LOTTO (Localize OTTOsonics): Automated Spatial Speaker Localization Using Tetrahedral Microphone Array

Proceedings of the 22nd Sound and Music Computing Conference (SMC2025), Graz, July 2025, 213-218. Graz, Austria.

Ben Wesch,
Manu Mitterhuber,
Martin Kaltenbrunner,
2025

Spatial Audio

Download (local)

Related Project

Ottosonics

By Manu Mitterhuber, Enrique Tomás, Martin Kaltenbrunner, 2022

Spatial Audio

Abstract

This paper presents LOTTO (Localize OTTOsonics), an open, affordable and portable system for automated speaker localization in spatial audio setups. Implemented in Pure Data (Pd), it utilizes a 3D-printed tetrahedral microphone array to precisely determine speaker positions through time-of-arrival measurements. The implementation has been successfully tested with a real-world setup, demonstrating its practical applicability for spatial audio installations.