Inside Ultrasonic Death Whistle

17 Presets
13 Individual Instruments
Up to 14 Round Robins


The Dark Sounds of Aztec Death Whistles

Ultrasonic Death Whistle (UDW) was designed as an introduction to our powerful MNDALA 2 Engine. The combination of these two opens the door for unparalleled creative possibilities and unlimited sound design.


Proprietary Engine

VST/AU Plugin included. No additional software required.

3-Axis Universal Controls

Simply map your favourite controller once for all plugin instances.

Intuitive Performance GUI

Custom animation driven performance interface & mouse hover interactions.

Industry Leading Audio Quality

384khz/32-bit extended ultrasonic range sample sources



Preset Demo: UDW LE
Preset Demo: UDW LE
Ultrasonic Death Whistle Teaser
Ultrasonic Death Whistle Teaser
Ultrasonic Death Whistle
Ultrasonic Death Whistle
Preset Demo: Ultrasonic Death Whistle
Preset Demo: Ultrasonic Death Whistle

Listen to UDW

The Story of UDW

Ultrasonic Death Whistle (UDW) was designed as an introduction to our powerful MNDALA 2. The combination of these two opens the door for unparalleled creative possibilities and unlimited sound design.

Performed by our Founder – Composer & Multi-instrumentalist Brian D’Oliveira, UDW offers a window into our collection of rare pre-Columbian death whistles that were found during our research and development. Some of them were even handcrafted in our studio to expand creative sound possibilities, and many of these death whistles were featured in the production of multiple Award Winning AAA Video Game soundtracks.

UDW’s video-game audio-inspired interactive scene allows for non-linear multidimensional control and patch creation for intuitive, yet seamless musical expression.

Each Death Whistle is named to represent their characters. Having been sculpted by hand, their sounds are recognizably unique, each sample map representing a different Death Whistle.

Read More

What's Inside?

All of the following instruments are different death whistles

  • Yuuali (Night)
  • Yuualtotome (Night Bird)
  • Ehecatl (Wind)
  • Tlilcoatl (Viper)
  • Ixehua (Ghost)
  • Coyochoca (Coyote)
  • Izhuayo (Forest)
  • Ixpoctic (Vision)
  • Cuaxicalli (Skull)
  • Ozomatl (Monkey)
  • Tecuyoa (Howl)
  • Huentlalia (Altar)
  • Tzatzllia (WarCry)

Animistic Performance Interface

Control a deep network of parameters with 3 real-time rendered animations

Technical Specifications


→ Recorded at extreme definition 32-bit 384kHz ultrasonic resolution
→ CPU-efficient in-engine playback at industry-leading 24-bit 96kHz resolution


→ VST3 / AU plugin for Windows & Mac OS (10.11+) Including M1 Chip
→ No fuss copy protection, simply install and the instrument is uniquely encrypted to be used within your system
→ Seamless downloads, updates, and installation within MNDALA with a registered Mntra account

File Size

→ 13 sampled Instruments
→ 4 GB installed, 9 GB recommended for setup

System Requirements

→ Minimum 8GB of RAM and an i5 or better CPU required
→ Supported by all 64-bit VST3/AU compatible DAW’s

* Mixcraft 9 Pro is not supported

First time user of Mntra Instruments?

Make sure to download our free MNDALA 2 Engine VST3/AU plugin.

Simply install once and you will be able to run all of our instruments.

Our approach to creating revolutionary instruments

Continuous play and the pushing of creative boundaries are foundational to our instrument creation process. Rather than trying to recreate true-to-life instruments, we choose to experiment and go off the beaten track, in search of a new kind of virtual instrument.

Inspired by the natural world and ancient knowledge from around the world, we embrace expressive (im)perfections. Performing and recording instruments using experimental methods to create sounds like you’ve never heard before.

From our bespoke extreme-quality recording method using ultrasonics, to our constant experimentation with unique workflows and sound sources, each Instrument we release is a playable manifestation of our exploratory journey.

During our sampling process, the subtleties and imperfections of live human performance are embraced and encouraged. Depending on the final intent, we will creatively post-process as little or as much as needed (sometimes beyond recognition), always making sure that the soul and character of the performance is intact once it’s been implemented as one of our expressive playable instruments.

Explore our other instruments