tSIP: local keypad DTMFs with sox

This script (for "on dial" event, added in tSIP 0.1.58) generates local audible DTMF feedback for keypad buttons and when entering number directly into main number edit.

local key = GetExecSourceId(); -- holds key code
local file
if key == string.byte("1",1) then
	file = '1.wav' 
elseif key == string.byte("2",1) then
	file = '2.wav'
elseif key == string.byte("3",1) then
	file = '3.wav'
elseif key == string.byte("4",1) then
	file = '4.wav'
elseif key == string.byte("5",1) then
	file = '5.wav'
elseif key == string.byte("6",1) then
	file = '6.wav'
elseif key == string.byte("7",1) then
	file = '7.wav'
elseif key == string.byte("8",1) then
	file = '8.wav'
elseif key == string.byte("9",1) then
	file = '9.wav'
elseif key == string.byte("0",1) then
	file = '0.wav'
elseif key == string.byte("*",1) then
	file = 'star.wav'
elseif key == string.byte("#",1) then
	file = 'hash.wav'
elseif key == string.byte("A",1) then
	file = 'A.wav'
elseif key == string.byte("B",1) then
	file = 'B.wav'
elseif key == string.byte("C",1) then
	file = 'C.wav'
elseif key == string.byte("D",1) then
	file = 'D.wav'
else
	-- print(string.format("on_dial.lua: no wav file to play for key code [%d]\n", key))
	return
end
-- add directory containing actual files
file = 'sox\\' .. file
-- specify audio device to be used, e.g. \"USB Phone\" or \"SPDIF Interface\"
local params = file .. " --buffer 1024 -t waveaudio \"Speakers\""
-- print(string.format("params = %s\n", params))
ShellExecute("open", "sox\\sox.exe", params, nil, 0)

Setup:

unpack content of sox_dtmfs.zip next to tSIP main executable (on_dial.lua - script you see above - is also inside)
modify on_dial.lua script - change the name of audio device to match your system configuration; you can remove audio device name completely if you are fine with playing through default audio device
assign on_dial.lua to "on dial" event in tSIP (Settings/Scripts)

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tSIP: local keypad DTMFs with sox

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