SynthMaker

confusion on allocation of memory to 'Mem Create'

Archive · 2006 3 old posts

From the original SynthMaker forum (2004–2014), with its members’ names and dates.

angstrom ·

Hi, I find that I have to assign more memory to "Mem Create" than my simple maths would suggest is correct.

EG:

for 2 seconds of stereo memory at 44100 I would guess 44.1k*2 = 88,200 * 2secs = 176,400.

so on the Int input on the Mem (buffer) I would think 176,400 would give me enough samples - but I tend to find that it isn't enough somehow. The output tends to cut off at about a quarter of where I think it should!

the 'quarter' figure implicates SSE, which points to a specific part of my OSM, the "Mem Read" which absolutely insists on being POLY, no matter what I try and do to make it accept a mono index.

Why does the "Mem Read" appear as a generalised stream type (grey wibble connector), yet on connecting it to a mono section it turns into 'poly' ?

really strange. It only wants to be Poly, It will not be mono

I will try and cook up a basic OSM that demontrates all this - as the one I am working on is very complex and full of fun.

the main issues being : Why does the mem create seem to require 4 time the amount of space and is it related to this Poly obsessed Mem Read ?

sambean ·

It's because the Mem Create input is in Bytes (8-Bit number), and each floating point number has 4 Bytes (32-bit float).

It should really be on the modules tooltip help as this isn't immidiately obvious, I recall being confused when the module first came out.. I'll perhaps add this into the wiki in a bit..

Sam

oddson ·

As for the other part... mem read takes it's type from the right hand side. If you connect to a mono output it will show mono.

But there is a bug there. If you connect to a right-hand-side defined stream it will take that type but when you disconnect the channel you didn't connect to will still have the type you chose. But its only a display problem.

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