Re: [Octal-dev] re: stereo machines + design question

[Yannick Chapuis]

> Could you explain a bit more about "height tracks diffusion"? Is this a
> real-time calculation?

eight-tracks diffusion is just an example of multi-diffusion often used for
installations, contemporary music and especially concrete music. It's a way to
compose which considers the output signal to be produced not only as a 
stereo-like
(which means L&R channels are higly correlated) but as n independent mono 
signals
played separately on each output of the audio device(s). Thus, when the 
processor
(usually) gets an interrupt from the audio device(s) for the output buffers to 
be
filled, the mixing routine has to calculate every audioFX, automation (...) 
applied
on each independent track and transmit the resultant sample blocks to the 
device(s).
Of course, the number of audio sources only depends on the composer's desires 
and
could be up to 100.

> No. the OCTAL API supports machines with full stereo in and out (and the
> Aux input for special tasks such as vocoding, coming Real Soon Now), so
> there is no need to use two mono vocoders.

could you explain a bit more what is the Auxiliary Input ? Is it a stereo one ? 
How
many Aux do you plan ? Is it possible to divide/merge multiple aux to control an
input signal ? Vocoding is one (great) thing but let's imagine you have a stereo
track processed by audio plug-ins : what about using external signals to control
these FX, a bit like multiple not-so-Low Frequency Oscillators ?

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