# FeedbackGuard — Adaptive Feedback Suppressor > Real-time adaptive audio feedback suppressor for live performance and recording. (iPhone/iPad app by Norwin Palme.) - Source: https://appshunter.io/ios/app/feedbackguard/id6769670528 (this page in markdown: same URL + `.md`) - Developer: [Norwin Palme](https://appshunter.io/developer/1889770642) - Category: Music, Utilities - Price: $3.99 - Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 4 MB - Languages: American English - Released: 2026-05-22 - Data updated: 2026-08-08 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/feedbackguard/id6769670528/reviews.md ## What is FeedbackGuard? FeedbackGuard is an Audio Unit v3 effect that stops acoustic feedback before it ruins your performance. Whether you are singing live, speaking on stage, or recording vocals on iPad, FeedbackGuard listens for runaway howling and automatically places precise notch filters — so you can focus on the show, not the squeal. HOW IT WORKS FeedbackGuard uses PNPR (Peak-to-Neighbourhood Power Ratio) analysis combined with a growth check to tell real feedback apart from normal voice, speech, or room tone. When a howling peak starts to build, the plugin tracks it with parabolic peak detection and deploys an adaptive notch bank that reacts in milliseconds. Designed for live use: attack and release times, suppression depth, and notch count are all under your control. KEY FEATURES • Real-time howling detection (PNPR + run-up check) • Adaptive notch bank — up to 24 simultaneous notches • Live spectrum display with active notch markers • "Balanced" preset for safe, transparent defaults • 3 user preset slots — tap to recall, hold to save • Fine-tuned controls: Sensitivity, Notch Threshold, Suppression, Q, Attack, Release • Optional harmonic tracking for stubborn feedback tones • Optional spectral noise reduction for quiet passages • Full bypass GET STARTED IN SECONDS 1. Open your AUv3 host (GarageBand, AUM, Cubasis, and more) 2. Insert FeedbackGuard as an audio effect on your vocal or monitor channel 3. Tap "Balanced" for recommended live settings 4. Raise Notch Threshold if notches appear on voice or room tone IDEAL FOR • Live vocals and speech • Rehearsals, worship, small PA setups • Mobile recording rigs on iPhone and iPad • Any situation where monitor feedback is a risk COMPATIBILITY • Audio Unit v3 (aufx) effect • iPhone and iPad • Works in any AUv3-compatible host • Mono or stereo, sample rates from 8 kHz to 192 kHz FeedbackGuard — Adaptive Feedback Suppressor by Norwin Palme. ## Key features - Real-time howling detection - Adaptive notch bank (up to 24 notches) - Live spectrum display - User-defined presets - Adjustable sensitivity and suppression - Optional harmonic tracking - Optional spectral noise reduction ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/feedbackguard/id6769670528/reviews.md ### 5/5 — Работает *2026-05-25* Спасибо за приложение. Можно конечно эквалайзером все это делать, но тут все автоматизировано и удобно, тем более за такую цену. Да не 100% идеально, но близко. Физика есть физика, cpu конечно она подъедает. 10-12% на м1 . Если сможет разработчик оптимизировать-будет еще круче ## Frequently asked questions about FeedbackGuard ### What is FeedbackGuard? FeedbackGuard is an Audio Unit v3 effect designed to automatically detect and eliminate acoustic feedback in real-time. It's ideal for live vocals, speech, and mobile recording setups on iOS devices. ### How does FeedbackGuard work? It uses PNPR analysis and a growth check to distinguish feedback from normal audio. When feedback is detected, it deploys an adaptive notch bank to precisely filter the offending frequencies within milliseconds. ### What devices does FeedbackGuard support? FeedbackGuard is compatible with both iPhone and iPad and works within any AUv3-compatible host application. ### What is the price of FeedbackGuard? FeedbackGuard is available for a one-time purchase of $3.99. ### How often is FeedbackGuard updated? The latest version is 1.4, and it was last updated on June 22, 2026. Updates typically address performance enhancements and compatibility improvements. ### Can FeedbackGuard be used offline? Yes, FeedbackGuard functions as an audio effect within your AUv3 host and does not require an internet connection to operate, making it suitable for offline use. ### What is the age rating for FeedbackGuard? FeedbackGuard has an age rating of 4+, indicating it is suitable for users of all ages. ### What are the main benefits of using FeedbackGuard? Users can expect to eliminate disruptive howling and squealing during live performances or recordings, allowing for a more focused and professional audio experience. Its adaptive nature ensures it reacts quickly to changing audio conditions. ## Version history (last 5 releases) ### 1.4 — 2026-06-22 v1.4: Room setup & detection improvements, stable NR setup - Adaptive max-notch limit respects room pins; band limits enforce detection range - Room setup target raised to 20 notches - NR setup: reliable capture, 6s visual progress, bypass/playback hints - Quick presets: hold-to-save feedback, double-tap to delete - Voice gate reduces speech false triggers; reference input disabled until next build - iOS 26 compatibility fixes and expanded DSP/UI tests ### 1.3 — 2026-06-01 - fixed a bug in room setup, where it wouldn't set notch filters when adaptive is off ### 1.2 — 2026-05-31 - iOS-26-Deadlock-Fix - Pinned-Notch-Drift-Fix - Preset-Reset-Button added ### 1.1 — 2026-05-26 - Saving a preset in the host now saves all the settings in the plugin correctly - fixed a few UI settings ### 1.0 — 2026-05-22 No release notes. ## More apps by Norwin Palme - [LipSync Test Tool](https://appshunter.io/ios/app/lipsync-test-tool/id6761455176) - [ToneNoise](https://appshunter.io/ios/app/tonenoise/id6769564157) All apps by Norwin Palme: https://appshunter.io/developer/1889770642 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-08.*