[sdiy] Henry, 256 Bw limited!

Tom Wiltshire tom at electricdruid.net
Sat Dec 26 14:37:59 CET 2009


On 26 Dec 2009, at 08:54, karl dalen wrote:

> - Den fre 2009-12-25 skrev Andre Majorel <aym-htnys at teaser.fr>:
>> Från: Andre Majorel <aym-htnys at teaser.fr>
>
>> One thing that has annoyed me about wave table oscillators
>> is the
>> limited bandwidth. I kept wondering why the Monowave
>> sounded
>> muffled when its filter was, according to Paul, open. And
>> it has
>> 256 points per cycle. I wonder what it's like with 16 or
>> 10.
>
> Muffled? From where do you get the impression that
> 256 point single cycle table are limited in bandwidth?
> Are you sure Pauls filter was really open?

You've got a point, Karl. If you had half the samples in the table at  
'max' and half at 'min', you'd have a naive square wave with  
theoretically infinite bandwidth. And you could do the same with a  
table with 16 points, or 8, or 4, or even 2!

T.





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