Quarterly figures claim that Amazon is still in the lead for smart speaker shipments, hitting 6.6 million units in the past three months, according to Canalys. Google has fallen from second place, as Baidu leapt ahead to 4.5 million units, edging out Google’s 4.3 million. However, reports from China suggest that actual usage of these speakers remains very low. If accurate, this lack of interaction highlights the importance of the ecosystem to the experience. China’s total quarterly shipments reached 12.6 million, up by more than 100% in the quarter, and now more than double the 6.1 million units that were shipped in the US, which declined 2.4% in the quarter. Fourth place went to Alibaba, on 4.1 million units, up…