from G3PLX: Hello Sami. Thanks for joining the discussion - I feared I was on my own for a while! I hope some others will contribute too, so I don't get accused of hogging the bandwidth (or perhaps generating too much noise!).
You said: >If your low 8 bits are truly random with no input, that's a good >thing! It follows that when you inject a non-random signal, it will >stand out clearly from white noise. Let me be simple-minded and respond:- But if my low 8 bits are truly random and I inject an 8-bit sinewave, isn't it then level with the noise? If I could reduce my 8 bits of added noise to, say, 4 bits, wouldn't my sinewave then be 24dB above the noise? I don't see how adding that much noise can ever be a good thing to do. I am not trying to trap you, I really would like to understand what's going on here. This is all new stuff to me. I had a private email from a broadcast engineer who confirmed what I was saying about dither noise. He said they added 0.5 bits-worth of white noise to the analogue signal before digitisation, and subjectively that was the best result. But that's half a bit of dither, not 8 bits. 73 Peter _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
