[linux-audio-dev] TAP EQ problems

[Tim Goetze]

[Tim Blechmann]

>> Similar approach works fine here, too (flipping the sign of the 
>> addition constant at every sample or every block, depending on the 
>> algorithm in question). 
>> 
>> Inaudible (in fact barely measurable), code is branchless and simple. 
>> Perfect solution for a stupid little problem.

>the denormal handling on the sse unit is far better than on the fpu ...
>it's also possible to enable hardware FTZ/DAZ ...
>
>better a hardware solution than a software solution ;-)

Hard to disagree :)

However, I find SSE only useful from v2 on, not that much faster than 
an AMD FPU, and a pain to code with gcc. It's limited to x86, so 
you'll need portable C code to go with it. Likewise, h/w FTZ for the 
FPU is nice, but not available anywhere.

In the end, I'll rather write and optimize quick and portable C/C++ 
than endure the coding, compilation and maintenance inferno that is 
SIMD. 

Cheers, Tim