CPU intensity of resampling

[geoffw64]

Hey Dan,
I have a question about resampling, as it seems to be expensive in terms of CPU.

Declarations:
univector audio_resampled(2229);
univector audio(2048);
samplerate_converter resampler = samplerate_converter(resample_quality::draft, 48000, 44100);

For each chunk of 2048 samples:
resampler.process(audio_resampled, audio);

This consumes approx. 40 sec CPU to process 4.9 million samples, on my 2018 Mac Mini (2.7GHz Core i5 with 6 cores). Is there are less CPU intensive way to do this?

Appreciate your help.

Thanks in advance,
Geoff.