the back two walls and the axes. It would also be useful to put lines in the plot separate from the wireframe call. I've looked through the documentation and have not been able to find such a request. Here is my code

> Why are you using a stereo file > containing the same sweep in both channels > and then downmixing to mono? When I first tried encoding at a higher bitrate, I needed to test the different behavior of the "mid" (l+r) and "side" (l-r) channels. That's why I made the first sweep identical on both the left and the right channel (i.e. "side" is silent)

On Aug 07 22:04:21, petrparizek2000 at yahoo.com wrote: > > The encoded opus file is 48kHz, > > so how would the output wav be resampled from 16kHz? To be clear: did you mean the opus output of opusenc or the wav output of opusdec? > > What are those "clear signs" exactly? > > The things that I can hear while listening at 1/2 or even 1/4 of the > original

On Aug 07 08:30:31, hans at stare.cz wrote: > On Aug 07 00:41:52, petrparizek2000 at yahoo.com wrote: > > ????#1. To test encoding at low bitrates, I encoded a sine sweep at 12 kbps > > with Opusenc and then decoded the resulting file with Opusdec. > 1) Opusenc --bitrate 12 --downmix-mono Sweep50.wav Sweep50.opus Why are you using a stereo file containing the same sweep in both

Hello. Me again. Have you tried to encode piano solo? Noticed high bitrate Opus gave? And there's also artefact at 15kHz which wasn't in the original audio. Visible with Spek program. Download FLAC and Opus both files, new link: http://www.filedropper.com/example_3 FLAC full: 1084 kbps; FLAC solo: 465 kbps. with --bitrate 160: Opus full: 158 kbps; Opus solo: 190 kbps. Included also Spek

Jean-Mark sarkasm. Jean-Markasm. (Bonus points for providing an actual noisy WAV! ^_^) On 30/10/2017 20:28, Jean-Marc Valin wrote: Hi, Before I comment on the graphics you posted to visualize the difference between two audio signals, I'd like to ask for your help in evaluating my JPEG encoder. I've encoded an image with JPEG and then computed the difference with the original. I then

On 10/31/2017 07:08 PM, Ulrich Windl wrote: > as MP3 and Opus have very similar objectives, I think the original poster's > question was a valid one: Why does Opus have more artefacts in the lower > frequency ranges than MP3 has? I'm not sure, but my best guess would be "because MP3's window is very leaky and MP3 has to waste a lot of bits in the LF because of

Using the following MATLAB snippet: fnames={'chirp','perfect','block','filter'} for k=1:length(fnames) fn=fnames{k}; myfile=fopen([fn, '.fl'], 'r', 'ieee-le'); x=fread(myfile, Inf, 'float32', 0, 'ieee-le'); fclose(myfile); X=specgram(x,2048,1,kaiser(2048,14)); spectrogram_floor=-96;

Just to be clear, my goal here wasn't to make fun of anyone, but to drive the point that spectrograms should *never* be used to demonstrate quality. The only case where they can sometimes be useful is for diagnostic purposes. If you hear something and you're not sure what you're hearing exactly, then sometimes a spectrogram can help you figure out what it is. That's pretty much it.

On 2017-11-01, Jean-Marc Valin wrote: > I'm not sure, but my best guess would be "because MP3's window is very > leaky and MP3 has to waste a lot of bits in the LF because of that". > It could also be just the MP3 encoder being silly, or other things. Was the original poster speaking about the SILK or the CELT derived mode? Because at least wrt SILK (and the rest of

Hey guys, I am dealing with this kind of data. To read the file in R I have nulled all empty fields and tried: date BRENT BRENTchg HWWI HWWIchg Jan. 86 22,5 NULL 68,1 -15,6 Feb.86 17 NULL 64,9 -21,6 Mar. 86 13,7 NULL 66,6 -19,5 Apr.86 12,3 NULL 63,6 -19,1 May 86 14 NULL 61,5 -20,9 June 86 11,8 NULL 59,8 -20,7 July 86 9,4 NULL 57,2 -19,3 Aug.86 13,2 NULL 55,5 -18,3 Sep.86 14,2 NULL 57,5 -15,1

https://bugzilla.mindrot.org/show_bug.cgi?id=2573 Bug ID: 2573 Summary: dead sessions cannot be closed with ~. Product: Portable OpenSSH Version: 3.7.1p2 Hardware: Other OS: Linux Status: NEW Severity: normal Priority: P5 Component: ssh Assignee: unassigned-bugs at mindrot.org

I'm more like a caveman when it comes to programming tools. So, with that in mind, is there a way to use readBin in a batch format to read in pieces of a large binary file? Thank you for the consideration of my question. Todd Remund

I am looking for a fast way to count the number of rows in a matrix are identical to a pattern vector. For example, if I am interested in counting the number of row vectors in a matrix that are identical to (1,2,3) what would I do? I have tried the identical statement in a loop but this is far too slow. I have a very large matrix and need to avoid loops at all costs. Thanks for any help.

I am looking for a Kalman filter that can handle a control input. I thought that l.SS was suitable however, I can't get it to work, and wonder if I am not using the right function. What I want is a Kalman filter that accepts exogenous inputs where the input is found using the algebraic Ricatti equation solution to a penalty function. If K is the gain matrix then the exogenous input

On Mon, Nov 5, 2018 at 11:01 AM Jan Stary <hans at stare.cz> wrote: Attached I send the spectrogram (vic SoX) of the first 20 seconds > for the wav file and the opus file. Indeed, there is extra noise > for the low frequencies, but somewhere around -100 dB. > > Jan > That might be entirely due to SoX treating it as a 16-bit file, which it is not; -100dB is almost

I have obtained from transfer functions, the state space matrices for the following state space model. x* = Ax + Bu y = Cx + Du I have A, B, C, and D, now I would like to take the exogenous inputs and simulate the data using the state space model. I know there is a simulate function in the package dse1, but I am unsure as to what type of TSmodel to create to put into it. Could anyone give me