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spec.squid.wtf
Acoustic Spectrum Analyzer is a web tool that lets users upload audio files and visualize their frequency spectrum. It supports formats such as MP3, WAV, FLAC, M4A and OGG, with adjustable FFT size, window function, frequency scale and export format. Some formats use native header parsing for sample rate detection, while others rely on browser AudioContext fallback that may resample audio.
friture.org
Friture is a real-time audio analyzer that works on Windows, macOS and Linux. It is free and open source. Through widgets such as spectrum and 2D spectrogram views, it helps users understand audio data by visualizing signal characteristics; it also provides an audio generator with sine, pink noise, white noise, sweep and burst.
whatsmybitrate.com
A free audio bitrate checker and analyzer. The site says users upload a file to reveal its true bitrate, codec, sample rate and frequency content, plus an optional spectrogram of the whole track. It states files can be analyzed or scanned in whole files or batches.
mazmazika.com
Mazmazika is an online music tool platform that integrates multiple music-related functions. Its tools include vocal remover, chord analyzer, ear training, beat maker, sheet music editor, piano, metronome, audio and MIDI piano visualizer, and chord library, with free basic use available in the browser.
github.com
OpenVINO AI Plugins for Audacity is a set of AI-enabled effects, generators and analyzers for Audacity. The features run locally on the PC without an internet connection, using OpenVINO to run AI models on the system's CPU, GPU or NPU. Included tools cover music separation, noise suppression, MusicGen-based music generation and continuation, Whisper transcription and audio super resolution.