HAMKit DTMF Test Sequence 0_1_2_3_4_5_6_7_8_9_#___A_B_C_D
This WAV file is a DTMF test sequence for: 0 1 2 3 4 5 6 7 8 9 # * A B C D
It maybe played on the Raspberry Pi, back into the PiHat, for testing the DTMF decoder.
File is telephone quality (8 kHz, .wav file), -1dBFS output level, 100ms per digit, 1s for a pause (space character).
Generated from http://www.audiocheck.net/audiocheck_dtmf.php