Discovery dumps don't arrive clean. A single criminal case can land on your desk with hours of jail calls, a 911 call recording, bodycam audio, and interrogation footage — and before any of it can be shared with co-counsel, experts, or turned over in redacted form, the spoken PII has to come out. Doing that by scrubbing a waveform in a video editor is slow, error-prone, and hard to defend if anyone asks how the redaction was done. Audio redaction software solves this by transcribing the recording, letting you select the exact spoken words to mute, and producing a redacted copy while the original stays untouched — with an audit trail you can point to. This guide compares five tools that handle audio redaction in 2026, evaluated from the perspective of US criminal-defense attorneys, public defenders, and defense investigators. We looked at how each tool handles transcript-based audio muting, whether redactions are permanent and auditable, how pricing works for solo defenders versus offices, and whether the tool fits the rest of the evidence-review workflow — because redaction is rarely the only thing you need to do with a jail call or a bodycam file.
#1 Evidence Copilot — Solo $39/user/mo with 15 media-processing hours included; Firm $99/user/mo with 60 hours and priority queue; PD Office $750/attorney/yr with 100 hours. Overage is metered and hard-capped at 3x included hours. Every plan includes the full workspace — no feature tiers.
Evidence Copilot is a grounded evidence-review workspace built specifically for US criminal-defense attorneys, law clerks, defense investigators, and public-defender offices — and that defense-only focus shows in how its audio redaction works. You upload the discovery dump (jail calls, 911 audio, bodycam video, interrogation footage, scanned police reports) by web upload or email attachment, and the platform produces timestamped, diarized transcripts with word-level timestamps. That word-level accuracy is what makes the audio redaction precise: you pick the exact spoken words you want removed, and that span is muted in a new derived file. The original is never touched, and every redaction action is audited — which matters when you need to explain what was redacted and why.
Pros
- Redaction lives inside the same workspace where you review, cite, and prepare motions — no exporting between tools
- Published pricing with no sales wall; the PD Office tier undercuts JusticeText's ~$1,200/attorney/yr by roughly 38%
- Originals are immutable and every redaction is audited, supporting defensible disclosure
- AI suggestions are always marked for human review — the product never auto-applies redactions or makes legal conclusions
Cons
- Defense-side only by design — prosecutors and law enforcement are not the target users
- Media uploads are capped at 2 GB per file, so extremely large source files need handling
- Newer product than the established redaction vendors, so teams with strict procurement checklists should verify fit during a walkthrough
Best for: Solo criminal-defense attorneys, defense firms, and public-defender offices that need audio redaction as part of a full evidence-review workflow — not as a standalone chore.
#2 CaseGuard — Plans start around $279 per user/month (Doc $99/mo, Lite $199/mo, Standard $249/mo, Premium $329/mo per third-party listings; contact CaseGuard to confirm current tiers).
CaseGuard Studio is an on-premise desktop application for redacting video, audio, images, and documents, with a strong footprint in law enforcement and government but real utility for legal teams handling multimedia evidence. According to their website, the audio workflow is transcript-driven: CaseGuard auto-transcribes recordings, then lets you mute, bleep, or resample spoken PII such as names, Social Security numbers, and card details by clicking words in the transcript. It supports 911 calls, interviews, bodycam audio, and other legal recordings, with transcription and translation in 100+ languages. For attorneys, the main draw is the on-premise architecture — files never leave your environment, which appeals to firms with strict data-handling requirements — and bulk redaction across unlimited files in a single project. The trade-off is that it is desktop-only software with no cloud or remote collaboration option, and pricing starts around $279 per month per user, which is a meaningful commitment for a solo practice that only occasionally needs audio redaction.
Pros
- On-premise processing keeps sensitive recordings entirely under your control
- Transcript-based audio muting is faster than scrubbing waveforms by hand
- Unlimited redactions make high-volume work predictable to budget
- Broad format support covers bodycam, 911 calls, and scanned documents
Cons
- Desktop-only — no cloud access or remote collaboration
- Entry pricing is high relative to occasional audio-redaction needs
- Per third-party reporting, it has been flagged for lacking FIPS validation, which matters for federal-adjacent work
Best for: Firms and legal teams handling high volumes of multimedia redaction who want everything processed locally on their own hardware.
#3 SecureRedact (by Pimloc) — Approximately $299/month per software directory listings; contact SecureRedact for current pricing.
