WOW DB Meter & RTA

WOW DB Meter & RTA turns your iPhone and iPad into a professional-grade acoustic measurement tool and real-time audio spectrum analyzer (RTA). Engineered with precision DSP algorithms and fluid 60 FPS GPU-accelerated graphics, it is the ultimate tool for audio engineers, acoustic consultants, studio musicians, live sound technicians, and car audio enthusiasts.

KEY FEATURES:

• PRECISION DECIBEL (SPL) METER
- Accurate real-time sound pressure level measurement in dB.
- Industry-standard frequency weighting curves: dBA (human hearing response), dBC (bass/industrial sound), and dBZ (unweighted flat response).
- Configurable response times: Fast (125ms), Slow (1000ms), and Room Impulse (2000ms).
- Dynamic analog-style circular gauge with live peak indicator, numerical readout, and minimum / average / maximum dB stats tracking.

• REAL-TIME AUDIO ANALYZER (RTA)
- High-resolution Fast Fourier Transform (FFT) spectrum analysis with Hann windowing.
- Multi-band octave band views: 1/1 Octave (10 ISO standard center bands) and 1/3 Octave (31 precision bands).
- Pro 1/6 Octave High-Resolution mode (61 bands) for surgical room mode inspection and feedback suppression.
- Continuous spectral curve mode with lingering peak decay indicators.
- Interactive touch-to-inspect bar feature displaying exact frequency (Hz) and amplitude (dB).

• MULTI-TARGET ACOUSTIC CURVES
- Overlay reference acoustic targets directly onto your live RTA to tune speaker systems and home theaters:
- Harman Target Curve (+6dB bass shelf)
- Studio Flat (Reference calibration)
- SMPTE 202M X-Curve (Cinema sound tuning)

• BUILT-IN PINK NOISE GENERATOR
- Integrated high-fidelity pink noise generator using the Kellet algorithm for room equalization, speaker voicing, and frequency response analysis.
- Live output volume attenuation slider.

• HARDWARE CALIBRATION & MIC PROFILES
- Pre-calibrated hardware profiles optimized for Apple iPhone and iPad internal microphones.
- Manual SPL trim adjustment (±15 dB) with one-tap 94.0 dB external calibrator reference mode.

• RESPONSIVE STUDIO WORKSPACE
- Optimized for both portrait handheld metering and landscape full-screen RTA visualization.
- Native iPad split-view and tablet support.

DISCLAIMER:
WOW DB Meter & RTA is designed as a high-precision acoustic reference and sound tuning aid. It is not intended for use as a legally certified industrial metrology device.