  As a test of general applicability, we use the recently proposed spin-wave
delay line active-ring reservoir computer to perform the spoken digit
recognition task. On this, classification accuracies of up to 93% are achieved.
The tested device prototype employs improved spin wave transducers (antennas).
Therefore, in addition, we also let the computer complete the short-term memory
(STM) task and the parity check (PC) tasks, because the fading memory and
nonlinearity are essential to reservoir computing performance. The resulting
STM and PC capacities reach maximum values of 4.77 and 1.47 respectively.
