# SimpleRTA

SimpleRTA is a browser-based real-time analyser (RTA), spectrograph, and audio meter for measuring frequency response and playback levels. It is open source and self-hosted, installable on Unraid.

Canonical page: https://ourlocalhost.com/app/3312/simplerta

## Description

SimpleRTA is a browser-based real-time analyser (RTA), spectrograph, and audio meter for measuring frequency response and playback levels. All capture and analysis happens in the page, and audio never leaves the browser, keeping your measurements private. It suits homelabbers who want a lightweight, self-hosted RTA with no cloud services. Readings are relative dB values rather than calibrated, so use them for comparison instead of absolute SPL.

## Platform availability

Available on 1 of 6 install platforms: Unraid.

## Health score

51/100 (Fair), based on 3 of 4 factors.
- Maintained: 91 (last commit 9 days ago)
- Popular: 0 (0 GitHub stars)
- Easy to install: 35 (1 install platform, install notes, Docker image)

## Links

- Unraid: https://ca.unraid.net/apps/simple-rta-1lkhisz00gn9ef?q=simple-rta
- Official website: https://simple-rta.stoatworks-labs.com

## Common questions

### Why will a phone or laptop on my LAN refuse microphone access when SimpleRTA is served over HTTP?

Browsers only grant microphone access on localhost or over HTTPS. A plain HTTP address on your LAN will be denied, so put the app behind TLS.

### What analysis views and meters are included?

It provides 1/3 to 1/48 octave RTA, a scrolling spectrograph, and a full-height peak/RMS meter.

### Is the codebase written entirely by AI?

No. It is an AI-assisted project created with Claude Code, directed and reviewed by a human author.

### How is the analysis chain verified?

The project uses 29 tests that pin power normalisation at every transform size and through every window, plus band-integration invariants.

## Alternatives

- OSS Gallery: Discover the best open-source projects.
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- Privacium: An open-source app built to guide you through the world of digital privacy.
- Privacy Guides: Privacy Guides is a socially motivated website that provides information for protecting your data security and privacy.
- PrivacyTools.io: You are being watched.
- Product Hunt: Product Hunt is a curation of the best new products, every day.
- SimilarSites: Easily find more sites like those you like.
- Slant: Slant is a product recommendation community with the goal of making it effortless to find the best product, app or game for you.
- alternative.me: Welcome to alternative.me, the source of better software alternatives.
- freemediaheckyeah: The largest collection of free stuff on the internet!.

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Source: Our Local Host (https://ourlocalhost.com/app/3312/simplerta), the self-hosted and open-source app directory.