I could not try with 64 bit but a sample size between 8 and 32 bit did 
not make any difference to the noise. In general I think, butterhp 
should sound like the butterbp- example I put in instr 1 for comparison 
also with 16 bit integers, but it does not.


Best regards,

Jan Jacob


sound         |         movement          |          object         |   
        space
sonic architecture       |        site: http://www.sonicarchitecture.de
spatial electronic composition     |    2nd order ambisonic music 
  

Jan Jacob Hofmann wrote:

> I could not try with 64 bit but a sample size between 8 and 32 bit did 
> not make any difference to the noise. In general I think, butterhp 
> should sound like the butterbp- example I put in instr 1 for comparison 
> also with 16 bit integers, but it does not.

I did not mean 64 bit samples, but rather a version of Csound that
uses 64 bit floats internally.