Audacity
Audacity Team (open source)
The most widely used open-source audio editor in paranormal investigation. Standard tool for EVP review, spectrogram analysis, and noise reduction workflows.
Adobe Inc.
Professional DAW with spectrogram view, spectral frequency display, and batch noise reduction. Used by investigators who need to integrate EVP analysis with video evidence in a single Adobe workflow.
Adobe Audition is a professional digital audio workstation included with Creative Cloud. For paranormal investigators already using Adobe Premiere Pro for video review, Audition integrates directly — send audio from Premiere to Audition for detailed analysis, process it, and return the result to the video timeline automatically. This is the primary reason investigators choose Audition: seamless AV workflow integration.
Audition's Spectral Frequency Display is powerful for EVP work. Use the Paintbrush Selection Tool to lasso anomalous spectral events and apply Heal Selection — Audition analyses surrounding content and fills the selection with plausible noise floor content, erasing contamination. The DeNoise and DeReverb effects are automatic adaptive tools — no manual noise profile needed.
Audition's Match Loudness panel normalises a batch of recordings to a consistent loudness level, which is important when reviewing recordings made on different devices or different gain settings at the same investigation. Standardised loudness makes it much easier to identify statistically anomalous loud events across a recording set.
Investigator Note
As with all audio processing tools, maintain the original unprocessed recording as the canonical evidence file. Adobe Audition's non-destructive session format (.sesx) preserves all edits as a list of operations, allowing full reconstruction and verification of processing applied.
Audacity Team (open source)
The most widely used open-source audio editor in paranormal investigation. Standard tool for EVP review, spectrogram analysis, and noise reduction workflows.
iZotope, Inc.
Professional audio repair suite with AI-powered Spectral Repair and noise removal. Used by forensic audio analysts and film post-production. The most capable tool for isolating anomalous audio from contaminated field recordings.
Ocenaudio Team
Lightweight cross-platform audio editor with real-time effect preview. Popular with EVP investigators who find Audacity's workflow slow for rapid evidence review through long recordings.