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Top Forums UNIX for Beginners Questions & Answers Best OS for surveying / CAD applications Post 302991381 by wisecracker on Thursday 9th of February 2017 05:54:22 PM
Old 02-09-2017
Hi C688...
Quote:
Application designers are so starved for IO they've resorted to using the audio port for digital signals.
Terrific, I take that as a compliment for AudioScope...
It is surprising what one can do with the mic and ear port(s) as I/O. It does get seriously difficult though with only a single mono mic input instead of stereo.
Even DC measurement and variable DC output level is easy with the right knowledge through said port(s), especially using the shell...
 

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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
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