.ULAW File Extension

Raw u-Law Audio File

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What is a ULAW file?

A ULAW file is a Raw u-Law audio file used primarily in telecommunications. It contains audio data encoded with the G.711 u-law algorithm, commonly pronounced as "myoo-law." The format is uncompressed and widely used in United States telephony systems to store and transmit voice data efficiently.

More Information

ULAW files typically appear in telephony environments, such as call centers and telecommunication networks. Telecommunications and voice data analysts often work with these files.

Although the G.711 u-law algorithm is an older technology, it remains in use for its simplicity and effectiveness in voice transmission. The ULAW format is often compared to similar audio file formats, like the .ALAW format, which is more common in European telecommunication systems.

How to open a ULAW file

You can open ULAW files with various audio players, including Audacity, VideoLAN VLC media player, and Adobe Audition. To open a ULAW file with Audacity, select File → Import → Raw Data.

How to convert a ULAW file

Several audio players, including Audacity and FMJ-Software Awave Audio, can convert ULAW files to other formats.

For example, Audacity can convert ULAW files to the following formats:

  • .WAV - WAVE Audio
  • .OGG - Ogg Vorbis Audio
  • .MP3 - MP3 Audio
  • .AIFF - Audio Interchange File Format
  • .FLAC - Free Lossless Audio Codec File
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Programs that open ULAW files

All Platforms
Windows
FMJ-Software ACDR
Wave Flow
MPEG4IP
Mac

Verified by FileInfo.com

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