Estoy intentando decodificar DTMF (tonos de teléfono) de mi tarjeta de sonido de Linux. Intenté usar multimon. Pero cuando ejecuto "multimon -a DTMF", como dice en la documentación, no funciona. ¿Alguien sabe cómo utilizar "multimon", o algún otro programa que funcione igual en Linux?
$ multimon -a DTMF
multimod (C) 1996/1997 by Tom Sailer HB9JNX/AE4WA
available demodulators: POCSAG512 POCSAG1200 POCSAG2400 EAS AFSK1200 AFSK2400 AFSK2400_2 HAPN4800 FSK9600 DTMF ZVEI CCIR SCOPE
Enabled demodulators: DTMF
open: No such file or directory
Cuando ejecuto "strace -e file multimon -a DTMF 2>&1 | grep ENOENT", este es el resultado:
$ strace -e file multimon -a DTMF 2>&1 | grep ENOENT
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/dev/dsp", O_RDONLY) = -1 ENOENT (No such file or directory)
Respuesta1
Finalmente, multimon-ng, que es el sucesor de multimon, funciona bien para demodular DTMF.
$ multimon-ng -a DTMF
multimon-ng 1.1.8
(C) 1996/1997 by Tom Sailer HB9JNX/AE4WA
(C) 2012-2019 by Elias Oenal
Available demodulators: POCSAG512 POCSAG1200 POCSAG2400 FLEX EAS UFSK1200 CLIPFSK FMSFSK AFSK1200 AFSK2400 AFSK2400_2 AFSK2400_3 HAPN4800 FSK9600 DTMF ZVEI1 ZVEI2 ZVEI3 DZVEI PZVEI EEA EIA CCIR MORSE_CW DUMPCSV X10 SCOPE
Enabled demodulators: DTMF
DTMF: 5
DTMF: 6
DTMF: 8