I would like to generate files of silence of specific durations, all at 16+kHz, 16bit wide, and single channel. After reading http://sox.sourceforge.net/sox.html I believe the following command should do that, but instead it produces a tone:

sox --null --rate 16k --bits 16 --channels 1 "C:/Users/me/Desktop/silent19secs.wav" synth trim 0.0 19.907625

Please tell me how to adjust this command.

Cheers,

David