Hi, when i navigate to the folder with the source file and manually execute the following command it works: sox threebursts.wav temp_outfile.wav silence 1 0.1 1 : newfile : restart but if I craete a batch file which takes teh file as argument, it doent work: sox "%~1" temp_outfile.wav silence 1 0.1 1% 1 0.1 1% : newfile : restart it results into : >sox "C:\Users\hom\Downloads\Desktop\New folder (3)\threebursts.wav" temp_outfile.wav silence 1 0.1 1 : newfile : restart Any idea why that do not work please? Cheers H