Denormal and SSE instructions.

[WilliamK]

I've stumbled across this thread from the front page links and having read through it (and not understood about 90% of it ) I noticed one of WilliamK's later posts that sort of stated that the 3gig+ P4's have been denormal fixed, or am I missing something?

I don't have official info, but users with those machines are not getting spikes at all. That's all I can say.

Wk

[WhiteNoise]

I think you need to add a bigger DC offset william or maybe there are some other places where a DC offset is needed.

[Borogove]

Thanks Borogove, but for the filter I'm using, it just won't solve the problem. I tested.

Did you try injecting AC at 1e-10 or so?

[WilliamK]

Thanks, so far I tried 1e-15, but I will try higher. Now I'm working on some other new codes. After that I will run some more tests, some users are willing to help, so that's good.

Best Regards, WilliamK

[Miles1981]

AFAIK, denormal numbers is part of the IEEE standard, so they are implemented.

[autloc]

given that at 24 bit (fixed), the LSB is equivalent to around 1e-7, you can certainly add louder noise to your signal than 1e-15 without worrying about it being audible at some stage.