# SilenceAlarm

> SilenceAlarm is a cloud-based silence detector and 24/7 audio stream monitoring service for radio stations, broadcasters and streaming providers. It continuously monitors live audio streams (Icecast, Shoutcast, HLS and any HTTP/HTTPS webstream) and sends instant alerts via email, SMS, mobile push or webhook the moment a stream goes silent (dead air) or offline.

Key facts:

- Fully cloud-hosted: no software installation or hardware required, only a stream URL is needed.
- Supported stream types: Icecast, Shoutcast, HLS and any HTTP(S) audio webstream (MP3, AAC, OGG, OPUS and more).
- Detects dead air, muted audio and offline streams with configurable silence threshold (dB) and duration.
- Alert channels: email (all plans), mobile push and webhooks (Pro), SMS (Enterprise only).
- Includes historical audio level charts, silence event logs and EBU R128 (LUFS) loudness metrics (Pro).
- Free live silence test available on the website without signup.
- Languages: English and German.

Pricing:

- Free: $0 forever — 1 monitor, 15-minute check intervals, email alerts, basic silence detection.
- Pro: $9/month — up to 10 monitors, custom check intervals (1–60 min), EBU R128 metrics, reporting, metadata audit & export, email and mobile push alerts, custom thresholds and durations, priority support.
- Enterprise: custom pricing — everything in Pro plus SMS alerts, API and webhook integration, error/anomaly analysis, stream/audit recording, multi-region monitoring, SLA guarantees, dedicated support and custom integrations.

## Main pages

- [Homepage](https://www.silencealarm.com/en): Product overview, features, how it works, FAQ and pricing.
- [Silence Detector](https://www.silencealarm.com/en/silencedetector): Free live silence detector for any Icecast, Shoutcast or HLS stream, plus details on automated 24/7 monitoring.
- [Enterprise](https://www.silencealarm.com/en/enterprise): Multi-region stream monitoring at scale with 99.9% uptime SLA, priority incident response and custom integrations.
- [Contact](https://www.silencealarm.com/contact): Contact form for sales and support inquiries.

## Blog

- [SilenceAlarm Blog](https://blog.silencealarm.com/): Articles on dead air prevention, stream monitoring best practices and broadcast reliability.

## Legal

- [Privacy Policy](https://www.silencealarm.com/en/privacy): How SilenceAlarm collects, uses and protects personal data.
- [Terms of Service](https://www.silencealarm.com/en/terms): Terms governing the use of the platform.

## Optional

- [German homepage](https://www.silencealarm.com/de): German-language version of the site (all main pages are also available under /de).