Compression Frequency Analyzer
See the live level and dynamic range (loudest minus quietest) of each octave band from your microphone — revealing which frequencies are the most and least dynamic, the bands a multiband compressor would work hardest on.
ℹ Relative dBFS, single-source view — not a before/after file comparison. This shows per-band level and how much each band’s level varies over time. It can’t compare a compressed vs uncompressed version (that needs offline file processing), and the numbers depend on your uncalibrated mic and room. Use it to see where the dynamics live. Nothing is recorded or uploaded.
What This Shows
The microphone signal is split into octave bands (63 Hz up to 16 kHz). For each band the analyzer shows the current level and, since you pressed Start, its dynamic range — the difference in dB between that band’s loudest and quietest moments (above a noise gate). A band with a large range is highly dynamic; a band with a small range is steady or already compressed. That’s exactly the information you’d use to decide where multiband compression might help.
Because it reads a live, uncalibrated, single microphone signal, the figures are relative dBFS and include your room. It’s a way to see per-band dynamics, not a calibrated measurement or a true before/after comparison of a compressed file.