-- getSignal signalBuf time_idx = readArray (signalBufferArray signalBuf) time_idx
getSignal :: SignalList -> Int -> Signal
getSignal signals time_idx = (signalList signals) !! time_idx
getSignal :: SignalList -> Int -> Signal
getSignal signals time_idx = (signalList signals) !! time_idx
getSignal signals time_idx = (signalList signals) !! time_idx