Talk:Digital down converter

• In digital signal processing, a digital down-converter (DDC) converts a digitized real signal centered at an intermediate frequency (IF) to a basebanded complex signal centered at zero frequency
  • What is the difference between a real signal and a complex signal?
  • Do non-digital down converters also exist?

--Abdull (talk) 12:11, 24 August 2008 (UTC)

• A complex signal is an analytic signal that is represented by samples that are complex numbers instead of real numbers.
• Analog downconverter exist; they work just like a digital down-converter, but mixing and filtering are done :with analog components. Downsampling isn't present because there is no sampling.

-- wjl (talk) 16:06, 14 July 2010 (UTC)