This programs overrides the usual use made by the BeOS with the leds of a BeBox, which is to display CPU activity, by displaying the average level (short term : 10 ms) of whatever flows in the ADC or DAC stream.

There's a logarithmic scale (-96 to 0 dB) or a linear scale. New in version 0.5 : there's a combined display of the maximum level in dark green under (above) the instantaneous level display in bright green, just like on your power amplifier's or VCR's digital vu-meter.