Behavioural bioacoustics · active sensing · open projects

Understanding how animals sense, decide, and act through sound.

I am a behavioural bioacoustician and experimentalist, fascinated by how animals interact with their environment through sound. My work combines theory, experiments, field systems, and open-source projects to understand the structure of active sensing and behaviour.

Dr. Ravi Umadi

TUM School of Life Sciences
Technische Universität München
Freising, Germany

My doctoral research at the Technical University of Munich focused on echolocation dynamics in bats, particularly how they adapt their sonar system during active foraging and pursuit. I combined theoretical modelling, laboratory experiments with real-time virtual acoustic environments, and field studies to explore how bats modulate sound production, ear movements, and flight behaviour to optimise prey detection and capture.

A key part of my work has been developing new experimental and computational methods to study these processes, including ways to model and simulate acoustic interactions with dynamic morphology—such as moving ears or noseleaves—that shape auditory perception. This has allowed me to uncover new insights into emitter-receiver coordination and the sensory strategies bats use in complex environments.

Beyond my core work on bats, I am deeply interested in applying generative simulation and AI-based modelling to broader questions in sensory biology. I enjoy building projects that bridge biology, physics, and computation, and I am constantly driven by the challenge of understanding how living systems exploit physical laws to navigate and survive in the world.

Selected work

Research highlights

See all publications
2026 · Methods in Ecology and Evolution

ESPERDYNE - A Dual-Band Heterodyne Monitor and Ultrasound Recorder for Bioacoustic Field Surveys.

1. Background. Ultrasonic monitoring is essential for ecological studies of bats and other animals, yet high-performance field devices remain prohibitively expensive a...

Paper
August 25, 2025 · BMC Ecology and Evolution

Widefield Acoustics Heuristic - Advancing Microphone Array Design for Accurate Spatial Tracking of Echolocating Bats

Accurate three-dimensional localisation of ultrasonic bat calls is essential for advancing behavioural and ecological research. I present a comprehensive, open-source ...

Paper
February 07, 2026 · bioRxiv

WAH-i - Optimising Microphone Array Geometry for Customised Localisation Accuracy

1. Accurate spatial localisation of free-flying echolocating bats is foundational for resolving fine-scale flight behaviour, prey interception, and spatial decision-ma...

Paper
2026 · Pre-published

Rates, Ripples, and Responsivity - The Geometry of Echolocation in Water-Foraging Bats

Water-surface foraging is a rare strategy among echolocating bats, requiring precise coordination between sonar emission, echo timing, and flight geometry. Here, I dev...

Paper

Projects

Methods, hardware, and open releases

Open projects
Software · 2025

Array WAH

Microphone array design and spatial localisation framework for bat bioacoustics and sensor-geometry exploration.

acoustics arrays simulation
Software · 2026

WAH-i

Iterative optimisation workflow for customised microphone-array geometry and volumetric localisation accuracy.

optimisation localisation arrays
Hardware · 2026

Esperdyne

Dual-band heterodyne monitor and ultrasound recorder designed for portable field bioacoustic surveys.

hardware field methods ultrasonics

Latest from the blog

Long-form writing and project notes

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12 Feb 2026 · bioacoustics

The Making Of Esperdyne

Esperdyne, an open-source bat detector and recorder, is a fully open-source project by Ravi Umadi. The device implements unique features, such as simultaneous tuning t...

22 Sep 2025 · open science

Why Do I Share What I Create?

I share my code and tools not just to comply with journals, but to contribute meaningfully. Science only moves forward when we share more than the polished results, wh...

13 Sep 2025 · techniques

Behind The Paper - Widefield Acoustics Heuristic

How a simple idea—simulating microphone arrays before building them—grew into the Array WAH toolkit, a method to map localisation accuracy for bat echolocation studies...

24 Nov 2023

A Digital Metronome

A metronome makes and keeps the rhythm and is a most useful tool for any musician. For electronic projects involving music, a simple microcontroller-based metronome ca...

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