Sound HUD Support

Decibel meter and acoustic telemetry with an aviation-inspired head-up display: sound levels, frequency spectrum and noise dose.

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Developer: SVM Dev Studio (SVM Development SpA), Chile · Platform: iPhone, iPad and Mac

Frequently asked questions

What is Sound HUD?

Sound HUD is a real-time acoustic telemetry system and decibel meter (dB SPL) with a tactical, aviation-inspired head-up display. It provides real-time sound level measurements, frequency spectrum analysis and noise dose tracking.

How does microphone calibration work?

You can calibrate the microphone offset (±10 dB) in steps of 0.5 dB in the Settings panel to match a dedicated reference sound level meter.

What weighting curves are supported?

A-weighting (human ear response), C-weighting (industrial / peak response) and Z-weighting (flat, linear response).

How do I restore my Sound HUD PRO purchase?

Open Settings or the PRO upgrade screen and tap Restore Purchases. Your Apple ID will sync and restore your lifetime PRO access.