MarkAren wrote:
> Hi All,
>
> I am just about to start a reasonably simple DSP project processing
> audio (mainly filtering), I need 24 bit data, on board 8kw FLASH and
> 4kw RAM, > 30MIPS and low cost development environment.
>
> I need a small parts count so I can interface an AES/EBU (S/PDIF) audio
> RX to a DAC -- I2S is the obvious interface.
>
> Are there any newer DSPs that support this audio interface directly as
> well as on board memory so I can end up with a low parts count solution
> ?
>
> Given I have a reasonably open hand with this project I though that I
> might look at other candidates while I am at it.
>
> Any recommendations ?
>
> Thanks,
>
> Mark.

Hi,

Maybe SigmaDSP processors from Analog Devices are the option that you
need. The SigmaStudio environment will make you happy for designing
your algos quickly. From the website (www.analog.com/sigmadsp)

SigmaDSP=99 Digital Audio enables anyone to use a fully programmable
audio DSP that is easily configurable through the SigmaStudio=99
Graphical Development Tool. The first generation SigmaDSP products,
including the AD1953, combine three high-performance audio DACs with
the powerful DSP core. The second generation parts, the AD1940 and
AD1941, feature higher processing power with more I/O channels.

Just introduced, the ADAU1701 and ADAU1702 incorporate full analog I/O
and stand-alone functionality to provide a full audio processing system
on a single chip. The ADAV400 has the most processing power in the
SigmaDSP family and includes multichannel analog and digital
connectivity.

SigmaStudio Software is a fully-graphical programming tool which allows
the user to create a signal flow using familiar audio processing
blocks, such as biquad filters, delays, and dynamics processors. This
design can be linked directly to the SigmaDSP hardware and the
SigmaStudio tool can be used as a real-time control surface for the
design's parameters, allowing easy system tuning. Third-party
algorithms, such as Dolby=AE ProLogic=AE II, Waves MaxxBass=AE, and SRS=AE
TruSurround XT=99 are available for the SigmaDSP and integrate
seamlessly into the SigmaStudio environment.

Evaluation kits, including evaluation boards and the full SigmaStudio
tools package, are available now for all SigmaDSP products.

JaaC

Hi All,

I am just about to start a reasonably simple DSP project processing
audio (mainly filtering), I need 24 bit data, on board 8kw FLASH and
4kw RAM, > 30MIPS and low cost development environment.

I need a small parts count so I can interface an AES/EBU (S/PDIF) audio
RX to a DAC -- I2S is the obvious interface.

Are there any newer DSPs that support this audio interface directly as
well as on board memory so I can end up with a low parts count solution
?

Given I have a reasonably open hand with this project I though that I
might look at other candidates while I am at it.

Any recommendations ?

Thanks,

Mark.