DSS Pro

Unknown

audio

Digital Speech Standard is a proprietary audio file format for the storage of digital speech recordings, which was jointly developed and introduced by Olympus, Grundig and Philips. The DSS Pro (.ds2) format supports improved sound quality over the original Digital Speech Standard format, and also supports file encryption.

Identify it

Extensions	`.ds2`
Signatures	`03647332` at byte 0 (Digital Speech Standard DSS Pro)
PRONOM	`fmt/1008`

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Open it

Listed for the family; check that the software handles this version.

ExifToolOpen sourcereads · Artistic License / GNU General Public License, version 1.0 or later
FFmpegOpen sourcereads · LGPL-2.1-or-later / GPL-2.0-or-later
PhotoRecOpen sourcereads · GNU General Public License
Photorecoveryreads

Convert it

To	With	Fidelity	Command and losses
FLAC (Free Lossless Audio Codec) 1.2.1	FFmpeg	Lossless	`ffmpeg -i in.dss out.flac` Lossless for decoded audio; a lossy source stays as degraded as it was. WAV may reduce bit depth or drop metadata.
Waveform Audio	FFmpeg	Lossless	`ffmpeg -i in.dss out.wav` Lossless for decoded audio; a lossy source stays as degraded as it was. WAV may reduce bit depth or drop metadata.
Matroska 1-4	FFmpeg	Lossy	`ffmpeg -i in.dss out.mkv` Re-encoded with lossy codecs by default; try `-c copy` to remux without re-encoding when the codecs fit the container.
MPEG 1/2 Audio Layer 3	FFmpeg	Lossy	`ffmpeg -i in.dss out.mp3` Lossy re-encoding.
MPEG-4 Part 14	FFmpeg	Lossy	`ffmpeg -i in.dss out.mp4` Re-encoded with lossy codecs by default; try `-c copy` to remux without re-encoding when the codecs fit the container.
Ogg	FFmpeg	Lossy	`ffmpeg -i in.dss out.ogg` Lossy re-encoding.
WebM	FFmpeg	Lossy	`ffmpeg -i in.dss out.webm` Re-encoded with lossy codecs by default; try `-c copy` to remux without re-encoding when the codecs fit the container.

Sources

PRONOM fmt/1008

From PRONOM. Updated 2017-03-22.

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