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Performance characteristics of JRiver native convolver on RPi2?

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keylimesoda:
What kind of performance expectations should I have for the linux native convolver on an RPi2?

More specifically:

* How many taps could reasonably be run at what resolution?
* Is the convolver using FFTW libraries?  If so, which version?
* Is the convolver optimized to use the ARM NEON SIMD instruction set?
* Any chance of adding support for GPU_FFT on RPi/2?
* How does the JRiver convolver compare to jconvolver or BruteFIR?   

 

mattkhan:
Can't help you with jriver perf but http://www.audiovero.de/en/preamp-14-cleanvolver.php might give you a data point, iirc this can do 2 channels at 64k taps.

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