Use case

Remove personal data from audio recordings

PII Shield redacts names, phone numbers, addresses and other personal data from audio — interviews, calls, voice notes and meetings — entirely on your own computer. It transcribes locally, tells speakers apart, and bleeps out the sensitive parts, so you can share a recording safely.

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Short answer. Open the recording in PII Shield. It transcribes on-device, finds the personal data in the transcript, and lets you redact it — muting the audio and masking the transcript. Nothing is uploaded; the redaction is reversible from a local mapping.

Why do it locally

Recordings often contain the most sensitive data of all — real voices, names, phone numbers and health or legal details. Sending them to an online transcription or redaction service means handing that data to a third party. PII Shield keeps the whole process on your machine, which matters for journalists protecting sources, clinics and therapists handling patient audio, researchers with consented interviews, and support or sales teams reviewing calls.

How it works

Local transcription. The recording is transcribed on your computer with an on-device speech model.
Speaker separation. Speakers are identified locally, so you can review the conversation clearly.
Detect & review. Personal data in the transcript is highlighted; you confirm what to redact.
Redact. The audio is bleeped and the transcript masked at each redaction, and a local mapping keeps it reversible.

Supported audio formats

MP3, WAV, M4A, FLAC and OGG. Your recordings are processed on your device, offline after activation, on Windows 10 and 11.

Frequently asked questions

How do you remove names from an audio recording?

PII Shield transcribes the audio on your computer, detects personal data such as names, phone numbers and addresses in the transcript, and lets you redact them — bleeping the audio and masking the transcript — before you share the file.

Is the audio uploaded to a server for transcription?

No. Transcription runs locally with an on-device speech model. Your recordings and the personal data in them never leave your Windows computer.

Which audio formats are supported?

MP3, WAV, M4A, FLAC and OGG.

Can it tell speakers apart?

Yes. PII Shield separates speakers locally, so you can redact per speaker and keep the conversation readable.

Can I restore the original later?

Yes. A mapping is stored on your device, so redaction is reversible when you need the original values back.

Redact audio without uploading it anywhere

Free for 14 days on Windows 10 and 11.

Download for Windows See pricing