IMA to AU Audio conversion is the process of decoding audio compressed with IMA ADPCM (Interactive Multimedia Association Adaptive Differential Pulse Code Modulation) and rewrapping or transcoding it into the AU audio file format used commonly on Sun/NeXT systems and many audio tools. This conversion extracts and, if requested, recompresses raw PCM data from IMA-compressed files into the AU container so the audio can be played or edited by AU-compatible software.
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Read guide →Drag your .IMA file from your computer or use the browse function.
Confirm .au as the selected destination format.
Click "Convert" and download your converted .AU file once ready.
IMA files typically use the audio/x-ima MIME type and are often associated with proprietary voice recording systems. AU Audio files use the audio/basic or audio/au MIME type and are commonly found in Unix systems and professional audio editing. AU supports codecs like μ-law and linear PCM, offering flexible encoding options for diverse applications.
The AU Audio (.AU) format is commonly used for audio. Understanding its characteristics can be helpful when converting to or from other formats like IMA.
While specific technical details aren't available here, AU Audio files generally serve the purpose of storing audio effectively within their domain.
Easily convert your IMA files to AU Audio format using our efficient online converter. Designed for quick and accurate audio transformations, our tool supports seamless conversion from the IMA source extension to the AU target extension. Whether you need to edit, play, or share your audio files, converting IMA to AU ensures better compatibility and usability.
IMA is primarily a source audio format with limited playback support, often used in specific recording equipment. In contrast, AU Audio is a more universally supported format, compatible with many audio players and editing software. While IMA may retain raw audio data, AU provides better compression and easier handling for general use.
Keep source IMA files under 250 MB for fast web-based conversion; larger files may require desktop tools or premium services.
To preserve original quality, convert IMA to AU using uncompressed PCM16 or PCM24 and match the original sample rate instead of resampling.
For batch conversion, use a command-line tool or batch-capable converter that preserves metadata and uses consistent encoding settings for all files.
Be aware that IMA ADPCM is a lossy codec — any artifacts introduced during original IMA compression cannot be recovered when converting to AU.
This converter made switching from IMA to AU incredibly simple and fast.
James L.
Audio Engineer
Love how quickly the tool converts my files without quality loss.
Emily R.
Music Producer
The best online IMA to AU converter I’ve ever used—reliable and easy to navigate.
Mark D.
Podcaster
Start your free IMA to AU conversion now.
Drag your file here to to upload.
Up to 250MB
If you need smaller AU files, downsample the sample rate or convert to lower bit depth, but test one file first to check acceptability of quality loss.