input files : source soundfile
destination soundfile
output file : result.wav (default)
processing mode : global
This option can be used to combine (by adding) the contents of the destination soundfile with the contents of the source soundfile (if either the source or the destination soundfile is not specified an error message is generated). If the added soundfiles do not have the same length, the output file is trimmed to the shorter one. Whether or not a block of samples is selected, the difference is evaluated for an entire soundfile.