Audio Spectrogram Analyzer

Audio Spectrogram Analyzer turns audio and video files into detailed spectrograms that show frequency content over time.

Open a file from Files, iCloud Drive, or another storage provider available through the Files app. Analysis runs on your iPhone, and the spectrogram fills from left to right as it processes the file.

SPECTROGRAM

Time runs from left to right, frequency runs vertically, and color represents the signal level in decibels.

Choose Full sample-rate to view frequencies up to the file's sample rate, or Nyquist / half-rate to focus on the lower half of the spectrum. Standard and high-resolution audio files are supported.

FILE INFO

View details about the selected file, including:

• Duration and file size • Container and audio codec • Sample rate • Bit depth when available • Bitrate • Channels • Analysis status

Some information may be unavailable depending on the file or format.

MULTIPLE AUDIO TRACKS

If a file contains more than one audio track, use Previous and Next to switch between them. The selected track is analyzed separately.

EXPORT

Discovery signals