RTA01

RTA is a pocket-sized real-time spectrum analyzer built for audio engineers and PA operators. FEATURES - Switchable resolution: 31, 63, or 127 bands - A/C/Z frequency weighting (IEC 61672-1 compliant) - High-precision peak detection using raw FFT data with parabolic interpolation - Peak hold - Calibration offset (for matching a reference measurement device) - Tap any band to see its exact frequency and dB level - Upside-down mode for inverted mounting - Multiple color themes (Black / White / Neon / B&W) NO ADS, NO PRESSURE This app has no interruptive ads. If you find it useful, you can support development with an optional tip. Handy for quick frequency balance checks and finding feedback points in the field. Note: readings are for relative reference only and are not guaranteed to match a calibrated measurement instrument.