ACRCloud vs Dusk Audio Spectrum Analyzer

ACRCloud provides audio recognition services for files, streams, and live broadcasts. Its music recognition uses a fingerprint database of more than 150 million tracks, and results can include links to Spotify, Apple Music, Deezer, and YouTube, as well as ISRC and UPC codes. Other listed capabilities include metadata, AI music detection, broadcast monitoring, cover song identification, second-screen sync, copyright compliance, audience measurement, humming recognition, offline recognition, and speech to text. Teams can assemble workflows with APIs, SDKs, console tools, and documentation. Mobile SDK references cover iOS, Android, and Unity; its Go SDK supports Linux and macOS. The service is aimed at music services, broadcasters, labels, distributors, advertisers, automotive platforms, brands, and rights organizations. Distributors can compare user-generated content with the music database to identify copyright infringement risk. The platform supports Android, iOS, Linux, macOS, web, and Windows. The listed trial is free for 14 days, with full API access and no credit card required.

Dusk Audio Spectrum Analyzer is a free, real-time plugin for measuring frequency spectrum, loudness, true peak, stereo correlation, and K-System headroom. Its FFT display offers 2048, 4096, and 8192 sample resolutions, with adjustable smoothing and slope and an optional peak hold. Loudness readings cover EBU R128 Momentary, Short-term, Integrated, and Loudness Range measurements. True peak detection follows ITU-R BS.1770-4 with 4x oversampling; the stereo correlation meter runs from -1 to +1. Channel views include Stereo, Mono, Mid, and Side. The manual describes it as a pure analyzer that leaves the audio path unchanged, so output matches input regardless of settings. It requires a 64-bit DAW supporting VST3, LV2, or AU. Listed formats are Linux VST3 and LV2, Windows VST3, and macOS VST3 and AU. Minimum systems are Debian 12+, Ubuntu 22.04+, or Fedora 36+ on Linux, Windows 10+, and macOS 10.13+. The plugins are free and open source, with source code on GitHub. The listed price is free.