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Supports: VOC
.voc files. Old Sound Blaster recordings, DOS-game sound rips, dictation captures, and Creative WaveStudio exports all work. Batch is supported — convert an entire folder of legacy clips in one pass.VOC (Creative Voice File) was developed by Creative Labs in the early 1990s to store audio for the Sound Blaster sound-card line. The format is a 26-byte header followed by typed data blocks containing 8-bit unsigned PCM by default, with optional 16-bit signed PCM, Creative ADPCM (4-bit, 2.6-bit, 2-bit), and a-law / u-law variants. WAV (RIFF) eventually displaced it as Windows-native PCM took over. Today VOC files are mostly DOS-era game audio rips, old voice notes from Sound Blaster utilities like VOXKIT and WaveStudio, and material rescued from 3.5" floppies and CD-ROM archives. Converting to WMA — Microsoft's audio codec, first released August 17, 1999 — gives you a small, modern, Windows-native file:
| Property | VOC (Creative Voice) | WMA (Windows Media Audio) |
|---|---|---|
| Developer | Creative Labs (Creative Technology) | Microsoft |
| First released | Early 1990s (Sound Blaster era) | August 17, 1999 (WMA v1) |
| Container header | 26-byte header + typed data blocks | ASF container, WMAv2 codec by default |
| Default encoding | 8-bit unsigned PCM | Lossy perceptual codec |
| Other encodings | Creative ADPCM, 16-bit PCM, a-law, μ-law | WMAv1, WMAv2 (most common) |
| Max sample rate | Up to 48 kHz (extended block 0x08) | Up to 48 kHz |
| Channels | Mono (typical), stereo (16-bit cards) | Mono, stereo (up to 2 channels) |
| Compression | Mostly uncompressed PCM | Lossy, ~2-3× smaller than equivalent MP3 at low bitrates |
| Native Windows playback | No (needs VLC, Audacity, foobar2000) | Yes (Windows Media Player, Films & TV) |
| Native macOS / Android | No | No (VLC or third-party app required) |
| Best for | Legacy preservation, source archival | Distribution to Windows users, compact storage |
| Preset | Approx bitrate | Use case | File size (1-min stereo) |
|---|---|---|---|
| Highest | ~256 kbps | Mastering, archival, music | ~1.9 MB |
| Very High (Recommended) | ~192 kbps | Music, mixed content | ~1.4 MB |
| High | ~128 kbps | General music and voice | ~960 KB |
| Medium | ~96 kbps | Voice, podcasts | ~720 KB |
| Low | ~64 kbps | Spoken word, low-bandwidth | ~480 KB |
| Very Low | ~48 kbps | Narration, audiobooks | ~360 KB |
| Lowest | ~32 kbps | Speech-only, tiny files | ~240 KB |
For most VOC sources — which are typically 8-bit mono speech or game effects — Medium (96 kbps) or High (128 kbps) is plenty. There's nothing in an 8-bit/22050 Hz source for a 256 kbps WMA to preserve.
For 8-bit PCM VOC sources (the vast majority), the answer is essentially no. An 8-bit/22050 Hz mono VOC has roughly 176 kbps of raw PCM data; encoding to WMA at 96-128 kbps preserves everything your ear can detect from that source. For 16-bit VOCs (later Sound Blaster cards) at 44.1 kHz, pick Very High or Highest preset to stay transparent. WMA is a lossy codec, so you do lose some data, but the loss is below the threshold of audibility for the kinds of recordings VOC files typically contain.
Leave Audio Sample Rate set to Original in almost every case. Most VOC files are 8000, 11025, or 22050 Hz; some 16-bit-era files are 44100 Hz. The encoder will match your source. Only pick a fixed rate (44100 Hz is a safe choice) if your target software demands it or if the source rate is one your playback chain doesn't handle well.
Match the source. Most VOC files are mono — picking Stereo only doubles the bitrate without adding any information (the second channel will be a duplicate). If you know your source is stereo (rare; only some 16-bit Sound Blaster captures), pick Stereo. When in doubt, use Original.
VLC media player, Audacity (with FFmpeg), SoX, foobar2000 (with the appropriate input plugin), and a handful of legacy Creative Labs utilities can read VOC. Windows Media Player, Apple Music, Spotify, the iOS / Android stock players, most car stereos, and most browsers cannot. That gap is the whole reason to convert: WMA plays natively on Windows, and any platform that runs VLC handles it too.
WMA is the right pick if your audience is on Windows and you want small files. If you want maximum compatibility across iOS, Android, macOS, web, and car stereos, convert VOC to MP3 instead — MP3 plays everywhere. If you want a lossless archival copy with no codec loss at all, convert VOC to WAV (RIFF PCM) or VOC to FLAC (compressed lossless). VOC → WMA is best when you're targeting Windows desktops and care about file size.
Yes. Many VOC captures from DOS-era utilities concatenate multiple effects in one file. Use the Trim controls to enter a start time and duration in seconds (12.5) or HH:MM:SS.sss (00:00:12.500). Only the selected segment is encoded.
The conversion preserves the source; it can't add information that isn't there. Most VOC files are 8-bit mono at 11025 or 22050 Hz, which is intrinsically grainy and band-limited compared to modern 16-bit/44.1 kHz audio. That's the format's native fidelity. The right WMA preset will keep what's there transparently — but it won't restore highs the original Sound Blaster card never captured.
Not natively. macOS does not include a system WMA decoder; iOS and core Android do not either. VLC plays WMA on all three. If your audience uses non-Windows devices, MP3 is the safer container — see convert VOC to MP3 or WMA to MP3 to re-encode after the fact.
Almost always, yes. An uncompressed 8-bit/22050 Hz mono VOC is roughly 1.3 MB per minute; a Medium-preset WMA of the same audio is around 720 KB per minute — roughly 45% smaller. For 16-bit/44.1 kHz stereo VOCs the savings are larger still (around 80-90% reduction at Very High preset). If you need an even smaller file, use Compress WMA on the output, or extract just the segment you need with Audio Cutter.