Spektral Mobile

Spektral is a professional real-time audio frequency analyser for sound engineers. Identify feedback frequencies on the go and ring out PA systems with your iPhone or iPad.

TWO VIEWS, ONE WORKFLOW
• RTA (Real-Time Analyser) — live spectrum display with logarithmic frequency scale, 20Hz to 20kHz
• Spectrograph — scrolling time-frequency heatmap where feedback shows as persistent bright horizontal lines

TOUCH-OPTIMISED
• Horizontal pinch to zoom the frequency axis
• Vertical pinch to zoom the dB range
• Drag to pan when zoomed
• Tap to place cursor with sub-bin frequency accuracy
• Double-tap to reset all zoom and pan

PRECISION TOOLS
• 4096-point FFT for fine frequency resolution
• Parabolic interpolation for accurate cursor readings
• Peak hold with smooth decay
• Adjustable smoothing and frame averaging
• Musical note display on peaks and cursor

BUILT-IN TOOLS
• Pink noise generator for reference output
• Soundcheck mode with automatic peak identification
• Snapshot compare for A/B analysis

DESIGNED FOR THE STAGE
• Full-screen dark interface for low-light environments
• Works in portrait and landscape
• Uses the built-in microphone or any connected audio interface

No subscriptions. No account required. No internet connection needed.