Emax

Hi Tristan!

May I ask how that effects your work, your end sound designs?

This is getting very interesting because I can now see the Emax I, II,  
EII, EIII, & EIV differently in terms of individual sound qualities in  
ways I never
did before.

I used to do a lot of these conversions with SoundHack...


On 22 Jul 2009, at 08:03, tristanupton wrote:

> Well, actually you do get the equivalent of 1MB of 16 bit samples in  
> the Emax I. A 1MB (16 bit) Emax II bank can be saved on a single  
> floppy as a 512kB (8 bit) Emax I bank and loaded into an Emax I.  
> Likewise, a 512kB Emax I bank can be loaded into a 1MB Emax II.
>
> Your description sounds like how the Sequential Prophet 2000 stores  
> 12 bit data in memory. The Emax only has 512kB of sample memory but  
> can store 18.8 seconds at the 27.7k sampling rate (18.8 x 27.7k =  
> 512k). The Emax floppy disk format also only allows for storage of  
> 512kB of sample data. For the method you describe to be correct the  
> Emax would need to have 768kB of sample memory to provide this  
> sampling time and it would be unable to store this on a single  
> floppy disk!
>
> My understanding is that the Emax digitally compresses each 12 bit  
> linear sample word from the ADC to an 8 bit compressed sample word  
> using a non-linear algorithm (similar to A-law/u-Law companding).  
> The sample data is stored in memory and saved to disk as 8 bit data  
> but the Emax converts each sample word back to linear 12 bit on the  
> fly for output to the DACs and for sample dumping etc. I believe the  
> Emulator II works in much the same way except its data companding  
> occurs in the ADC/DAC chips.




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