Switching decoders

Switching decoders

A mini-guide for Ruach Studio 2.0.7 and later.

The decoder (the VAE) is the last step of every take: it turns what the model wrote into the sound you hear. Since 2.0.7 the Studio offers our own RS x3 v1 (the default) and RS x3 v2, and m-a-p's Standard when you ask for it. The story behind them is in Ruach Studio 2.0.7 and in the study.

For a new song

• Pick the decoder in the song form, or in ☰ → VAE. Engine → Compute holds the same choice.
• Your pick is used for every take you make next, until you change it.

For a take you already made

• Open the take and use its own VAE switch. The Studio decodes the take's kept music again with the other decoder, in seconds, without generating the song again.
• This works for takes made before 2.0.7 too, so an old favourite can be heard through v1 or v2.
• A take decoded earlier with Legacy or the 0.666 Blend keeps its decoder's name.

Which decoders the lists offer

• Engine → Defaults → Decoders offered holds up to three decoders, at least one. Our two are ticked by default; tick Standard to add it back.
• Standard still encodes covers and uploads, whatever you tick.

If v2 is missing

• A new install fetches v1 with what a song needs; v2 comes with the extras. Fetch the extras and v2 appears in the lists.

Good to know

• On NVIDIA cards both RS decoders run in true float32, so what you hear matches the reference decoder to the rounding.
• Listen with your own ears: compare one take decoded both ways in the compare window (First against Second, with an A–B loop).