added docu about positional sensing for rim shots

corrados · Jan 5, 2024 · 78b704d · 78b704d
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diff --git a/doc/algorithm.md b/doc/algorithm.md
@@ -118,6 +118,13 @@ Further testing showed that it is important to use the very first peak in time f
 a later peak is used, the positional sensing based on the low-pass filtered signal does not yield
 good results.
 
+For positional sensing when a rim shot is played, we use the rim shot detection metric which gives a
+good indication of the position:
+<br/>![Positional sensing with rim shots](images/rim_shot_pos_sense.png)<br/>
+The idea is that if the strike is far away from the center mounted piezo,
+the peak in the rim piezo is much higher than that from the center mounted piezo. If the strike is close
+to the middle of the pad, the peak of the center mounted piezo is much higher compared to the rim piezo.
+
 
 ### Positional sensing if a rim-shot is played
 

diff --git a/doc/images/rim_shot_pos_sense.png b/doc/images/rim_shot_pos_sense.png