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Calibration

Antescofo
#1

I am using the calibration patch from the tutorial but am having a time using my trumpet. The calibration always reads that I am sharp no matter what tuning note I use.

I tried toying with changing the tuning note to 435 or 444 but that did nothing. I also adjusted it to 466 to reflect a Bb and played a C on my trumpet but still was told I am sharp. If I play the lower octave it come closer but says I am flat then. I hooked up my input to pitch~ and it said I was in tune. Not sure where I have gone wrong here.

In addition how close to center does the instrument need to be for correct pitch detection?

#2

There are TWO outlets out of Calibration: http://cl.ly/image/1R411m3S2n3L

The first one (on the left of the figure and visualized on a multi-slider) is for Energy Calibration and it’s almost always high when you play. This is the most important one! When you play, it should go higher than 0.7 and when you don’t it should drop lower than 0.5.

The second output is a probability measure on A4 by default. If you play A4, it should go higher than 0.5 (more or less) and when you don’t it should be less. But since this is a probability measure it’s not as direct as the other one!

Reply back if this is not clear.

Note: Never compress audio for Antescofo! This will alter the energy calibration and recognition.

Suggestion for concert use: I always separate ADC for Antescofo and DSP. This way I can control the levels for Antescofo and DSP separately from the console and it also allows me to compress the DSP ADC if needed.

#3

That makes sense. Thanks for the clarification.

Would it be possible to make the 2nd output more closely resemble a standard tuner with the slider not behaving so quickly to incoming data? I am thinking of something like sending the signal into mean -> zl stream ->zl sum -> slider. Just playing around with it it seems to slow down how fast the slider updates but I am no sure if that is the best way to do it. I think it would also be good if the tuning note were centered rather than being higher than .5. It seems to me that most musicians will be accustomed to having the tuner in the middle once they are in tune.