Voice Enhancement

VoiceDefender™ Gen2

VoiceDefender™ Generation 2 uses 2×2 microphone array technology to enable compliance with MS Teams Open Office.
Crystal clear voice clarity for over-the-head (OTH) headphones without needing a boom microphone.

About VoiceDefender™ Gen2

Bluetooth headphones have matured in sound and comfort, but front-facing distractors in open offices still break calls. VoiceDefender™ Gen2 fixes this by creating a virtual “quiet sphere” around the talker, preserving the user’s voice while attenuating a front distractor by the 15 dB demanded in Teams Open Office testing - without a boom. The result is natural speech pickup in loud, complex scenes (open office, crossroads, train, aircraft) using four microphones (2 per earcup) and Alango’s multi-mic voice pipeline (AEC, noise reduction, EQ, gain).

Why it matters

• Teams Open Office compliance → clear calls in the hardest case: a loud voice 70 cm directly in front.

• No boom required → industrial design freedom with certification-grade performance.

• Plug-and-play for Teams users → higher user trust, lower IT burden.

How it Works (at a glance)

• Special 2×2 mic concept (two mics per earcup) + Gen2 beamforming blends end-fire and broadside strategies to separate the wearer from co-workers and ambient noise—even when the distractor sits at 0° (straight ahead) where classic beamforming collapses.

• Virtual quiet sphere → robust to 0°, 45°, 90°, 135°, 180° interference angles and to diffuse (loud/very loud) noise fields.

• Four-mic, boom-less design → meets Open Office target.
  (Detailed mic placement best practice is available under NDA.)

Audio Examples

			Use the controls to compare the original unprocessed with VoiceDefender™ Gen2 (4-mic) under the front-facing distractor condition

Original Signal

USER VOICE

DISTRACTOR (voice in front)

MIX (user + distractor)

Processed Signal

USER VOICE

DISTRACTOR (voice in front)

MIX (user + distractor)

Open Office Test Focus

Front-facing distractor resilience is the hardest case: at 70 cm directly ahead, the user’s speech and the distractor arrive with near-identical timing, defeating conventional arrays. VoiceDefender™ Gen2 solves this with its 2×2 earcup geometry + proprietary processing, achieving the 15 dB attenuation goal while preserving the talker.

Technology Highlights

• Boom-less Teams Open Office compliance (front distractor −15 dB target)

• Talker preservation across 0°/45°/90°/135°/180° interference angles

• Robustness to diffuse noise

• Integrated voice stack: multi-mic noise suppression, acoustic echo cancellation, EQ/gain management

Additional Technologies for Headphones

• Automatic Volume & Equalization (AVQ) - keeps music/calls comfortable as noise changes.

• ListenThrough™ - adds smart environmental awareness with advanced transparency.

• Personalized Audio – Adjusted according to hearing in seconds.

• Voice Activity Detection (VAD) - low-power always-on speech wake for heavier DSP.

• VoiceFirst™ - enhances dialog intelligibility during media.

Learn More

• VoiceDefender™ Gen2 Overview (PDF) - request the Gen2 datasheet and Open Office test details.

• Mic-placement Guide - available under NDA.

• Contact us to evaluate VoiceDefender™ Gen2 for your next OTH headphone platform.

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