> Also on page 5 (6 in MkII) is Figure 1 which shows the timing of the > outputs, and clearly shows the output of each channel of the 4051 as a > sequence of short pulses. To add, each pulse is 0.95us wide, at a period of 22.7us (44.1kHz), a duty cycle of just over 4%. Neil -- http://www.njohnson.co.uk