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Hi, I am working on DSP module of Ne10. I see there are fixed-point and floating-point FFT inside Opus. Is fixed-point FFT only a fall back for CPU without VFP? On ARMv7-A and ARMv8-A, benchmark result shows that fixed-point (int32) and floating-point (float32) FFT have similar performance. I guess fixed-point version is not often used on these platforms. Is it worth the effort to NEON-optimize

...rsion is not often used on these platforms. Is it worth the > effort to NEON-optimize fixed-point FFT? Floating point units are optional on the ARM Cortex-M series so I believe it might still be worth while. The Cortex-M3-7 are based on the ARMv7 architecture. [1] https://en.wikipedia.org/wiki/ARM_Cortex-M#Instruction_sets