dsf to wav : what CPU power ?

[simoncn]

There is a list of registered MIME types on this page. For streams that match one of these types, the registered type should be used.

Many of the audio streams in common use don't match any registered type. In this case, the convention has been that a type starting with 'x-' should be used to indicate that the type is not one of the official ones. There is no list of the 'x-' types and these become "standard" by accepted usage rather than by inclusion in a formal list. This approach was recommended by the MIME type specification for many years (see section 2.1 of this document) but the recommendation has now been changed (see this document), so I should not have described Sonore's choice as "not correct" in my previous post.

Unfortunately, the water has become quite muddy over the years with different type names used by different products for the same stream, including an apparently random mixture of types with and without the 'x-' prefix. This has caused compatibility problems between streamers and renderers and is a generally unsatisfactory situation.

Each stream advertised by the server has a single MIME type. However, the renderer can advertise compatibility with multiple MIME types for the same stream type. Sonore is already doing this for some streams (e.g., audio/flac and audio/x-flac). The fix for Sonore is therefore not to change the existing DSD types such as audio/dsf but to add new types such as audio/x-dsf alongside existing types such as audio/dsf.