Which company first introduced voice search capability in a commercial dictionary product, allowing users to hear pronunciations and search by speaking?

The dictionary is perhaps the most fundamental product in language and linguistics, evolving significantly over centuries. While traditional dictionaries were once limited to print editions updated every few years, modern dictionaries have undergone radical transformation in both form and function. This poll tests your knowledge about a groundbreaking innovation that changed how we interact with dictionary products in the digital era.

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Oxford University Press with the Oxford English Dictionary app (2011)
Merriam-Webster with their Collegiate Dictionary app (2010)
Cambridge University Press with their English Pronouncing Dictionary (2013)
Dictionary.com with their mobile application (2012)