Neural Network Toolbox

Multiple Neuron Adaptive Filters

We may want to use more than one neuron in an adaptive system, so we need some additional notation. A tapped delay line can be used with S linear neurons as shown below.

Alternatively, we can show this same network in abbreviated form.

If we want to show more of the detail of the tapped delay line and there are not too many delays, we can use the following notation.

Here we have a tapped delay line that sends the current signal, the previous signal, and the signal delayed before that to the weight matrix. We could have a longer list, and some delay values could be omitted if desired. The only requirement is that the delays are shown in increasing order as they go from top to bottom.

Noise Cancellation Example

Summary

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