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add scripts/beep-wigfrid

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This commit is contained in:
Michele Guerini Rocco 2019-08-29 11:09:05 +02:00
parent a9cc955b29
commit d8967e18c2
Signed by: rnhmjoj
GPG Key ID: BFBAF4C975F76450
1 changed files with 8 additions and 0 deletions
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scripts/beep-wigfrid Executable file
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@ -0,0 +1,8 @@
#!/bin/sh
head -c 4 /dev/urandom | \
hexdump -v -e '/1 "%u\n"' | \
awk '{ split("0,3,5,6,7,10,12",a,","); \
for (i = 0; i < 1; i+= 0.00011) \
printf("%08X\n", 40*sin(450*exp((a[$1 % 8]/12)*log(2))*i)) }' | \
xxd -r -p | \
aplay -c 2 -f S16_LE -r 48000 -Dplug:hdmi1