direwolf.conf (/4 removed and rate at 48000):
```
ADEVICE0 udp:12000 null
ARATE 48000
MYCALL TEST
MODEM 300 1600:1800 7@30
```
On windows host I tried 2 different build of ffmpeg and these commands to send audio playing test.wav (gen_packet generated and atest validated):
ffmpeg -f dshow -i audio="Line 1 (Virtual Audio Cable)" -c 1 -acodec pcm_s16le -b:a 48000 -f mpegts udp://192.168.56.1:12000
ffmpeg -f dshow -i audio="Line 1 (Virtual Audio Cable)" -c 1 -acodec pcm_s16le -b:a 48000 -f wav udp://192.168.56.1:12000
Same result on direwolf:
direwolf -a 10 -t 0 -n 1 -r 48000 udp:12000
Dire Wolf version 1.7
Includes optional support for: ?hamlib cm108-ptt
Reading config file direwolf.conf
Audio input device for receive: udp:12000 ?(channel 0)
Audio out device for transmit: null ?(channel 0)
Channel 0: Demodulator + option can't be combined with multiple frequencies.
Channel 0: 300 baud, AFSK 1600 & 1800 Hz, A+, 48000 sample rate / 3.
Note: PTT not configured for channel 0. (Ignore this if using VOX.)
Ready to accept AGW client application 0 on port 8000 ...
Ready to accept KISS TCP client application 0 on port 8001 ...
ADEVICE0: Sample rate approx. 88.2 k, 0 errors, receive audio level CH0 50
ADEVICE0: Sample rate approx. 88.2 k, 0 errors, receive audio level CH0 0
ADEVICE0: Sample rate approx. 88.2 k, 0 errors, receive audio level CH0 0
