06-23-2019
Nah! My in depth hobby is creating simple unusual electronics projects that create basic measuring devices for testing electronics in general and controlled by SW.
As quoted on another thread I am working on a basic Audio Function Generator all in pure POSIX shell scripting:
Sine, Square, Triangle, Sawtooth+, Sawtooth-, Pulse+, Pulse-, Noise and if possible Arbitrary from around 30Hz to 20KHz. It assumes that most sound systems can sample at 192000 sps maximum and 2000 sps minimum.
Obviously centred around this MBP, but includes ALSA - Linux and /dev/dsp for a limited CygWin version.
The waveforms generated will be pure ascii from character 32, (space), and character 126, (tilde).
But yes I am willing to pull out some background tracks if need be...
This User Gave Thanks to wisecracker For This Post:
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SPLAY(1) Applications/Sound SPLAY(1)
NAME
splay - MPEG-1,2 Audio layer 1,2,3 file player
SYNOPSIS
splay [-2VMfmrsv] [-k num] [-d dev] [-l list] [-t num] filenames...
DESCRIPTION
Splay is the sound file player such as MPEG-1,2 Audio files. And you can play these files using list file. With pthread, it can play
sound files smoother.
OPTIONS
Splay has several options.
-2 play MPEG-Audio files with half-frequency. If you use this option, you may play MPEG audio files with job which exhausts CPU very
much.
-f display info on played and remaining frames and time.
-m force to mono. Play with mono even if file is in stereo.
-r Repeat forever. If you -r with -s, list files are shuffled every time.
-s Shuffle play. If you give list file or a number of files, Splay will rearrange them randomly. And with -r every time the order of
files is changed.
-v[v[v]]
Verbose, Very verbose, Very very verbose.
-M Play MPEG file from standard input.
-V Show version number.
-t num
num of frames were saved during playing. When CPU is so busy and prevents splay from decoding, splay will play back using saved
frames. This feature lets you do other job freely while listening to MPEG music.
-k num
num of frames are skipped at the start of playing.
-d dev
Change device file. Default device file is /dev/dsp. If you can't use this device file or you can output raw type data to file, you
can use this option. If the first character of dev is / , dev would be considered as device file, If the first character of dev is
- , dev would be considered as standard output, otherwise dev would be considered as normal file.
-l list
Select list file. http:// can be used. (e.g. http://localhost/abc.m3u)
filenames
You can put several files, and use http:// If you use -l option, these will be ignored.
by Woo-jae Jung Aug 3 1997 SPLAY(1)