spectral

spectral is a compact audio spectrum analyzer and real-time visualizer for Android that displays frequency content from the device microphone or line input, offering adjustable FFT settings, multiple visualization modes, and snapshot export for analysis. The app is intended for hobbyists and professionals who need a clear, configurable frequency view on mobile devices.

Overview

spectral provides a responsive spectrum display with standard tools such as real-time FFT, peak hold, adjustable window size, and selectable display ranges; it supports both portrait and landscape orientations and includes light and dark themes to suit different environments. The visualization supports linear and logarithmic frequency scales and configurable resolution and sample rates.

Features

Key capabilities include real-time FFT visualization with adjustable resolution and sample rates, multiple visualization modes including linear and logarithmic frequency scales, peak detection and hold to track dominant tones, snapshot capture and export to common image formats, and low-latency input from the device microphone or external audio sources. These functions are presented without unnecessary complexity so you can focus on measurement and analysis.

Usage and privacy

To use spectral, start the analyzer and grant microphone access when prompted; then adjust FFT and display settings to match your measurement needs. The app stores snapshots locally and does not transmit audio data without explicit user action. Review permissions before use and consult the in-app help for detailed instructions.