SND vs WV
A detailed comparison of NeXT Sound and WavPack Audio — file size, quality, compatibility, and which format to choose for your workflow.
NeXT Sound
Audio FilesSND (NeXT Sound) is an audio file format originating from NeXT computers and later adopted by Sun Microsystems as the AU format. It stores audio with a simple header and supports various encodings from 8-bit mu-law to 32-bit floating point.
About SND filesWavPack Audio
Audio FilesWavPack is an open-source audio codec that offers lossless, lossy, and hybrid compression modes. Its unique hybrid mode creates a lossy file plus a correction file that together reconstruct the original, enabling flexible storage strategies.
About WV filesStrengths Comparison
SND Strengths
- Historical NeXT archive format.
- Compatible with Sun AU.
- Simple header structure.
WV Strengths
- Hybrid lossy/lossless mode.
- Supports DSD, 32-bit float, multichannel.
- Competitive compression vs FLAC.
- Active maintenance since 1998.
Limitations
SND Limitations
- Legacy — no new content.
- Ambiguous — NeXT .snd and Mac .snd are different formats.
- Requires specialized tooling for Mac resource-fork variant.
WV Limitations
- Small ecosystem.
- Hybrid mode complexity.
- Hardware support limited vs FLAC.
Technical Specifications
| Specification | SND | WV |
|---|---|---|
| MIME type | audio/basic | audio/x-wavpack |
| Extension | .snd | .wv (main), .wvc (correction) |
| NeXT variant | Identical to Sun AU | — |
| Mac variant | HFS resource fork format | — |
| Modes | — | Lossless, Hybrid lossy+correction, 32-bit float |
| License | — | BSD-style |
Typical File Sizes
SND
- NeXT System alert 5-50 KB
WV
- 3-min song (CD lossless) 18-24 MB
- 3-min hi-res 24/96 60-90 MB
Ready to convert?
Convert between SND and WV online, free, and without installing anything. Encrypted upload, automatic deletion after 60 minutes.
Frequently Asked Questions
SND (NeXT Sound) is an audio file format used to store sound recordings — music, voice, podcasts, sound effects. The format defines how the audio samples are compressed (or stored raw), what bitrates are supported, and how metadata such as title, artist, album, and cover art is embedded. It is part of the audio files family.
SND (NeXT Sound) is an audio formatoo de arquivo used to store sound recordings — music, voice, podcasts, sound effects. The formato defines how the audio samples are comprimido (or stored raw), what bitrates are suportado, e how metadata como title, artist, album, e cover art is embedded. It is part of the audio arquivos family.
VLC, foobar2000, and the default media players on Windows and macOS handle SND natively. On mobile, iOS Music and Android media apps vary in their support — popular formats work everywhere; niche ones may need a dedicated app. If playback fails on a device, converting to MP3 or AAC usually solves it.
VLC, foobar2000, e the default media players no Windows e macOS handle SND natively. On mobile, iOS Music e Android media apps vary in their support — popular formatoos funcionar everywhere; niche ones may need a dedicated app. If playback fails em um device, convertendo to MP3 ou AAC Geralmente solves it.
Upload the SND to KaijuConverter and pick MP3, WAV, FLAC, AAC, OGG, or any other target. Our FFmpeg pipeline decodes the audio and re-encodes to the target format at sensible default bitrates (VBR ~190 kbps for music, 96 kbps for speech). Metadata and cover art travel with the audio where both formats support them.
SND can be lossy or lossless depending on the specific variant. Lossy variants (smaller files) discard some audio detail during compression in ways tuned to be inaudible; lossless variants preserve every sample exactly but produce larger files. For distribution, lossy at high bitrate is standard; for archival, lossless wins.