SecureRedact is a UK-based (Pimloc) platform for automated video and audio redaction, widely used by law enforcement, public agencies, and organizations handling disclosure workflows — and its audio capabilities are relevant to attorneys working with recorded evidence. According to their materials, the platform performs AI detection of faces, license plates, and screens in video, and handles audio through speech-to-text analysis that identifies and redacts spoken names, places, and dates — the classic spoken-PII problem in jail calls and interview recordings. Deployment flexibility is a genuine strength: SaaS, API, private cloud, and on-premise options cover firms with data-sovereignty concerns, and batch processing supports large backlogs of bodycam footage and interview recordings. Every detection, override, and export is logged with timestamps and user attribution, producing audit trails suitable for disclosure. The caveats for a US defense practice: the company is UK-based with limited US legal-market presence, no US government certifications like CJIS or FedRAAMP are advertised, and at roughly $299/month (per software-directory listings) it is priced more like an agency tool than a solo-attorney utility.
Pros
- Speech-to-text audio redaction targets spoken PII directly
- Strong audit logging supports defensible disclosure
- Flexible deployment including on-premise
- High-volume batch processing
Cons
- UK-based with limited presence in the US legal market
- No advertised US government certifications (CJIS, FedRAMP)
- Pricing is oriented toward agencies rather than solo practitioners
- Redaction accuracy depends on transcription quality in noisy recordings
Best for: Organizations and firms with high volumes of video and audio evidence needing automated, auditable redaction with flexible deployment.
#4 Reduct — Free trial available; Personal $12/editor/month (billed annually), Professional $40/editor/month, Enterprise from $75/editor/month.
Reduct (reduct.video) approaches redaction through text-based editing: it transcribes your audio and video, and you make cuts and redactions by selecting text rather than manipulating a timeline. For audio specifically, Reduct lets you select phrases from the transcript and mute them, and its redaction can also remove the corresponding transcript text and captions so the muted span doesn't leak through in a subtitle. According to their website, their 'Secure Blur' algorithm makes redactions technically irreversible — you cannot recover data from redacted areas — which addresses a real concern with consumer-grade blur tools. For defense attorneys, Reduct's broader value is the review workflow: searchable transcripts, click-to-play word-level playback, clip assembly, and unlimited storage for evidence archives, all of which support bodycam review and cross-exam prep alongside redaction. Pricing is accessible — plans start at $12/month for personal use, with professional tiers at $40/editor/month and enterprise from $75/editor/month. The known limitation, per competitor comparisons, is that its transcription can miss specialized legal terminology, so attorneys should proof transcripts before relying on them for citation-grade work.
Pros
- Text-based editing makes audio redaction fast and intuitive
- Irreversible redaction protects against data recovery
- Low entry pricing with a free trial
- Doubles as a transcript review and clip-building tool
Cons
- Transcription can miss specialized legal terms, requiring proofreading
- General-purpose media tool, not built specifically for criminal-defense workflows
- No document/PDF redaction or evidence-analysis features like inconsistency flagging
Best for: Attorneys and small teams who want fast, text-driven audio and video redaction plus a capable transcript review workflow at accessible pricing.
#5 Veritone Redaction (Managed Service) — Contact for pricing. Veritone Redact software has been listed starting around $600/month; the managed service is quoted per project.
Veritone offers audio and video redaction both as software and — distinctively — as a white-glove managed service, which is a different model than the other tools on this list. Instead of buying software and doing the redaction yourself, you send files to Veritone's team, which uses AI-driven detection with human review to redact spoken words and phrases (names, addresses, other sensitive content), faces, license plates, screens, and other objects. According to their website, audio content can be muted or toned (beeped) over, files are handled under stated security and confidentiality controls throughout the process, and you receive an audit log showing all actions and edits — supporting FOIA compliance and chain-of-custody documentation in court proceedings. You can also direct which items get redacted and which stay visible, and review the redacted files before final delivery. For a defense team, this is best understood as an outsourcing option: useful when a one-off case involves a large volume of audio that nobody on the team has time to redact, or when staff lack the tooling. The trade-offs are that you're trusting an external team with sensitive recordings, pricing is enterprise-oriented (their Redact software has been listed starting around $600/month), and turnaround depends on their queue rather than your own schedule.
Pros
- No software to learn or maintain — work is done for you
- Human review layered on AI detection for accuracy
- Audit logs support court and FOIA documentation requirements
- Handles both audio and video in one engagement
Cons
- Sensitive recordings leave your control to a third-party team
- Enterprise-oriented pricing; not economical for routine small redactions
- Turnaround depends on the service queue, not your deadline
- Less suitable when redactions are frequent and ad hoc
Best for: Legal teams that need redaction done for them on a per-case basis rather than maintaining redaction software in-house.
