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Old July 10th 07, 02:11 AM posted to alt.radio.broadcasting,alt.radio.digital,rec.radio.shortwave
Max Power Max Power is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 16
Default NICAM vs DVB vs DAB (original design)


Pros and cons of NICAM vs DVB vs DAB (original design)

Disadvantages

NICAM
-- J.17 Emphasis curve
-- 32 kHz sample rate
-- 14 bits vs 16 bits of modern systems; requires resampling for 16 bit
origin material

DVB (aka AAC)
-- Codec complexity, coding time
-- Ogg Vorbis may have a better FFT

DAB (Musicam)
-- Not as efficient as AAC
-- FFT and filterbank perhaps too simple
-- Does not support 24 bit audio, only 16 bits

Still, if one were designing a DAB system in the mid-1980s ... NICAM is near
perfect.
-- IF AND ONLY IF "RDS" datastream is added