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Looking to save a 3D spectrograph generated by SeeWave as .STL or similar in R


Looking to save a 3D spectrograph generated by SeeWave as .STL or similar in R

By : keerthana
Date : November 21 2020, 11:01 PM
I hope this helps you . The spectro3D() function uses rgl to draw the image, so you can just use rgl::writeOBJ("file.obj").
code :


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save a file generated by a php script in to a directory by save dialog form

save a file generated by a php script in to a directory by save dialog form


By : user3399061
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I have a php script that generate a pdf file. So I have an html page with jquery javascript that do an ajax call at this php script and retrieve the pdf file content. I would that this file will be saved in a location choosed by a save file dialog. , You don't need Ajax - just do a
code :
location.href = "fileURL.php";
How to convert a seewave spectrogram into a wav file

How to convert a seewave spectrogram into a wav file


By : jalal eftekhari
Date : March 29 2020, 07:55 AM
I wish this help you Turned out to be relatively simple! The important keyword that I was missing is "short-time Fourier transformation" - that is what seewave::spectro basically does. After googling for "inverse short-time Fourier transformation" the seewave function istft showed up.
code :
library(tuneR)
library(seewave)

data(tico)
#generate spectrogram with phase information
spec_tico=spectro(tico,plot=FALSE,complex=TRUE,norm=FALSE,dB=NULL,ovlp=50)
#convert back into Wave object
tico_new=istft(spec_tico$amp,f=tico@samp.rate,ovlp=50,wl=512,output = "Wave")
#play on Windows
play(tico_new)
#play on Linux with vlc (or any other player ...)
play(tico_new,player="cvlc")
#on Linux you have to kill the two vlc processES afterwards!
MATLAB, Convert 4049 rows x 50 columns of spectrograph data into 3D plot

MATLAB, Convert 4049 rows x 50 columns of spectrograph data into 3D plot


By : igauna
Date : March 29 2020, 07:55 AM
should help you out , Try substituting your 4049x50 matrix replacing my random matrix f:
code :
% t=5;
% fs = 8000;
lower = -60;
upper = 20;
f = (upper-lower).*rand(4049,50) + lower;
% s=size(f);
% h=s(1,1);
% w=s(1,2);
% rows=(0:(fs/2)/(h-1):fs/2);
% columns=(0:t/(w-1):t);
mesh(f);
colormap('jet');
colorbar;
xlabel('Time, s')
ylabel('Frequency, Hz')
zlabel('Power Spectral Density V^2/Hz')
ylim([0 4000])
zlim([-100 40])
Read a binary file *.SRS (Solar Radio Spectrograph)

Read a binary file *.SRS (Solar Radio Spectrograph)


By : Lucien Racine
Date : March 29 2020, 07:55 AM
Does that help I wanna read a binary file (K7120127.SRS) with caractristhics detailed in the word file (Documentacion SRS DATA.doc) ,2.2. chapter, that adding in the next link , Try that.
‘seewave' install error “'sndfile.h' file not found” (for R 3.2.0 under OSX Yosemite)

‘seewave' install error “'sndfile.h' file not found” (for R 3.2.0 under OSX Yosemite)


By : Ronald Comaling
Date : March 29 2020, 07:55 AM
To fix the issue you can do On linux it is sufficient to install libsndfile library, for example with
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