In concert experiments measuring audience members and performers with a variety of sensor systems, strategies are needed to synchronise measurements across devices. In two concert experiments, we asked participants to tap to a beat on their respective accelerometer-inclusive sensor devices. The imbedded tapping signatures allowed hundreds of recordings to be aligned in time, from deviations over 1000 ms (with variable clock drift as well as offsets) down to 100 ms (non-musicians) and 40 ms (professional musicians). Devices included participants own cellphones and the wearable Equivital sensor vests and Movesense ECG belts. A write up of this process and its performance were in the conference proceedings of ICMPC17-APSOM7 (2023), pdf available here. The code used to evaluation these taps, make corrections, and report on the resultant changes in alignment can be seen in this repo particularly the notebooks:

• https://github.com/finn42/BiC_Initial_Analysis/blob/main/Alignability_check.ipynb
• https://github.com/finn42/BiC_Initial_Analysis/blob/main/Multi_cue_finding.ipynb
• https://github.com/finn42/BiC_Initial_Analysis/blob/main/Into_Concert_time_Ax3.ipynb
• https://github.com/finn42/BiC_Initial_Analysis/blob/main/Into_Concert_time-Equivitals.ipynb
• https://github.com/finn42/BiC_Initial_Analysis/blob/main/Alignment%20described.ipynb