1. Transmission Route & Room Setup
Distance to TV Screen / Soundbar
1.8 ft
TV Game Audio Level
74 dB SPL
In-Game Voice Gate (VAD) Sensitivity
-38 dBFS
2. Live DSP Signal Chain & Vivox Telemetry Docked TV Bleed
68.9 dB
Acoustic TV Bleed
-24.2 dB
AEC Ducking Depth
64%
Voice Packet Drop Rate
36%
Squad Intelligibility
The Paradox Explained: Why did your voice work in the Switch OS Mic Test? The OS test runs in a quiet system screen with no game audio playing through the TV. In Fortnite, gunfire and music echo into the dock mic, triggering Vivox's Acoustic Echo Cancellation to aggressively duck your speech.
Recommended Calibration Checklist
- Plug in any 3.5mm or USB-C Headset: Even inexpensive earbuds eliminate speaker-to-mic physical coupling, instantly curing 100% of AEC vocal dropouts.
- Lower Fortnite "Voice Chat Threshold" in Audio Settings: Adjust the in-game open mic slider from 38% down to 10%–15% so your real voice isn't suffocated below the gate.
- Increase Console Distance: Move the Switch dock at least 4–5 feet away from TV speakers or soundbar drivers. At 1.8 feet, inverse-square sound pressure easily overpowers speech.
- Switch to "Push to Talk": Avoid Open Mic when playing docked with surround TV sound active.
Technical Deep Dive: The Vivox AEC Collision
Epic Games' Fortnite uses the Vivox SDK for multi-platform voice chat. When you play in Handheld Mode, your mouth is 6 to 10 inches from the console mic array, and the stereo speakers face away. Signal-to-Noise Ratio (SNR) is high (+20 dB).
When Docked, your TV speakers blast game audio into the room. If the console's onboard mic or dock microphone picks up the game audio, the Vivox AEC engine identifies the incoming sound as feedback and cancels out the audio buffer. Because your speech happens simultaneously, your vocal frequencies get clamped alongside the echo, resulting in "choppy speech" and "1-bar speaker meter" registration.