combine - add two speech signals
(-i item1) (-i item2) (-2) file
(-i item1) (-N item2) (-2) -n file2 file1
is a program to add together two waveforms. It is useful for adding
noise to a speech signal. A signal in file 1 is added to a signal in
file 2 and the result put back into file 1. Signals must match
exactly in sample rate. The second signal is padded with zeros if
it is too short. Two items from one file can also be added, by
using one filename only.
Identify program name and version number.
Select input item number.
Specify name of file containing second signal. Default is to use
Specify item number of signal in second file.
Halve the size of each waveform first to prevent overflow.
Signal in file 1.
Signal in file 2.
Sum of two signals.
If the resulting signal overloads, the program dies.
Fri Jul 09 14:54:41 2004