Well a major hurdle is now overcome, and with this major hurdle a major version increase too.
It is extremely difficult to do automatic external range switching from a MONO mic input and STEREO earphone outputs, (it is possible however).
I have instead decided upon a simpler way, manually alter the amplifier hardware to the required volts per division and then enter the range from the 'COMMAND:-' window.
(Although nothing will happen this will _work_ in DEMO mode too.)
This setting is NOT saved in the AudioScope.config file and will always re-start in 'Uncalibrated' vertical axis mode.
AudioScope.sh can now be calibrated in the vertical axis but only in the AC condition.
It can now be considered finshed for the AC mode from around 100Hz to 10KHz or within the limits of the microphone audio input passband.
The full details are now in the manual, coding is already catered for and the AudioScope.manual is now AC complete - hopefully... ;o)
AudioScope.sh, AudioScope.config and AudioScope.manual are now saved inside the '$HOME' directory. The remaining files, all 21 of them are saved in the '/tmp/' directory.
The image is in DEMO mode with a pseudo-Voltage range of 100mV per division...
Stats so far...
# Total Lines=4204.
# Blank Lines=29.
# Code Lines=1986.
# Comments=2189, (including the builtin Manual).
# Filesize=175684 bytes.
Your script still has the printf bug, you should do printf "%s" "stuff" whenever the input is a variable. You also use unquoted strings in a number of places.
As you consider your script a teaching script, it is really doing people a disservice to teach them these bad habits, and the longer you put off fixing it, the harder it will be to do.
In addition you can do the following (double-)optimization
Code:
printf '#!/bin/bash
data="\\\\xFF\\\\xFF\\\\xFF\\\\xFF\\\\x00\\\\x00\\\\x00\\\\x00"
for waveform in {0..8191}
do
printf "$data"
done > /tmp/squarewave.raw
while true
do
/full/path/to/sox/play -b 8 -r 8000 -e unsigned-integer /tmp/squarewave.raw
read -r -p "Press ENTER to rerun OR Ctrl-C to quit:- " -e kbinput
done
' > /tmp/VERT_SOX.sh
There are things that are now broken due to OS changes over the years.
I am NOT going to chase these as the code IS licenced as CC0 and you can do it for yourselves.
These are the ones I know about.
1) As of Windows 10, 'SoundRecorder.exe' no longer exists and is now called 'Voice Recorder'. I have
no idea if it can run in the background as I do NOT intend to take CygWin(64) any further. So consider
WINSOUND capture unavailable beyond Windows 8.1. CygWin(64) still has /dev/dsp so that is the ONLY real
capture mode available. SOX in CygWin(64) is not, and has never been, catered for.
2) 'xterm' is now deeply hidden inside OSX 10.11.x and is not in the path when called, this also
applies to some current Linux flavours and requires an xterm install for correct running of the code.
I do not intend to check for availablity as usually a second computer is required for calibration due
to crosstalk using the same computer for both Input and Output down the same socket.
3) QuickTime Player is broken as of OSX 10.10.x and above so OSX107MBP background capture mode is no
longer available. I have tried to solve it but cannot get it to work. ;o(
There are still changes to do to the script to remove old legacy stuff and use current techniques and
they will be changed in due course.
There are 24 files including AudioScope.sh itself created during program run. Most are not used in normal
running but are needed for calibration and test purposes, these are the files and their sizes, extracted
from the AudioScope.Manual...
Code:
