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From: vallor <vallor@cultnix.org>
Newsgroups: comp.os.linux.misc
Subject: DTMF files for Linux (or any other platform)
Date: 28 Aug 2025 00:37:23 GMT
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Hello,

I looked around for the old Sun DTMF .au files, wasn't able to find them.

However, just came across this in my installation of Zoom:

_[/opt/zoom/sip]_(vallor@lm)🐧_
$ ll
total 660
-rw-r--r-- 1 root root  30044 Aug 17 20:15 Hangup.WAV
-rw-r--r-- 1 root root  16296 Aug 17 20:15 dtmf_#.wav
-rw-r--r-- 1 root root  16296 Aug 17 20:15 dtmf_0.wav
-rw-r--r-- 1 root root  16296 Aug 17 20:15 dtmf_1.wav
-rw-r--r-- 1 root root  16296 Aug 17 20:15 dtmf_2.wav
-rw-r--r-- 1 root root  16296 Aug 17 20:15 dtmf_3.wav
-rw-r--r-- 1 root root  16296 Aug 17 20:15 dtmf_4.wav
-rw-r--r-- 1 root root  16296 Aug 17 20:15 dtmf_5.wav
-rw-r--r-- 1 root root  16296 Aug 17 20:15 dtmf_6.wav
-rw-r--r-- 1 root root  16296 Aug 17 20:15 dtmf_7.wav
-rw-r--r-- 1 root root  16296 Aug 17 20:15 dtmf_8.wav
-rw-r--r-- 1 root root  16296 Aug 17 20:15 dtmf_9.wav
-rw-r--r-- 1 root root  12392 Aug 17 20:15 dtmf_a.wav
-rwxr-xr-x 1 root root  12392 Aug 17 20:15 dtmf_dial.wav
-rw-r--r-- 1 root root  16296 Aug 17 20:15 dtmf_star.wav
-rw-r--r-- 1 root root 409666 Aug 17 20:15 ring_pstn.wav

They are:
$ file dtmf_5.wav 
dtmf_5.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, 
mono 16000 Hz

So should be able to convert them to 8-bit ulaw, if that's what you
want for your Pi experiments.

-- 
-v System76 Thelio Mega v1.1 x86_64 NVIDIA RTX 3090Ti 24G
   OS: Linux 6.16.3 D: Mint 22.1 DE: Xfce 4.18 
   NVIDIA: 580.76.05 Mem: 258G
   "A cat is a four footed allergen."