[wdmaudiodev] Re: Effects APOs

  • From: Tim Roberts <timr@xxxxxxxxx>
  • To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Wed, 26 Mar 2014 13:52:36 -0700

Matthew van Eerde wrote:
> There's still a "global disable", but it only affects SFX and MFX effects. 
> EFX effects are "always on", even for RAW mode streams.
> Processing that previously went into an LFX should typically go into an SFX.
> Processing that previously went into a GFX should typically go into an MFX.
> Only certain specific kinds of processing should go into EFXs, such as 
> encoding effects that talk to the Kernel Streaming pin factory in a 
> compressed format, or speaker protection effects that are necessary to 
> protect the hardware in the system from vibrations.

Is there a document somewhere that describes the philosophy and how one
makes the choice?  My APO is applying an FIR to correct out-of-bounds
frequency response in a microphone.  An EFX seemed like the right place
for it.

Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.


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