MusicFreq vs Audio File Analyzer

MusicFreq is a music player. MusicFreq analyzes the audio data of the DRM Free music being played and visualizes it in a real-time frequency spectrum graph. This graph appears when you're playing DRM-free (unprotected) MP3, M4A, AIFF, etc. music files that have been synced to your Music Library using your Mac or Windows computer and then downloaded to your device. Music purchased from AppleMusic or iTunesStore is in m4p (AAC) format protected by DRM (Apple FairPlay). Please note that protected audio files and cloud items will not be displayed in the graph. (Music can still be played.) Graphs can be customized as line, scatter, and bar graphs. The screen color changes to the same color as the album artwork of the music being played. You can control music with tap, long tap, left and right swipe. Display the simplified setting menu with the upper swipe. You can quickly change the basic color of the screen to your favorite color with few operations. Screen rotation is automatic and can be displayed and operated in both portrait and landscape. MusicFreq controls the iOS system player, so the music to be played is shared with the music library of the iOS Music App, the music controller widget in the lock screen and the control center, the equalizer for the music in the settings app. You can also use the timer stop setting within the settings app to stop playback. It is also possible to remotely control the player from a Blutooth device. Preparation Add DRM-free music files such as MP3 and M4A (unprotected AAC) to the Music app library on your Mac or Windows computer. Connect your iPhone to your Mac or Windows computer and sync your music library. Download the synced DRM-free music in the Music app on your iPhone and start playing it. Make sure the graph is displayed in the MusicFreq App. Function FFT (Fast Fourier Transform) of voice data and high frequency real time display of frequency spectrum graph MP3 BPM (Beat Per Minutes) analysis and title string blink animation Title string morphing animation Album artwork display Forced screen rotation lock operation Reproduction of iTunes playlist folder hierarchy Automatic scale expansion/contraction for MP3 in linear scale graph display Player operation Tap: Play / Pause Swipe left / right: Back / forward Long tap on left / right area of ​​screen: fast reverse / fast forward Seek bar (slider) tap: Move to any playback time position Swipe up: Display customization menu Swipe down: Display song list Two finger swipe left and right : Change graph type Two finger swipe up and down : Change graph granularity Two finger rotation : Change graph layout Pinch-in: Logarithmic scale Pinch out: Linear scale Graph customization Select from 5 types: line graph, scatter diagram, bar graph (short, long, dotted line) Audio stereo channel left / right graph independent, right channel graph reversed left / right, left / right mixed drawing Graph peak hold, descent, and bound display Automatic adjustment of graph drawing timing (Automatic audio delay matching with Bluetooth audio device connection, manual adjustment is also possible) Adjustment of drawing display information amount Adjustment of drawing update speed Change color (customize menu) Linear scale / logarithmic scale graph display change Notes All audio files in the music library can be played, but only DRM-free (unprotected) music files such as mp3 and m4a can be displayed as a graph. Also, cloud items cannot be analyzed on the device and will not be displayed in graphs, so please download them to the device using a genuine iOS music app. You cannot add DRM-free music files to your library on only device such as an iPhone iPad or iPod Touch. You need a Mac or Windows Computer to load DRM-free (unprotected) music files such as mp3s and m4a into your iOS Music App library. Graph drawing is a heavy processing load, which can cause your device to overheat and consume more power. Please be careful of your battery level.

This app displays the "Audio Waveform" together with the FFT-based "Amplitude Spectrum" (frequency magnitude) or the "Spectrogram" (changes in frequency components over time) for audio files on your device. (FFT: Fast Fourier Transform) You can check the frequency components around the current playback position while playing the file. [Features] - Add audio files from "Files" or songs from "Music" to a playlist within this app. - Simultaneous display of audio waveform and a spectrum / spectrogram linked to the playback position. - Supports both portrait and landscape orientation. - Channel display switching (Mix / L / R). - Displays the peak level of the spectrum and its frequency. - Supports zooming in the frequency direction of the spectrum / spectrogram. - Pitch meter display. - Supports transcription in a specified language. (iOS 26 ~) The Pro version offers Ad-Free Viewing and High-Resolution Analysis (FFT size: 16384). [Spectrum / Spectrogram Display Settings] - Frequency Axis: Linear, Log - FFT Size: 1024, 2048, 4096, 8192, 16384 (* 16384 is available in the Pro version) - Window Function: Hann, Hamm, Blkman, None - (Spectrum) Octave Analysis: FFT, 1/24, 1/12, 1/6, 1/3, 1, Calc Method: Max, Ave - (Spectrogram) Display Duration: 5–30 seconds, Display Range: -60 to -150 dB [Transcription screen] (* Available on iOS 26 or later.) Transcribes speech in the selected audio file. The results are divided into recognized speech segments and displayed in cells with their start times. Tap a cell to move to that position. Swipe left on a cell to copy its text. ================================================ [Note] This app can't add songs of the following formats. - Songs from Apple Music, iCloud, iTunes Match - Songs that are protected by digital copyright (DRM) ================================================