# 52 49 46 46 ?? ?? ?? ?? 51 4C 43 4D — File format magic numbers

For 52 49 46 46 ?? ?? ?? ?? 51 4C 43 4D, offset is 0; extension is qcp; format is Qualcomm PureVoice file format, recorded from its source on 2026-08-03.

- **Hex signature:** 52 49 46 46 ?? ?? ?? ?? 51 4C 43 4D _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 0 _(unconfirmed — we could not tie this to the quote below)_
- **Extension:** qcp
- **Format:** Qualcomm PureVoice file format

## What the source says

> qcp | <https://en.wikipedia.org/wiki/Qualcomm_PureVoice> Qualcomm PureVoice file format

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).