Emax

Hi
!!!!  David Rossum has many US patents, as an individual and as a member of
a team. He has patented many of his ideas, especially after Dave Smith
borrowed his polyphonic synthesizer ideas in 1978 for the Prophet 5.

Here is just one example - this is the basis of the microcontroller in the
Drumulator which enables samples to be read from ROM.

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=2&u=/net
ahtml/search-bool.html&r=74&f=G&l=50&co1=AND&d=ptxt&s1=rossum&s2=david&OS=ro
ssum+AND+david&RS=rossum+AND+david

Or this one from the G Chip in the Proteus and Emax II.This new
interpolation alogirthm for sample replay uses 7 or 8 surrounding points,
this is how Dave got to 10 octave tranpsoition AND lots of voices..

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=2&u=/net
ahtml/search-bool.html&r=64&f=G&l=50&co1=AND&d=ptxt&s1=rossum&s2=david&OS=ro
ssum+AND+david&RS=rossum+AND+david

Dave is a very clever guy, and he is still creating new sampling ideas for
Creative. If you want a list of patents in an E-mu sampler check out the
user manual which lists them. Its a list of all E-mu Systems patents,
including Scott Wedges touch sensistive pads on the SP-12/SP1200 (even on an
ESI-32....) Scott is also still creating ideas and has recently talked about
a new US Patent.

Regards
Rob



  Cool,

  I searched the US patent database for Rossum. Funny he has only one
  patent that I could find easily called:

  "Digital sampling instrument employing cache memory  <A digital
  sampling instrument for multi-channel interpolatative playback of
  digital audio data stored in a waveform memory provides improved
  interpolation of musical sounds by use of a cache memory.>"

  This is filed under Creative in 2002. I wonder if this is the
  famed "wide transposition" algo. Cool either way.

  Thanks for the info.




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