Audio redaction in a criminal case is never just audio redaction. The jail call you're muting PII out of is the same recording you'll cite in a suppression motion; the 911 audio you're cleaning for turnover is the same file you'll mine for timeline inconsistencies. That's why our top pick isn't a standalone redaction utility. Evidence Copilot puts word-level audio redaction inside a grounded evidence-review workspace — diarized transcripts, an AI agent that cites the exact second it's quoting, auto-signals for report-versus-bodycam conflicts, and cross-exam drafts — with immutable originals, audited redactions, and published pricing starting at $39/user/month (or $750/attorney/year for PD offices). If you only need occasional muting, Reduct's text-based editing is an affordable option; if you need everything processed on your own hardware, CaseGuard is the on-premise workhorse; SecureRedact and Veritone cover agency-scale and outsourced workflows. Whatever you choose, insist on three things: redactions that are permanent and audited, originals that are never altered, and AI output that's always marked for human review. Want to see how redaction fits into the rest of your evidence workflow? Book a 20-minute walkthrough at evidencecopilot.com/book, or start on the Solo plan at evidencecopilot.com/signup.
Frequently asked questions
What is audio redaction software and why do attorneys need it?
Audio redaction software removes spoken sensitive information — names, addresses, phone numbers, Social Security numbers — from recordings like jail calls, 911 audio, and bodycam footage. Most modern tools do this transcript-first: the recording is transcribed, you select the exact spoken words to remove, and the corresponding audio span is muted in a new output file. Attorneys need it whenever recordings are shared outside the defense team, turned over in redacted form, or used as exhibits, because manual waveform editing is slow, error-prone, and difficult to defend if the redaction method is ever questioned.
Is transcript-based audio redaction reliable for jail calls and bodycam audio?
It's reliable when the underlying transcription is accurate, which is why transcription quality matters more than the redaction feature itself. Tools with word-level timestamps and speaker diarization (like Evidence Copilot's Deepgram Nova transcription) let you target the exact spoken words, and you should always listen back to the redacted span to confirm nothing leaked and nothing important was cut. No tool should be trusted blindly on noisy recordings — human review of every redaction is the professional standard, and the best tools are built around that review rather than around auto-applying changes.
Can redacted audio be recovered or reversed?
With proper tools, no. Reputable redaction software mutes or removes the audio span and produces a new derived file, and some (like Reduct's Secure Blur for video) specifically design against data recovery. The bigger risk is workflow-related: if you redact a copy but the original with full audio circulates, or if captions and transcripts still contain the muted words, the 'redaction' fails. Look for tools that keep originals immutable, strip redacted content from transcripts and captions, and log every redaction action.
How much does audio redaction software cost in 2026?
It varies widely. Evidence Copilot starts at $39/user/month (Solo, 15 media-processing hours) with a PD Office tier at $750/attorney/year; Reduct starts at $12/editor/month for personal use; CaseGuard's entry plans run roughly $99–$279/month depending on tier; SecureRedact is listed around $299/month; and Veritone's managed service and Redact software are enterprise-oriented (Redact has been listed from about $600/month). For occasional one-off needs, a managed service or low-cost tool may suffice; for ongoing discovery work, a subscription bundled with transcription and review is usually more economical.
What makes Evidence Copilot different from standalone redaction tools?
Evidence Copilot treats redaction as one step in a full evidence-review workflow for criminal defense. Beyond word-level audio muting, you get diarized transcripts with word-level timestamps, OCR for scanned police reports, an AI evidence agent whose every answer cites the exact second of video or page of PDF, auto-signals that surface candidate inconsistencies between reports and recordings, cross-exam drafts, and playbooks like Suppression Motion Prep. Every redaction creates a new derived file with the original untouched and the action audited, and AI-suggested redaction regions are always marked 'AI-suggested — needs review' — nothing is auto-applied. It's also defense-only by design, with published pricing and no feature tiers.
Do I need to worry about attorney-client privilege or data security with these tools?
Yes — evaluate how each vendor handles your recordings before uploading anything. Ask where files are stored, whether they're used to train AI models, what encryption and access controls exist, and whether redactions and exports are logged. On-premise options like CaseGuard keep files entirely in your environment; cloud tools vary in their security posture. Evidence Copilot keeps originals immutable, scopes access by case members and roles, gates exports by permission, and fully audits actions including its read-only MCP integration. Whatever you choose, verify the vendor's current security documentation directly rather than relying on marketing claims.
Can these tools also redact video and documents, or audio only?
Most of the tools here handle more than audio. Evidence Copilot does frame-accurate video redaction (drag a rectangle, black or blur), audio word-muting, and image and PDF redaction. CaseGuard covers video, audio, images, and 750+ document formats. SecureRedact focuses on video and audio. Reduct handles video and audio with transcript-based editing. If your redaction needs span bodycam video, jail call audio, and scanned reports, a multi-format tool in a single workspace will save you from juggling separate exports and audit trails.