06-26-2015
AudioScope...
Boy oh boy, with only a MONO mic input to use AudioScope gets much more difficult when the ALTDC board is included.
It needs, so far, two hits at the MIC input with a single hit at the HEADPHONE audio output.
The first at the highest practical resolution for the AC component and the second for the DC component, IF any.
This means I have to record the AC component first, using the Y amp, then send a trigger pulse to a monostable to hold a relay to switch the input to the DC board AND the output of the DC board to the input of the Y amp.
Simple enough but what started out as a basic project as a learning tool for both myself and kids has turned into something that shell scripting and a(n) MBP 13" laptop using AF I/O was not designed for.
The builtin counter measures much better, on average, than my quoted 0.1% accuracy against my pro-gear here so, although it will be long-winded to use this will be used in the setting up and calibrating the 'ALTDC' board.
I will upload a block diagram of what I am aiming for in the not too distant future...
Without you big guns chipping in with your help this project would have never gotten off of the ground...
Thanks guys...
Bazza...
7 More Discussions You Might Find Interesting
1. What is on Your Mind?
Hi Admin and Staff...
Thanks for hosting AudioScope.sh on this site. I have had the biggest surprise of my life today.
This months issue of the UK Linux magazine "Linux Format" have done a small piece on the project.
Issue April 2014, LXF 182, page 65...
This I never expected and I... (1 Reply)
Discussion started by: wisecracker
1 Replies
2. OS X (Apple)
Hi all...
Has _below_ ever been done in UNIX shell scripting before?
(I have done this easily in Python but this is using purely the shell.)
The DEMO version IS built and has been tested.
Pre-amble...
I now need at least one control pulse for the AudioScope.sh when in PURELY audio I/O mode,... (2 Replies)
Discussion started by: wisecracker
2 Replies
3. Shell Programming and Scripting
Development machine:- Standard MBP 13 inch, OSX 10.7.5...
GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin11)
Copyright (C) 2007 Free Software Foundation, Inc.
Scenario:- Audio capture for AudioScope.sh for CygWin without ANY third party installs.
I am trying my hardest to get a... (6 Replies)
Discussion started by: wisecracker
6 Replies
4. OS X (Apple)
Hi guys...
Well I have entered an area of partial insnity... ;o)
Below is a photo of the 'ALTDC' board for AudioScope.sh...
I have decided to incorporate all three methods for obtaining DC into this MBP via the MIC input.
1) VFO.
2) CHOPPER.
3) COUNTER.
The controller for the COUNTER... (9 Replies)
Discussion started by: wisecracker
9 Replies
5. OS X (Apple)
Hi all...
Apologies for any typos...
For those intersted in the AudioScope the next construction is finished.
I have not been totally idle but working out the hard stuff to be able to be very simple to build.
It is a single transistor simple timer that lasts for about 1.2 to 1.8 seconds.... (2 Replies)
Discussion started by: wisecracker
2 Replies
6. UNIX for Advanced & Expert Users
Using AudioScope.sh on Ubuntu 17.04 from a live DVD disc I came across an error.
Consider the code below it is a MUCH shortened version of the KEYBOARD input in AudioScope.
#!/bin/bash
bash --version
uname -a
status=0
KEYBOARD()
{
read -r -p "Enter QUIT or EXIT to quit:- " kbinput
if ||... (11 Replies)
Discussion started by: wisecracker
11 Replies
7. OS X (Apple)
AudioScope Project.
(Apologies for any typos.)
For the few following......
AudioScope.sh...
Now at Version 0.60.00.
Well this baby has come a long way since its inception in January 2013. It is now at Version 0.60.00. It is MUCH more Apple centric now with a new OSX Sierra minimum _silent_... (7 Replies)
Discussion started by: wisecracker
7 Replies
LEARN ABOUT NETBSD
mixerctl.conf
MIXERCTL.CONF(5) BSD File Formats Manual MIXERCTL.CONF(5)
NAME
mixerctl.conf -- audio mixer configuration file
SYNOPSIS
mixerctl.conf
DESCRIPTION
The /etc/mixerctl.conf file consists of mixerctl(1) variables to set at boot time. Each line of mixerctl.conf has the following format:
variable=value
To generate a mixerctl.conf from the current mixer settings, execute:
mixerctl -a > /etc/mixerctl.conf
Set mixerctl to YES in rc.conf(5) to have the variables set at boot time. Additionally, you can have the settings saved and restored for the
devices of your choice by listing them in mixerctl_mixers in rc.conf(5).
FILES
/etc/mixerctl.conf
EXAMPLES
Example mixer settings for an esa(4) audio adapter:
outputs.master=255,255
outputs.master.mute=off
outputs.mono=255
outputs.mono.mute=on
outputs.mono.source=mixerout
outputs.headphones=255,255
outputs.headphones.mute=off
outputs.tone=255,255
inputs.speaker=255
inputs.speaker.mute=off
inputs.phone=191
inputs.phone.mute=on
inputs.mic=191
inputs.mic.mute=on
inputs.mic.preamp=off
inputs.mic.source=mic0
inputs.line=191,191
inputs.line.mute=on
inputs.cd=191,191
inputs.cd.mute=on
inputs.video=255,255
inputs.video.mute=off
inputs.aux=255,255
inputs.aux.mute=off
inputs.dac=191,191
inputs.dac.mute=off
record.source=mic
record.volume=255,255
record.volume.mute=off
record.mic=0
record.mic.mute=off
outputs.loudness=off
outputs.spatial=off
outputs.spatial.center=0
outputs.spatial.depth=0
SEE ALSO
mixerctl(1), rc.conf(5)
HISTORY
The mixerctl.conf configuration file first appeared in NetBSD 2.0.
BSD
April 5, 2003 BSD