[Haskell-cafe] Sample rate inference

Jeremy Shaw jeremy.shaw at linspireinc.com
Thu Nov 11 12:58:24 EST 2004


This sounds vaguely like the encryption modulus problem dealt with in
this paper:


"Function Pearl: Implicit Configurations -- or, Type Classes Reflect
the Values of Types".

Though, I have not thought about it too hard...

Jeremy Shaw.

At Thu, 11 Nov 2004 10:49:13 +0100 (MEZ),
Henning Thielemann wrote:
>  I want to connect several functions for signal processing. The typical
> case is that in a network of signal processor there are parts that are
> already discretized such as sampled sounds, and there are processors with
> no particular sample rate such as amplifiers. But when it comes to
> computation each processor must choose a sample rate for processing. There
> are also processors for converting sample rates. They divide the network
> into components of equal sample rate.
>  The computation sample rate should be propagated through the network as
> follows:
>   If in a component of equal sample rate some processors have the same
> fixed sample rate, all uncertain processors must adapt that. 
>   If some processors have different fixed sample rates this is an error. 
>   If no processor has a fixed sample rate, the user must provide one
> manually.
>  To me this looks very similar to type inference. Is there some mechanism
> in Haskell which supports this programming structure? 
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