Signal Processing - July 2017 - 146

Winners of the SP Cup 2017
Grand Prize: Team Beats on the Barbie
* University of New South Wales
* Undergraduate students: Angus Keatinge, Max Fisher,
Jeremy Bell, and James Wagner
* Supervisor: Vidhyasaharan Sethu
* Video: https://www.youtube.com/watch?v=
VkoGZnVEsfw
* Technical Approach: Team Beats on the Barbie (Figure S1)
adapted and optimized an existing real-time beat-tracking algorithm [6] for Rasberry Pi. They controlled
their creative application, a robotic drumming system
(see Figures S2 and S3), using an Arduino Mega.
The robotic drummer can play back a drum part
encoded as an Arduino sketch, and during the final
competition it accompanied team members Jeremy
Bell and James Wagner in a performance of John
Lennon's "Imagine." Due to the use of high-powered
solenoid drivers and fast triggers, the system was
able to play drum fills and was loud enough to
require no additional amplification.

Second Prize: Team Madmom
* Johannes Kepler University, Austria, and Télécom
ParisTech, France
* Undergraduate students: Amaury Durand (Télécom
ParisTech), Sebastian Pöll (Johannes Kepler University),
and Raminta Balsyte (Johannes Kepler University)
* Supervisor: Sebastian Böck
* Graduate Mentor: Florian Krebs
* Video: https://www.youtube.com/watch?v=
Losv4GqsGYU
* Technical Approach: Team Madmom (Figure S4) adapted a real-time beat-tracking system from the existing
offline approach in the Madmom Python library [7] and
used a recurrent neural network. To allow real-time
operation, the bidirectional neural network was replaced with a unidirectional network. They controlled
their creative application, a robotic drumming system
(see Figures S5 and S3), using a Raspberry Pi. Instead
of a preprogrammed drum pattern, the system inferred
what to play based on the analysis of the rhythmic

FIGURE S3. The automated drums for Team Madmom and Team Beats

146

FIGURE S1. First place team: Beats on the Barbie.

on the Barbie. Both teams implement drum signals for the bass drum,
the snare drum, and the hi-hat.

FIGURE S2. Solenoid-based actuators for Team Beats on the Barbie.

FIGURE S4. Second place team: Team Madmom.

IEEE SIGNAL PROCESSING MAGAZINE

|

July 2017

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https://www.youtube.com/watch?v https://www.youtube.com/watch?v

Table of Contents for the Digital Edition of Signal Processing - July 2017

Signal Processing - July 2017 - Cover1
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Signal Processing - July 2017 - Cover3
Signal Processing - July 2017 - Cover4
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