equalizer 16K FFT LAB-GRADE RTA

1/24-Octave Real-Time Spectrum Analyzer

Inspect live acoustic frequency distributions with 1/24-octave fractional resolution. Diagnose room modes, isolate feedback spikes, evaluate pink noise responses, and overlay 4 simultaneous measurement traces.

GET IT ON Google Play

Download on the App Store

Launch Live RTA in Console

graphic_eq Workstation Capabilities

Professional Acoustic RTA & Multi-Trace Suite

play_arrow Open Live RTA Console

tune

1/24th-Octave Resolution

240 logarithmic acoustic bands with Q ≈ 34.7 for pinpointing micro-feedback rings and room resonances.

layers

4 Multi-Trace Overlays

Freeze and compare live measurements across memory banks M1–M4 for A/B PA tuning and target curve matching.

speed

Ballistics & Weighting

Fast (125 ms) and Slow (1,000 ms) decay modes with true IEC A, C, and Z (Flat) acoustic weighting filters.

mic

Mic Calibration Import

Load standard .cal/.txt calibration files for UMIK-1, iMM-6, MM1, and Earthworks measurement microphones.

bolt Ready to measure? Open the real-time analyzer in your browser with zero install required.

Launch Console

equalizer Why 1/24-Octave RTA Resolution Matters at FOH

In live sound reinforcement, standard 31-band (1/3-octave) graphic spectrum displays average acoustic energy across wide frequency windows. This broad averaging hides narrow room resonance modes and makes it difficult to pinpoint the exact frequency causing a microphone to squeal.

Surgical Feedback Isolation & Room Mode Detection

A 1/24th-octave analyzer divides the spectrum into 240 logarithmic bands with a sharp filter quality factor (Q ≈ 34.7). This matches the bandwidth of parametric EQ notch filters on modern digital mixing consoles, allowing system engineers to notch out ringing feedback frequencies with surgical precision without thinning out vocal warmth or instrument body.

Whether ringing out stage monitor wedges before rehearsal or checking house curve response with pink noise, high-resolution fractional octave analysis shows you the acoustic reality of the room rather than a smeared approximation.

devices Native SoundEngg RTA Capabilities

Unlike basic web audio apps that suffer from buffer dropouts and browser-imposed high-pass filters, the native SoundEngg Mobile & Desktop Console delivers:

4 Multi-Trace Overlays: Freeze live measurements into Memory Traces (M1 to M4) to compare left vs. right arrays, before/after PEQ adjustments, or empty hall vs. packed venue acoustic responses.
CSV & High-Res PNG Export: Export raw dB-SPL values across all 240 frequency bands directly to CSV for acoustic reporting or spreadsheet verification.
Custom Calibration Curve Loading: Import frequency calibration files (.cal / .txt) for miniDSP UMIK, Dayton Audio iMM-6, Beyerdynamic MM1, or Earthworks measurement microphones.
Zero Latency Peak Tracking: Real-time numerical peak readout tracking the loudest live frequency in Hertz with 0.1 dB accuracy.

help Frequently Asked Questions

Why is 1/24-octave RTA resolution superior to standard 1/3-octave for live sound?

A standard 1/3-octave RTA divides the audio spectrum into only 31 broad bands, smearing narrow acoustic room modes and micro-feedback rings. A 1/24-octave RTA delivers 240 distinct logarithmic bands with a filter Q of ~34.7, matching modern digital console parametric EQ filters for surgical feedback notching without hollowing out vocal warmth.

How do Fast vs. Slow ballistics help during live soundcheck?

Fast ballistics (125 ms decay) reveal transient acoustic spikes, vocal plosives, and instantaneous feedback frequencies in real time. Slow ballistics (1,000 ms decay) average out room reflections and pink noise fluctuations, providing a stable visual representation of the venue's overall tonal balance for PA house curve tuning.

Can I connect an external measurement microphone for live RTA calibration?

Yes. While built-in smartphone microphones are suitable for quick checks between 100 Hz and 8 kHz, SoundEngg Pro supports external USB-C measurement microphones (such as miniDSP UMIK, Dayton Audio iMM-6, or Earthworks) and imports individual calibration files (.cal / .txt) to achieve flat reference measurement down to 20 Hz.

Experience 1/24-Octave Precision Live

Download SoundEngg on your iPhone, iPad, or Android phone for instant 60 FPS acoustic spectrum analysis in any arena or rehearsal space.

GET IT ON Google Play

Download on the App Store

Open Web Console