Originally Posted by AlphaWolf_HK
Even the faster single core CPU's can do this. Having a dual core just sweetens the deal because these are easily done in separate threads. Not only that, but these operations can be done with much lower latency in software than they can be done in hardware.
It depends on the type of audio processing. Multiple simultaneous 3D voices over speakers aren't problem even for single core processors. But 128 simultaneous 3D voices with HRTF is much more demanding and will reduce performance on a single CPU system.