🚀 go-pugleaf

Loughborough Sound Images Ltd
The Technology Centre
Epinal Way
Loughborough
Leicestershire LE11 0QE
England

tel + 44 509 231843
fax +44 509 262433


They provide a range of DSP boards that fit inside the IBM expansion slot.
The one I use based on the TMS320c25 with 1 channel 16 bit ADC and DAC.
It is really old hat technology now.  The rest of the group use the AT&T
DSP32, with dual channel 16 bit ADC and DACs.  Both boards are supported
by hyperception's hypersignal software.

Note because of noise the ADC's are only rated at 12 bits and 14 bits d
dynamic range.

We program the boards in assembly language but I believe cross compliers
are available (for a price).

The catch is the boards are quite expensive, my TMS cost 1300 pounds, while
the DSP32 cost about 2000 pounds (without the Debugger).  Considering
a pound to dollar conversion rate of 1.90, plus your Value Added Tax
makes them very expensive.


note the boards have the usual external ram, interrupt timers, (and some-
times dma).

The guy next door has justed prototyped his own DSP32 development card
with dual channel sigma delta converters.  He claims a dynamic range
of 15.5 bits from his 16bit converters.  Also the sigma delta have an
internal aliasing filter at half the sampling rate.  His timer is also
a programable interger of 1 Hz (70 - 50k) I think. And uses zero wait
state (20ns) sram upto 256 k external.  He says its a better board and
is trying to get a supplier to stock it.



anyway the IEEE spectrum is full of advertisements for dsp boards.  ie the
Tiger boards ...


Kamlesh Masrani

direct email - kam@uk.ac.hull.ee.comms.