INVERSE FILTERING METHOD, SYNTHESIS FILTERING METHOD, INVERSE FILTER DEVICE, SYNTHESIS FILTER DEVICE AND DEVICES COMPRISING SUCH FILTER DEVICES

摘要

An inverse filtering method, comprising: generating a first filtered signal based on an input signal; and combining the first filtered signal with the input signal for obtaining a residual signal. The generating comprises: generating at least two second filtered signals, each of said second filtered signals not significantly delayed in time relative to each other, the generating being stable and causal; and amplifying at least one of the second filtered signals with a prediction coefficient.