# Files saved to the "/tmp/" directory.
#
# -rw-r--r-- 1 barrywalker wheel 48000 4 Aug 21:06 0000000000.BIN
# -rwxr--r-- 1 barrywalker wheel 508 4 Aug 21:06 1KHz-Test.sh
# -rwxr-xr-x 1 barrywalker wheel 293 4 Aug 21:08 Arduino_9600.pde
# -rw-r--r-- 1 barrywalker wheel 253 4 Aug 21:06 VERT_BAT.BAT
# -rw-r--r-- 1 barrywalker wheel 303 4 Aug 21:06 VERT_DSP.sh
# -rw-r--r-- 1 barrywalker wheel 344 4 Aug 21:06 VERT_SOX.sh
# -rw-r--r-- 1 barrywalker wheel 1 4 Aug 21:06 dcdata.raw
# -rw-r--r-- 1 barrywalker wheel 65580 4 Aug 21:06 pulse.wav
# -rw-r--r-- 1 barrywalker wheel 65580 4 Aug 21:06 pulse1.wav
# -rwxr-xr-x 1 barrywalker wheel 107 4 Aug 21:07 pulsetest.sh
# -rw-r--r-- 1 barrywalker wheel 48000 4 Aug 21:06 sample.raw
# -rw-r--r-- 1 barrywalker wheel 680000 4 Aug 21:06 signed16bit.txt
# -rw-r--r-- 1 barrywalker wheel 65536 4 Aug 21:06 sinewave.raw
# -rw-r--r-- 1 barrywalker wheel 65580 4 Aug 21:06 sinewave.wav
# -rw-r--r-- 1 barrywalker wheel 8000 4 Aug 21:06 squarewave.raw
# -rw-r--r-- 1 barrywalker wheel 65096 4 Aug 21:07 sweep.raw
# -rw-r--r-- 1 barrywalker wheel 65140 4 Aug 21:07 sweep.wav
# -rw-r--r-- 1 barrywalker wheel 32548 4 Aug 21:07 sweeper.raw
# -rw-r--r-- 1 barrywalker wheel 8000 4 Aug 21:06 symmetricalwave.raw
# -rw-r--r-- 1 barrywalker wheel 48000 4 Aug 21:07 waveform.raw
# -rw-r--r-- 1 barrywalker wheel 65580 4 Aug 21:06 waveform.wav
#
# Files saved in the "$HOME" directory.
#
# -rw-r--r-- 1 barrywalker staff xxxxxx 4 Aug 20:54 AudioScope.Manual
# -rw-r--r-- 1 barrywalker staff 294 4 Aug 20:54 AudioScope.config
# -rwxr-xr-x 1 barrywalker staff xxxxxx 4 Aug 20:54 AudioScope.sh
# File size "xxxxxx" means it will get bigger as the project progresses.
#
# "dcdata.raw" will always be one byte in size.
#
# "Arduino_9600.pde" will only be FULLY generated when the Arduino Diecimila
# Board is detected. Otherwise one byte in size.
#
# "pulsetest.sh" will only be FULLY generated in "DEMO" and "/dev/dsp" modes,
# from the "POLARITY" command for CygWin(64) and some Linux flavours. Otherwise
# one byte in size.
#
# "signed16bit.txt" will only be FULLY generated in "CygWin" mode using Windows
# "SoundRecorder.exe" in quiet mode, otherwise one byte in size.
# (See Preface:- for more information.)
#
# These are all of the current files generated for the AudioScope.sh project.
# They are needed in conjunction with home built calibration hardware to
# calibrate this project. AudioScope.sh itself MUST always be in your
# "$HOME" drawer\directory\folder.
The stats for the script so far:-
# Total Lines=4253.
# Blank Lines=29.
# Code Lines=1989.
# Comments=2235, (including the builtin Manual).
# Filesize=180552 bytes.
Enjoy thinking and doing things for yourselves instead of adapting existing technology.
As usual if you download the file, place it in your $HOME darwer and rename to AudioScope.sh, and change your permissions.
AudioScope.sh is now MUCH more OSX centric and at Version 0.60.00.
It now uses a _silent_ QuickTime Player capture mode that works FROM OSX 10.12.x Sierra as a minimum. It will have no more testing on CygWin and only limited Linux testing.
It is being continued inside the OSX forum, as a follow on, here:-
Hi all...
Well I have not been inactive but working out how to make OSX 10.14.x command line audio player have a variable sample rate.
This is a back door as afplay does not have a sample rate flag unlike aplay for ALSA, in Linux flavours.
This is a DEMO only but a derivative of it will... (2 Replies)
Hi,
I want 10000+ unique Audio file of approx 2MB each. How can i generate numerous audio files using shell script. Any tool, command or suggestions are welcome.
If i give one audio seed file then can we create numerous unique files with same seed file?
Any help is highly appreciable.... (11 Replies)
This site is the first to get this snippet.
It will capture an audio recording of any time length within the limits of OSX's QuickTime Player's capablility...
A shell script derivative of this will be used as a further capture for CygWin's AudioScope.sh.
Thoroughly read ALL the comments in... (0 Replies)
Hi,
Pleasse could someone advise why i'm getting this error below - No such file or directory
dev6:$ ls -ltr ReleaseManagement.sh
-rwxr-xr-x 1 dev fix 4830 Aug 22 11:13 ReleaseManagement.sh
dev6:$ ./ReleaseManagement.sh
: No such file or directory
dev6:$
thank you (2 Replies)
The scope of the shell/perl script is to read the input text file. Validate the expiry date of each certificate and send the mail to the user. The user takes action to add the new certificate to the storage file and user owns the responsibility to update the input text file with the new certificate... (5 Replies)
Hi All,
I would like to develop a shell script for stop & start an application server (1-4) on Solaris box. Here are the user requirements for this task.
1. User will input the option which server they wish to stop.
2. Will clear cache files from specific location.
3. ... (1 Reply)
hi all,
i'm using the following script,
Status=1
Function_do ()
{
while read line;
do
if ; then
#echo $line
if ; then
Status=0
echo " LINKINK ERROR "
fi
fi
done < ldd.log
}
Function_do (4 Replies)
Hi,
I am new to unix and using linux 7.2. I would like to create a script that would make it easyer for me to run my java programms. At the moment I have to type java myJavaprogram
I am trying to write a script that will allow me to type something like this "myscript myJavaprogram" or maybe... (4 Replies)
Hi,
I am stuck while developing a shell sub-routine which checks the log file for "success" or "failure". The subroutine reads the log file and checks for key word "success", if found it set the variable (found=1). It returns success or failure based on this variable.
My problem is, I can... (2 Replies)
05-13-2016
