Everything was done in Borland Turbo C for DOS, an IDE which students across the globe still use to this day for learning purposes.
Crikey, I still have those HD 3.5 inch floppy disks, 7 of them, and the manual. <shock horror>
If you want to see the code before attaching it to AudioScope I will PM it to you. Assuming I am able to attach a file.
I don't want it public just yet...
Hi guys...
Finally decided to release this, I have a python version too but that is unimportant to me.
It is a text mode "Dual_VU.sh" meter.
It actually calls dash as the interpreter but change the shebang to suit yourselves.
It uses the bell character for overload per channel and... (1 Reply)
This is a DEMO only...
Someone recently asked about creating a box to make something look nicer on screen.
I suggested that with careful colouring a 3D effect could be created...
Linux version; this also works on a Macbook Pro but is not as easy to see as the other code below:-
... (0 Replies)
Dear All,
i am trying to install the redhat linux using graphical mode...but it stucks while probing video card...i have installed linux using text mode it works fine and whole the installation goes fine. after installation if i give startx command it again stucks....looks like a vga card... (9 Replies)
Hello everyone
Had a problem booting Fedora. I installed it as a server without any desktop environment(kde, gnome) except for X. Problem is when i booting system after it loads kernel suddenly screen messes up with parts of fedora graphics(it's not clear but you can see it -... (8 Replies)
Hi All,
I used to have my suse linux(VM) server in graphic mode but not anymore since morning. I cant rolback since i loose somuch work. Any idea how to it back to normal. Thanks (6 Replies)
Hi all
I have installed solaris 5.10 and it is loading in GUI mode by default.
I want to load in text mode by default. How to do this? How to switch from GUI to text mode and vise versa.?
Please help.. (2 Replies)
hello all
I saw somewhere there is some kind of version of emacs in full text mode ?
how can I get/download it? if I have ordenry emacs installed can I start it in text mode?
thanks (2 Replies)
Hi.
I need to run old full-screen text-mode application under X-Windows. (By the way it is touch-screen calibrator firmware). The screen resolution is to be 1280x1024 exactly. The program expect text-mode geometry 80x25. Running xterm (no window manager) I have adjusted the font pararameters to... (3 Replies)
Hi people... Is there any way to configure the conection i text mode ? I need to know how to make the modem work and how to configure a dial up conection in text mode by redhat 7.1 and if possible how to configure the email...
I use the workstation installation...any help will be welcome...... (2 Replies)
JAAA(1) General Commands Manual JAAA(1)NAME
jaaa -- JACK and ALSA Audio Analyser
SYNOPSIS
jaaa [-h] [-C nchan] [-J] [-A [-ddevice] [-rrate] [-pperiod] [-nnfraqs] ]
DESCRIPTION
jaaa is an audio signal generator and spectrum analyser designed to make accurate measurements.
OPTIONS -h Show summary of options.
-C Number of channels (1..8) [4
-J Use JACK
-A Use ALSA (with following options)
-d device Alsa device [hw:0.0]
-r rate Sample frequency [48000]
-p period Period size [1024]
-n nfrag Number of fragments [2]
Either -J or -A must be given.
INTERACTIVE CONTROL
Input :
Select on of the four inputs.
Frequency and Amplitude :
These two sets of buttons set the display view. One of these six buttons, or 'Bandw', 'Peak', or 'Noise' discussed below, has an orange
LED at its left side. The LED indicates the 'currenty selected parameter' that usually can be modified in three ways :
o by typing a new value into the text widget, followed by ENTER
o by using the '<' or '>' buttons to decrement or increment,
o by mouse gestures
Frequency :
Buttons 'Min' and 'Max' set the min and max displayed frequencies. If either of these is selected then
o a horizontal Drag Left changes 'Min'
o a horizontal Drag Right changes 'Max'
Button 'Cent' is the frequency at the middle of the x-axis. Button 'Span' is 'Max' - 'Min', changing this value preserves 'Cent'. If
either of these is selected then
o a horizontal Drag Left changes 'Cent'
o a horizontal Drag Right changes 'Span'
Button 'Cent' can also be set by Clicking in the frequency axis scale.
Amplitude :
Button 'Max' is the maximum value on the y-axis. Button 'Range' is the range of the y-axis. If either of these is selected then
o a vertical Drag Left changes 'Max'
o a vertical Drag Right changes 'Range'
So for the last four mouse gestures, a Drag Left will scroll the display, while a Drag Right will zoom in or out. Maybe I will add and
automatic selection of the axis based on the direction of the mouse gesture.
Analyser :
The analyser is based on a windowed FFT. Actually the windowing is performed by convolution after the FFT, and combined with interpola-
tion. The windowing and interpolation ensure that displayed peaks will be accurate to 0.25 dB even if the peak falls between the FFT bins.
More accurate measurements can be made using the markers (see below).
Button 'Bandw' sets the FFT length, and hence the bandwidth of the analyser.
Depending on this value, the size of the display and the frequency range, you may sometimes see two traces.
This happens when the resolution of the analyser is better than the display, so that one pixel contains more than one analyser value.
In that case, the blue trace is the peak value over the frequency range represented by each pixel, and the gray one is the average value.
The first one is correct for discrete frequencies, and the latter should be used to read noise densities.
There is no mouse gesture to change the bandwidth.
Button 'VidAv' or video average, when switched on, averages the measured energy over time. This is mainly used to measure noise. The
averaging length increases over time, to a maxumum of 1000 iterations. Changing the input or bandwidth resets and restarts the averaging.
Button 'Freeze' freezes the analyser, but not the display, so you can still scroll and zoom or use the markers discussed below.
Markers :
Markers are used in order to accurately read off values in the display. There can be up to two markers, set by clicking at the desired
frequency inside the display. When there are two markers, the second one will move with each click, while the first remains fixed. Mea-
sured values for the two markers, and their difference in frequency and level are displayed in the upper left corner of the display.
Button 'Clear' clears the markers.
When 'Peak' is selected, clicking inside the display will set a marker at the nearest peak.
The exact frequency and level of the peak are found by interpolation, so the frequency can be much more accurate than the FFT step, and the
level corresponds to the true peak value regardless of display or analyser resolution.
When 'Noise' is selected, clicking inside the display will set a noise marker.
The noise density (energy per Hz) is calculated and displayed.
SEE ALSO
jackd (1)
WWW
http://www.kokkinizita.net/linuxaudio/
AUTHOR
This manual page was written by Philippe Coval rzr@gna.org for the Debian system (but may be used by others). Permission is granted to
copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by
the Free Software Foundation.
On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.
JAAA(1)
