Re: [LAD] mudita24 summing pct outs

Since the envy24 hardware metering doesn't actually have an "over" indicator, the best i can do is indicate when it's at 0.0dB. Note that once the 0.0dBFS indication lights up, if you were to push your signal a little farther than 0.0dBFS then you'd see an over in the output stream. Also, the 0.0dBFS indication is just the top 9 bits of the signal, which means you still have up to 15 LSB's (in the 24 bit sound) more before you actually hit full-scale, and only after that, would you be over. To get actual over indication along w/ a dB reading, you need use something that's actually listening to the digital stream, e.g. jkmeter. W/r/t the mixer, you can sum the individual inputs and PCM's into the mixer. If all the signals are equally quiet, you may never see an over and just hear the "mix". However, let's say you have two incoming signals that are at -1dBFS. In that case, mixing them in the digital summer of the ice1712 will result in an over. To understand the digital mixer and the fact that the mixer controls in mudita24 are just 24 bit attenuators into a 20-way 36 bit wide stereo digital summer, consult the architecture diagram: http://nielsmayer.com/envy24control/envy24mixer-architecture.png Also, from http://code.google.com/p/mudita24/source/browse/trunk/mudita24/README ///// ///// ///// ///// The peak metering data is displayed as 0 to -48dBFS in envy24control's meters. This data is derived from the envy24's hardware peak metering: ///// ///// ///// ///// Niels http://nielsmayer.com