Hardware Products

Sound Aquisition Module (ASAM™)

About ASAM™

Breakthrough Sound Capture—Where Microphones Can’t Go

ASAM™ (Alango Sound Acquisition Module) is a groundbreaking way to capture sound through solid barriers like glass, metal, plastic, or composites without external microphones or openings.

This solves an old problem: how to hear sounds behind sealed or protected surfaces without compromising strength, hygiene, weather resistance, or aesthetics. Until now, no practical solution allowed reliable sound sensing through solid surfaces while removing noise on the sensor’s side.

Powered by Vibrozio™, Alango’s proprietary digital signal processing (DSP) engine, ASAM™ picks up internal sounds even in noisy, sealed, or complex environments. It integrates seamlessly into automotive, industrial, medical, and security systems where normal microphones cannot venture.

			ASAM™ Module 45 mm x 35 mm 1.77 in x 13.77 in

What is Vibrozio™?

Traditional vibration sensors pick up sounds from both sides of a surface but can’t tell which side they come from.

Vibrozio™ solves this with a patent-pending adaptive filtering algorithm that uses:

• Three MEMS vibration sensors, strategically placed for optimal SNR.

• An integrated reference microphone to detect local noise near the sensor.

These inputs are processed on an offboard DSP to separate sounds coming from inside or outside the barrier. The result: clear, focused sound capture behind physical obstacles—enabling sound acquisition in sealed enclosures and protected areas.

ASAM™ Module Overview

Each compact 40 × 35 mm module includes:

• 3 MEMS vibration sensors, arranged for optimal signal-to-noise ratio.

• 1 integrated reference microphone, essential for Vibrozio’s filtering.

• Daisy-chain A²B connectivity, easily expanding coverage.

• No onboard DSP—processing is centralized for easier upgrades.

• Non-invasive mounting, attaching cleanly with industrial adhesive.

Technical Specifications

• Size: 40 × 35 mm

• Vibration Sensors: 3 MEMS

• Reference Microphone: 1 MEMS

• Output: Multichannel digital vibration and mic signals (raw)/li>

• Processing: Offboard DSP with Vibrozio™

• Connectivity: A²B bus

• Power: Supplied over A²B bus

• Scalability: Daisy-chain multiple units for extended coverage

Applications

• Detect emergency sirens or worker alerts through glass without external mics.
• Detect internal cries or movement (e.g. forgotten children or pets) while filtering outside noise.

• Monitor vibrations and acoustic signatures inside sealed machinery or pipelines.
• Enable predictive maintenance without intrusion, reducing failures.

• Capture patient sounds from incubators or isolation rooms, maintaining sterility.
• Passively monitor crying, breathing, or distress in sensitive settings.

• Covert listening through walls, windows, or doors in rescue or intelligence operations.
• Differentiate internal vs. external sounds for situational awareness.

• Isolate voice commands within a room, avoiding triggers from outside.
• Improve voice interface reliability; mitigating against unintentional activations.

Key Technologies Enabled

• Advanced structure-borne vibration capture

• Zonal sound detection (inside vs. outside)

• Adaptive local noise filtering

• Non-invasive mounting; no openings

• Extendable design across large surfaces using multiple modules

• Future-ready for wireless transmission or on-module processing

ASAM™ Advantages

✔  Hear through barriers without breaching them

✔  Optimized for harsh environments

✔  Centralized DSP allows easy performance upgrades

✔  Ideal for automotive, industrial, medical, tactical, and smart infrastructure

Part of Alango’s Vision

ASAM™ and Vibrozio™ are part of Alango’s expanding portfolio of sound and vibration technologies—designed to sense what traditional microphones simply can’t.

Learn More

Vibrozio™:
Hearing Beoynd Barriers

Contact Alango about Hearing Beyond Barriers