ATEST(1)                    General Commands Manual                   ATEST(1)

       atest - Decode AX.25 frames from an audio file.

       atest [ options ] wav-file-in

              wav-file-in is a WAV format audio file.

       atest is a test application which decodes AX.25 frames from an audio
       recording.  This provides an easy way to test Dire Wolf decoding
       performance much quicker than normal real-time.

       -B n   Bits / second for data.  Proper modem selected for 300, 1200,
              9600.  300 baud uses 1600/1800 Hz AFSK.  1200 (default) baud
              uses 1200/2200 Hz AFSK.  9600 baud uses K9NG/G2RUH standard.

       -D n   Divide audio sample rate by n.

       -F n   Amount of effort to try fixing frames with an invalid CRC.  0
              (default) = consider only correct frames.  1 = Try to fix only a
              single bit.  more = Try modifying more bits to get a good CRC.

       -P m   Select the demodulator type such as A, B, C, D (default for 300
              baud), E (default for 1200 baud), F, A+, B+, C+, D+, E+, F+.

       gen_packets -o test1.wav
       atest test1.wav

       gen_packets -B 300 -o test3.wav
       atest -B 300 test3.wav

       gen_packets -B 9600 -o test9.wav
       atest -B 9600 test9.wav

              This generates and decodes 3 test files with 1200, 300, and 9600
              bits per second.

       atest 02_Track_2.wav
       atest -P C+ 02_Track_2.wav
       atest -F 1 02_Track_2.wav
       atest -P C+ -F 1 02_Track_2.wav

              Try different combinations of options to find the best decoding

       More detailed information is in the pdf files in
       /usr/local/share/doc/direwolf, or possibly /usr/share/doc/direwolf,
       depending on installation location.

       Applications in this package: aclients, atest, decode_aprs, direwolf,
       gen_packets, kissutil, ll2utm, log2gpx, text2tt, tt2text, utm2ll