All about SFI Files

The SFI file type is primarily associated with DIRAC Simulator.

SFI	File extension: SFI
	File type:	data file

What is an SFI file?

SFI files mostly belong to DIRAC Simulator. Audio Impulse Response Files: This is the most common use for SFI files. They use the RIFF container to store impulse data, known as Spatial Field Impulse or the Sound File Impulse Response Format. Programs like DIRAC Simulator and Sound Forge work with these files for spatial audio processing.
Scanned Image Files
Some SFI files hold scanned image data, often linked to applications such as PhotoShop.
GIS/CAD Data Files
Other files with the SFI extension come from Georgian Software Systems and are used in GIS/CAD work, supported by tools like SuperFin and systems from Novapoint.
Key Points as outlined by FilExt.com:

Verify the internal format (e.g. RIFF for audio data).

Match the file type with the appropriate software depending on its origin.

Audio versions focus on impulse response data for sound simulation.

Image or GIS/CAD versions require graphic or mapping applications.

How to open an SFI file

You need a suitable software like DIRAC Simulator to open an SFI file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your SFI file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a SFI file directly in the browser:. Just drag the file onto this browser window and drop it.

Online SFI Text Viewer

Choose your .sfi file to analyze

or drag and drop it here

Online File Viewer

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SFI format details:

If you know the file format, you can also find out how to open or edit the file. The file format can be deduced from the file extension and the signature. If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. Exact knowledge of the format is therefore important in order to solve problems occurring in files. Below you will find our evaluation of the SFI files:

SFI is seldom used as a file extension and covers different formats for different programs. The two most common formats are as follows:

• 55% of all SFI files are associated with Sonic Foundry Impulse files, which internally utilize the well-known RIFF format. RIFF files store data in tagged chunks. There are primarily used to store multimedia such as sound and video. These are binary files, so they do not contain words or text. The average file size is 470 KB with most files being between 130 KB and 540 KB in size. The file type was primarily used more than 20 years ago. The keywords RIFF and SFIPfmt ( are typical for these files. The file name Bridge, East Washington pan left.sfi or Bethel Church 25.sfi is typical for these files. These files are attributed to barn, microphone, high and audio.
• 9% of all SFI files start with the bytes PBS crucial for this file format. The contents of these files cannot be read by a human; only a computer program can interpret the data. The average file size is 450 KB with most files being between 67 KB and 970 KB in size. The following keywords are characteristic: cprt, mntrRGB XYZ, PROFILE and desc.

All the rest of the SFI files (36%) have different formats. These files sometimes refer to condenser, bathroom, firmware, control, foundry, theater, power, right, park or room. Drag & drop your file here to see the file format and a preview of your SFI file!