RTA vs Transfer Function: When to Use Which
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TL;DR
RTA: single-channel magnitude. TF: dual-channel with coherence and phase. Use RTA for monitoring and feedback detection. Use TF for alignment, EQ, and before/after comparison.
Single vs Dual Channel
RTA: FFT of mic signal. TF: H(f)=Gxy/Gxx with coherence.
RTA Excels At
- Visual monitoring
- Feedback detection
- Hum/noise ID
- Program analysis
TF Excels At
- Alignment
- EQ with coherence
- Before/after
- Delay measurement
Workflow
TF for alignment → RTA for monitoring → TF for documentation. Press 1/2 to switch. The AI diagnostic analyzes both.
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Frequently Asked Questions
Last updated: March 19, 2026