[Fpga-synth] phLUTe

[Eric Brombaugh]

On Mar 31, 2008, at 8:37 PM, Scott Gravenhorst wrote:

> Eric Brombaugh <ebrombaugh at earthlink.net> wrote:
>> BTW - I notice on your block diagram you've got a DC blocking  
>> circuit.
>> I've been doing DC blocks for many years and there was just an
>> interesting thread on comp.dsp newsgroup about such things. Just  
>> curious
>> about how you did yours.
>
> I used this one:
>
> http://ccrma.stanford.edu/~jos/filters/DC_Blocker.html#21355
>
> I haven't messed with R even though my sample rate is higher than  
> 44.1 KHz.  It worked
> with 0.995, so I left it that way.

Ok - that's a classic 'differentiator & leaky integrator' design.  
That's one of the more popular approaches.

Eric