AudioScope...


 
Thread Tools Search this Thread
The Lounge What is on Your Mind? AudioScope...
# 1  
Old 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...
Login or Register to Ask a Question

Previous Thread | Next Thread

7 More Discussions You Might Find Interesting

1. OS X (Apple)

AudioScope Project.

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

2. UNIX for Advanced & Expert Users

Has AudioScope found a bug in bash 4.4.5?

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

3. OS X (Apple)

The DC Control and Timer boards for AudioScope.sh...

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

4. OS X (Apple)

The Alternate DC board for AudioScope.sh.

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. Shell Programming and Scripting

Experimental awk audio converter for CygWin and AudioScope.sh

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

6. OS X (Apple)

AC to DC trigger pulse for AudioScope.sh.

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

7. What is on Your Mind?

AudioScope has had a magazine review. <shock>

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
Login or Register to Ask a Question
AURECORD(1)						      General Commands Manual						       AURECORD(1)

NAME
aurecord - record a sound file from a Network Audio System server SYNOPSIS
aurecord [-audio servername] [-file format] [-data format] [-rate sample rate] [-mode input mode] [-gain input gain] [-time seconds] [-com- ment comment] [-?] filename DESCRIPTION
The aurecord program can be used to record audio data from a Network Audio System server into a file. The recording will continue until either the specified time has elapsed or aurecord receives a SIGINT or SIGTERM signal. OPTIONS
The following options may be used with the aurecord program: -audio servername The Network Audio System server from which the file should be recorded. -file format The file format to be used for the recorded audio data. The -? option will display a list of valid file formats. The default file format is Sun/NeXT. -data format The data format to be used for the recorded audio data. The -? option will display a list of valid data formats. Note that each file format may only support selected data formats. The default data format is 8-bit uLAW. -rate sample rate The sampling rate (in hertz) for the recording. The default rate is 8000 Hz. -mode input mode Some Network Audio System servers may have different input amplification modes for microphone input versus line level input. This option allows the amplification mode to be specified. The two modes available are "mic" for microphone input and "line" for line level input. The default mode is "mic". -gain input gain The input gain level in percent. The default is 75%. -time seconds The time, in seconds, for the recording. If this option is not used, aurecord will record until a SIGINT or SIGTERM signal is received. -comment comment A comment to be stored in the data file. -? Displays a usage message and a list of supported file and data formats. SEE ALSO
nas(1) COPYRIGHT
Copyright 1993, 1994 Network Computing Devices, Inc. AUTHOR
Greg Renda, Network Computing Devices, Inc. 1.9.3 AURECORD(1)