Spectrum Analyzer+ Audio FFT vs VA Auto

Spectrum Analyzer+ Audio FFT shows the live frequency spectrum of any sound your iPhone microphone hears, then lets you capture a 5-second average and read the result: the strongest frequency in Hz, the top components and where the energy sits. ▶ See the spectrum live • 32 bands from 20 Hz to 20 kHz, computed with a 2048-point FFT • Four views: Bars with peak hold, Line, Waterfall and Spectrogram • Peak frequency and peak level update as you listen • Min / Max traces in the Bars view, tap a bar for a cursor readout, freeze the display to study it • Adjustable dB range from 30 to 120 dB ▶ Capture 5 seconds, get an answer Tap Capture 5 s under the graph and hold the sound steady. The app power-averages the spectrum over five seconds and shows a result card: • Strongest component in Hz, with the musical note and cents in Voice mode • Up to three top components with their levels • Share of the detected energy in the low, mid and high part of the selected range • Strongest band level and the FFT resolution of the measurement If the sound is too quiet in that range, the card says so instead of inventing a peak. ▶ Compare before and after Save a capture as a reference (up to 10). Make a change — move a speaker, add treatment, adjust a machine — capture again in the same mode and the card shows the average band-level difference in dB. References can also be overlaid on the live spectrum. ▶ Pick the job • Voice: 80–4000 Hz, shows the note of the strongest pitch • Machine: 20–2000 Hz, looks for 50/60 Hz mains hum and its harmonics • Room: 20–500 Hz, the low end where room modes build up ▶ Export and share • Export a CSV of the live spectrum or of a 5-second capture • Share a short text summary of a capture ▶ Extras • Calibration offset from −20 to +20 dB in 0.5 dB steps to line up with a reference meter • Pink noise generator, unlocked for 24 hours by watching a short ad • Interface in 30 languages ▶ Good to know Levels are relative to the microphone's full scale (dBFS). A phone microphone is not a certified sound level meter, so use the numbers to find frequencies and compare changes, not for compliance measurements. Audio is analysed in memory while you listen and is not saved as a recording. For musicians checking a tone, home studio and hi-fi owners chasing a boomy note, and anyone tracking down a hum from a fridge, fan or transformer.

VA Auto-EQ is a professional tuning and control app designed for compatible subwoofers and audio devices. Connect via Bluetooth to monitor device status, adjust sound parameters, and optimize audio performance for different listening environments.Key Features:• Bluetooth Device Control Search for and connect to compatible devices, with real-time synchronization of volume, equalizer, crossover, and other audio settings. Custom device names make connected products easier to identify.• Volume, Phase, and Delay Adjust output volume, switch between 0° and 180° phase, and configure audio delay to improve low-frequency alignment and overall listening performance.• Multiple Sound Modes Choose from Music, Cinema, Night, and Flat modes. Each mode can be adjusted to suit music playback, movie viewing, nighttime listening, and other scenarios.• Six-Band Parametric Equalizer Fine-tune frequency, gain, and Q values using an interactive EQ graph. Restore a flat response with one tap, or save, load, and delete custom EQ presets.• Auto EQ Calibration Start the scanning and calibration process, then compare the Target, Original, and Corrected curves on a single graph for a clear view of the resulting response.• Crossover and Filter Settings Configure the crossover frequency, subsonic filter, and output high-pass filter to achieve smoother integration between the subwoofer and main speakers.• Device Status and Management View software and MCU versions, receive device status and warning notifications, and restore factory settings when required.• Demo Mode Explore the main controls and tuning interface without connecting to a physical device.VA Auto-EQ features a landscape-oriented interface that keeps essential controls clear and accessible, making it suitable for home theaters, music systems, and professional audio setup.Please note: This app requires a supported Bluetooth audio device. Available features may vary depending on the device model and firmware version.