(Fphil) Windowed signal filtering followed by summation, as knock wave recognition process, was offered by the new integrated chips which came on the market in the 90's. On our days, one can find fast cross-correlator which allows to identify wave patterns. Hence, as it is done for the Reversys sytem (www.sensitive-object.com/-ReverSys-R-) one can fancy that possible knock signals are tested for correlation with effective knock signals previously recorded (or processed by whatever "neuromorphic" toy).

Meanwhile, we get the TI chip ;). I would suggest that the Vems interface offered as a core the same fonctions that the TI chip, as they are, using the same TI designation and names.