Remember you can always share any sound with your friends on social media and other apps or upload your own sound clip. They are identifiying, ‘Here is a particular speaker, here is a particular facet of that speech which captures what I find so engaging. Benjamin Munson of the University of Minnesota says, ‘Everyone is presented with lots and lots of models of what language should sound like.

In the film, one expert suggests that growing up in male-dominated or female-dominated households can make the difference – regardless of sexual orientation. The answer, he found, could be to do with childhood role models – and not directly related to sexuality. Film-maker David Thorpe interviewed experts for his New York Times documentary video – and contrasts the experiences of a straight man with a high voice he admits sounds ‘gay’, and a gay man with a deep voice.