"Audio Frequency Analyzer" is a powerful Real-Time Audio Analyzer (RTA) app for the iPhone. This app is a special edition that is optimized for the iPhone based on the "fo-Kannon" iPad RTA app adopting the digital signal processing technology with high accuracy."Audio Frequency Analyzer" uses our proprietary digital audio signal processing technology to analyze incoming audio signals and provides a precision frequency response measurement and spectral visualization. In the frequency range of 20kHz from 20Hz, the response of the measurement frequency can be displayed in 30 split band scale of 1/3 octave or the logarithmic FFT scale. By the version 3.1, the display response control function is supported as new features."Audio Frequency Analyzer" is available in a variety of applications, such as room tuning, speaker setting, audio equipment testing, stage setting measurement and evaluation of sound mixing environment.Features: - High performance software design for real-time spectrum audio analyzing.- FFT: 4096 points/frame. - 1/3 octave (30 bands) frequency spectrum response measurement. (Mode: 1/3OCT) - FFT measurement. (Mode: FFT) - Logarithmic amplitude display: 60dB/band-width - Function of Touch-Scroll to adjust visible amplitude ranges. - Return function of the display range.(SCALE)- Display Pause function. (PAUSE)- Calibration function. (CALIB.)- Display response. (SLOW)- Peak Hold function at 1/3OCT mode.(HOLD) - Snapshot of Measurement display.(SNAP)- Supports built-in microphone, headset microphone, and external digital audio connection. Note:The authorization for access to the built-in microphone will be confirmed by the iOS system at first boot. Please enable access to the microphone. TOON,LLC is a company that seeks the comfort of sound environment based on our acoustic proprietary technology, and we will provide tools for audio professional, sound technology, home theater installer, and anyone who loves audio.Please visit our iOS App Support page for more information on this app.