[gmpi] Re: using another plugin API

  • From: George Yohng <george@xxxxxxxxx>
  • To: gmpi@xxxxxxxxxxxxx
  • Date: Fri, 25 Apr 2003 20:08:59 +0300

Hello,

Precisely.. and a long enough signal chain can begin to amount to
computation.

In 'emergency' case, parts of the chain can be grouped as separate blocks, with 32->64 and 64->32 conversion on input/output.

To illustrate my point, look at something like Reaktor which uses a large graph of simple, plug-in-like objects to create customised virtual instruments. Is that a "routing" or a "computation"? :)

Well, NI engineers know that for sure. It could be whatever. :)

A large part of standalone digital audio hardware is using Motorola 56k DSP processors, where most of paths are 24-bit integer. This is, however, not a problem for most of audio engineers.

It's more like a developer issue, than audio engineer's one. 96dB (16 bit) of dynamic range is enough, provided that signal is always full scale. 32-bit FPU gives around 140 dB of dynamic range at any scale (mantissa is normalized).

We never now, but for now 64-bit floating point audio streams do not seem to have any better application than a marketing hype. They would, of course, if new 64-bit processors go mainstream.

Thanks,
George.



Angus F. Hewlett wrote:

On Fri, 25 Apr 2003, Vincent Burel wrote:



non sens ! would like to know where come from the "growing argument..." !!??
for computation , it can be interesting to deal with special precise format
(64 bits float, 80 bit on FPU PC, 64bit integer for some kind of algorithm)



Precisely.. and a long enough signal chain can begin to amount to
computation.

To illustrate my point, look at something like Reaktor which uses a large
graph of simple, plug-in-like objects to create customised virtual
instruments. Is that a "routing" or a "computation"? :)





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