DSF vs SPX
Um comparativo detalhado de DSD Stream File e Speex Audio — tamanho de arquivo, qualidade, compatibilidade e qual escolher de acordo com seu fluxo de trabalho.
DSD Stream File
Audio FilesDSF (DSD Stream File) stores Direct Stream Digital audio data with metadata support. DSD uses single-bit sigma-delta modulation at very high sample rates (2.8 MHz and above), providing extremely high resolution audio favored by audiophiles.
Sobre os arquivos DSFSpeex Audio
Audio FilesSpeex is an open-source audio compression format specifically designed for speech encoding. It uses Code-Excited Linear Prediction (CELP) and supports narrowband, wideband, and ultra-wideband modes for different speech quality requirements.
Sobre os arquivos SPXComparativo de vantagens
DSF Vantagens
- Preserves SACD audio bit-exact.
- Appeals to audiophiles who prefer DSD-encoded content.
- Sony-supported and documented.
- High-end DACs natively decode DSD without PCM conversion.
SPX Vantagens
- Patent-free voice codec.
- Three sample-rate modes for voice.
- Low CPU decode.
Limitações
DSF Limitações
- Enormous file sizes (2-5 GB per album).
- Specialized hardware required for native playback.
- Blind listening tests struggle to distinguish from well-produced 24-bit PCM.
- Niche — overwhelmingly targets the audiophile market.
SPX Limitações
- Deprecated in favor of Opus.
- No music support.
- Rarely used in new projects.
Especificações técnicas
| Especificação | DSF | SPX |
|---|---|---|
| MIME type | audio/x-dsf | audio/speex |
| Extension | .dsf | .spx |
| Sample rate | 2.8224 MHz (DSD64); 5.6448 (DSD128); 11.2896 (DSD256) | — |
| Bit depth | 1 bit (Sigma-Delta modulation) | — |
| Container | Sony proprietary (similar to DFF) | Ogg |
| Modes | — | Narrowband/Wideband/Ultra-wideband |
| Successor | — | Opus |
Tamanhos típicos de arquivo
DSF
- Single song (DSD64) 150-300 MB
- Full album (DSD64) 2-4 GB
- Single song (DSD256) 600 MB - 1.2 GB
SPX
- 1 min voice (wideband 24 kbps) ~180 KB
Pronto para converter?
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Perguntas frequentes
DSF (DSD Stream File) 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.
SPX (Speex Audio) 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, e the default media players no Windows e macOS handle DSF 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.
VLC, foobar2000, e the default media players no Windows e macOS handle SPX 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 DSF to KaijuConverter e pick MP3, WAV, FLAC, AAC, OGG, ou any other target. Our FFmpeg pipeline decodes the audio e re-encodes para o target formato at sensible default bitrates (VBR ~190 kbps para music, 96 kbps para speech). Metadata e cover art travel com the audio where both formatoos support them.
DSF can be com perdas ou sem perdas depending no specific variant. com perdas variants (smaller files) discard some audio detail durante compressão in ways tuned to be inaudible; sem perdas variants preserve every sample exactly mas produce larger files. para distribution, com perdas at alta bitrate is padrão; para archival, sem perdas wins.