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Sony audio waveform visualisation data
File type: Temporary file
Files with sfk extension can be usually encountered as temporary files generated to visualize audio waveforms in several Sony applications, including ACID, SoundForge or Vegas.
Found 2 different file type records with the same sfk filename suffix.
File type category:
Temporary file
Date updated: November 21, 2023
File extension sfk is mainly related to a special type of temporary files created by Sony programs, such as ACID, SoundForge or Vegas.
The typical .sfk file contains visual data that help the program draw the audio waveform on the screen. Meant to speedup the process.
It appears that this file is mainly generated automatically when a song is put into a projects or when an audio file is opened.
For example CD Architect will always create an .sfk file automatically when you put a song into a project, whilst Sound Forge creates .sfk files when you open a file in "Direct Mode" and also creates these files when you save a .wav file and answer Yes to "Would you like to reopen the file in Direct Mode?"
You should be able to find some option menu that clears and deletes these files when the program is closed, but you can always delete them manually.
This file type is generated automatically by the program, users are not meant to access or edit this file type manually.
It does not appear to be possible to convert or recover this type of temporary files.
Software apps that create sfk files:
Microsoft Windows
Software applications that handle other tasks involving sfk files:
Microsoft Windows
File type category:
Audio and sound file
Date updated: December 17, 2018
The sfk file extension is used by Modem Spy, a software for Microsoft Windows operating system, which enables users to record phone calls.
The sfk file stores sound from Modem Spy.
Use compatible tools to work with *.sfk files.
Probably can be exported to other formats.
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