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Operating Systems OS X (Apple) A simple variable frequency sinewave audio generator. Post 303035893 by wisecracker on Friday 7th of June 2019 05:24:13 AM
Old 06-07-2019
Thanks MadeInGermany, I will try this out on my main code.

I limited the DEMO to 6000Hz because it kept the BYTE manipulation easy to understand using only one little endian word per sample and byterate instead of the two little endian words for both. Also 8 bits unsigned per sample, and mono eliminates the need for other sections to be altered.

As an addendum the WAV file format:

Microsoft WAVE soundfile format
 

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play(1) 						      General Commands Manual							   play(1)

NAME
play - play any sound file to audio device rec - record audio to any sound file format SYNOPSIS
play [fopts] infile [effect] rec [fopts] outfile [effect] DESCRIPTION
This manual page briefly documents the play and rec commands. play and rec are programs that allow you to play and record different types of sound files from the command line. They are front ends to the more general sox(1) package. Normally, the play command will automatically detect the type and other parameters of the soundfile. If it can't do so, the parameters can be changed through options. OPTIONS
A summary of common options are included below. For a complete description of options and their values, see the sox(1) man page. -c [channels], --channels=[channels] Define the number of channels in the file. -d [device], --device=[device] Specify a different device to play the sound file to. -f [format], --format=[format] Specify bit format of the sample. One of s, u, U, A, a, or g. -r [rate], --rate=[rate] Specify the sample rate of the audio data (samples per second). -s [size], --size=[size] Specify the width of each sample. One of b, w, l, f, d, or D. -t [type], --type=[type] Specify audio file format to use. Useful if it can not be automatically determined. -v [volume], --volume=[volume] Change the audio volume -x , --xinu Reverse the byte order of the sample (only works with 16 and 32-bit data). -h, --help Show summary of options. --version Show version of play/rec. Description of effects are described in the sox(1) man page. SEE ALSO
sox(1) soxexam(1) AUTHOR
This manual page was written by Guenter Geiger <geiger@iem.mhsg.ac.at>, for the Debian GNU/Linux system. Updates by Anonymous. December 11, 2001 play(1)
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