| CONSUMER ELECTRONICS |
| Case Study |
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| Reference design
for audio CD player |
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| The challenge |
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To
develop a reference design for audio CD player
based on SOC with a micro-controller and 2
DSP processors |
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To
achieve the correct balance between MIPS and
memory on a simple 24bit fixed point DSP processor |
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Software
partitioning across 2 DSP processors |
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Development
using assembly language due to absence of
high level language compilers for the DSP.
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Integration
with the customer supplied micro-controller
module |
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| The solution |
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Wipro
provided consultancy to the customer on the
hardware architecture |
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Floating
point operations were specially coded for
fixed point DSP |
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Wipro
developed modules of the player like the audio
decoders for supporting raw audio, WAV, MP3,
WMA and more, CDROM decoder performing Reed-Solomon
error detection and correction, CDROM file
systems (ISO9660 & UDF), sample rate converter
for audio post processing, application for
CDROM |
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Optimizing
various algorithms to ensure a small foot
print and to ensure real-time throughput to
meet good quality audio output |
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Overcame
real-time debugging on multiple DSPs using
in-house developed tools |
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| The benefits |
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Feature
rich audio CD player supporting all popular
audio formats for personal, home and automotive
markets |
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Memory
optimizing saved the customer’s hardware
cost of the product |
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Outsourcing
the total solution allowed the customer to
focus on their own priority work |
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