A signal processing arrangement is described for signal processing in a bilateral hearing implant system having left side and right side hearing implants. An interaural coherence analysis module analyzes system input signals to produce an interaural coherence signal output characterizing reverberation-related similarity of the input signals. And a stimulation timing and coding module for each hearing implant processes band pass signals to develop stimulation timing signals based on selecting as a function of the interaural coherence signal a stimulation coding strategy from a plurality of different stimulation coding strategies including an envelope-based stimulation coding strategy based on the band pass envelope, and an event-based stimulation coding strategy based on the temporal fine structure features, producing the stimulation timing signals using the selected stimulation coding strategy, and switching between different selected stimulation coding strategies as a function of changes in the interaural coherence signal.
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