Apple's Siri digital assistant has a female voice in the US - Siri has always been "she" here. In other countries, sometimes Siri was introduced with a male voice instead (hence the gender-neutral name "Siri"). In the UK, for example, Siri has a male voice - an English-sounding male voice. In iOS 7, Siri has been upgraded; apart from allowing more interaction with apps and so on, you can now also easily pick a male or female voice for Siri, to suit your preference. The updated female voice in particular seems to sound more "human" - less robotic - than previously.