Hi: Unless your card is noisy, getting the exact volume is not that big of a deal, as you can normalise it later. To do this, do the following: 1. Record your material at a safe level (i.e. at one where the levels do not clip). 2. Assuming you called it recording.wav, do the following: sox recording.wav -e stat This will print a number of statistics about the file. The final one will look something like this: Volume adjustment: 1.000 If the number is above 1.0, it means that the file can be amplified without it clipping. The above example is for a file that is already as loud as it can go. 3. Now do the following: sox -v <volume adjustment> recording.wav normalised_recording.wav Where <volume adjustment> is the value in the output as shown above. This will make a copy of your recording that can be as loud as possible without clipping (i.e. it is normalised). Geoff. -- Geoff Shang <gshang at uq.net.au> ICQ number 43634701 Please avoid sending me Word or PowerPoint attachments. See http://www.fsf.org/philosophy/no-word-attachments.html
