WVE to HCOM Converter

Transform Psion WVE audio into Macintosh HCOM

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PDA Audio Rescued

Extract audio from legacy Psion WVE files and convert to HCOM — make vintage PDA recordings accessible in a supported format.

No PsiWin Needed

Convert WVE files without PsiWin or SoX. The entire process runs in your web browser on any operating system.

Secure Processing

Uploaded WVE files are deleted immediately after conversion. Output files are purged from our servers within 24 hours.

How to convert WVE to HCOM

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose hcom or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your hcom file right afterwards

About formats

WVE is the audio format native to the Psion Series 3 family of personal digital assistants, released by British company Psion PLC beginning in September 1991. These clamshell PDAs included a built-in voice recorder, and all dictation functionality relied on WVE files to store captured sound. Each file begins with the ASCII signature "ALawSoundFile**" followed by a minimal header, then raw A-law encoded audio sampled at 8 kHz — a rate inherited from digital telephony standards. At 8000 bytes per second, a one-minute recording occupies just 480 KB, which was essential given that Psion devices stored data on SRAM cards typically ranging from 128 KB to 2 MB. The A-law encoding provides reasonable speech clarity within these tight storage constraints, prioritizing intelligibility over high-fidelity reproduction. WVE files can be converted to WAV or other modern formats using SoX, Awave Studio, or specialized Psion file utilities. While the format is firmly a product of early-1990s handheld computing, it holds historical significance as one of the first audio recording formats designed for pocket-sized consumer devices. Collectors and researchers studying mobile computing history occasionally encounter WVE files when recovering data from legacy SRAM media.
Developer: Psion PLC
Initial release: 1991
HCOM is a Huffman-coded audio format from the early Macintosh era, designed to shrink digitized sound for distribution on floppy disks and bulletin board systems when storage was precious and modems were slow. The encoder takes 8-bit unsigned PCM input, computes a frequency table of sample-delta values, and builds an optimal Huffman tree that replaces common deltas with short bit sequences. Compression ratios of 2:1 or better were typical for speech recordings, a meaningful saving when a 3.5-inch floppy held only 800 KB. Files were distributed as Macintosh resource forks and played through utilities like SoundApp and the BinHex ecosystem that defined Mac software exchange in the late 1980s. The format supported sample rates up to 22.255 kHz, matching the output capabilities of original Macintosh sound hardware. Tools such as SoX retain HCOM decoding support, ensuring that archived recordings remain accessible decades later. HCOM holds three practical advantages for preservation work: lossless compression that recovers the original samples exactly, a self-contained Huffman table embedded in each file for dependency-free decoding, and historical prevalence across thousands of vintage Mac sound archives.
Developer: Apple Computer
Initial release: 1985

Frequently Asked Questions

Why convert WVE to HCOM?

HCOM is a compressed Mac format. Converting WVE serves vintage Macintosh audio preservation.

What can open HCOM files?

Classic Mac emulators and SoX decode HCOM.

What is the WVE format?

WVE is the native audio format of Psion PDA devices (Series 3, 5, Revo). It stores 8-bit A-law encoded audio — a legacy from the EPOC operating system.

Can modern systems play WVE?

SoX and PsiWin on Windows can process WVE files. Standard media players do not support it — conversion is the easiest path to playback.

Can I convert multiple WVE files?

Yes. Upload several Psion recordings and batch-convert them all at once — efficient for archiving an entire PDA audio library.