I don't know how to put this, an Apple Audio HW bug? Post: 302907236

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Operating Systems OS X (Apple) I don't know how to put this, an Apple Audio HW bug? Post 302907236 by Corona688 on Thursday 26th of June 2014 05:29:12 PM

06-26-2014

Registered User

By the way, I think you can build that file in 8179 fewer loops.

Code:

printf "\x52\x49\x46\x46\x24\x00\x01\x00\x57\x41\x56\x45\x66\x6d\x74\x20\x10\x00\x00\x00\x01\x00\x01\x00\x40\x1f\x00\x00\x40\x1f\x00\x00\x01\x00\x08\x00\x64\x61\x74\x61\x00\x00\x01\x00" > /tmp/pulse.wav
printf "\xFF\xFF\x00\x00\x00\x00\x00\x00" | tee -a /tmp/pulse.wav > /tmp/0.wav
# File size doubles every loop
for ((N=0; N<13; N++))
do
        # The - causes it to print the data twice.
        tee -a /tmp/pulse.wav - < /tmp/0.wav > /tmp/1.wav
        mv /tmp/1.wav /tmp/0.wav
done

rm /tmp/0.wav

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LEARN ABOUT OPENSOLARIS

gen

MULTIMON(1)						      General Commands Manual						       MULTIMON(1)

NAME

       gen - program to generate test files of radio transmission modulation

SYNOPSIS

       gen [options] output_file

DESCRIPTION

       This manual page documents briefly the gen
       command.  This manual page was written for the Debian GNU/Linux distribution because the original program does not have a manual page.

       multimon is a program that decodes radio transmissions, gen generates modulated files suitable for decoding with multimon.

OPTIONS

       -t <type>
	      output file type (any other type than raw requires sox).
	      allowed types: raw aiff au hcom sf voc cdr dat smp wav maud vwe

       -a <ampl>
	      amplitude.

       -d <str>
	      encode DTMF string.

       -z <str>
	      encode ZVEI string.

       -s <freq>
	      encode sine of given frequency.

       -p <text>
	      encode hdlc packet using specified text.

EXAMPLE

       Create a file /tmp/message.wav containing sound samples of packet radio message:
       gen -p "This is a message." -t raw /tmp/message.wav

       To dial a number directly to the sound card output:
       gen -d 8675309

SEE ALSO

       multimon(1)

AUTHOR

       This manual page was written by A. Maitland Bottoms <bottoms@debian.org>, for the Debian GNU/Linux system (but may be used by others).

								   June 19, 2000						       MULTIMON(1)