LinFIR Documentation

Welcome to the official LinFIR documentation. LinFIR is a professional tool for designing FIR filters for loudspeaker crossovers and frequency response corrections.

Quick Navigation

• New to LinFIR? Start with the Overview
• Setting up audio? See Audio Setup & Measurements
• Designing filters? Check Driver Processing
• Need help? Visit Troubleshooting

About This Documentation

This documentation covers all aspects of LinFIR, from basic setup to advanced directivity analysis. Use the sidebar to navigate through different topics, or use the search function (top-left) to find specific information.

Accessing Documentation

You can access this documentation in several ways:

• From within LinFIR: Select Help > Documentation from the menu bar or press H from any window
• Online: Visit https://demaudio.com/doc/linfir/ for the latest version
• Offline: LinFIR automatically serves embedded documentation locally when no internet connection is available

When you access documentation from within LinFIR, the application will:

1. First attempt to open the online version
2. If the online version is unreachable (no internet or timeout after 3 seconds), automatically fall back to the embedded local documentation server
3. The local server runs on port 3030+ and serves the documentation directly from the application

This ensures you always have access to documentation, whether online or offline.

Safari Configuration (Mac OS)

⚠️ Important for Safari users on Mac OS: The local documentation server uses HTTP (not HTTPS) for localhost connections. To access the embedded local documentation in Safari, you need to:

1. Open Safari > Settings (or Safari > Preferences)
2. Go to the Security tab
3. Disable the “Non-secure site connections” option

This allows Safari to connect to the local HTTP server running on http://localhost:3030+.

Alternative: If you prefer to keep Safari’s security settings unchanged, the online documentation at https://demaudio.com/doc/linfir/ is always available and uses HTTPS.

LinFIR - Precision FIR Filter Design for Speaker Crossovers and Corrections
Visit https://linfir.demaudio.com for updates and support