How does Bing’s voice search compare to Google’s?

Google remains the dominant player in search marketing, but the industry is changing very rapidly and the old certainties may erode. Does voice search provide a platform for Microsoft to compete? A study earlier this year revealed that Microsoft’s speech recognition technology demonstrated only a 5.1 percent word error rate in Switchboard, a conversational speech recognition task

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How does Bing’s voice search compare to Google’s?