If you've ever applied for a job, you know how crucial nailing the interview is. Interviewing.io is a program that focuses on only the interview, removing prior credentials such as college, age, gender, and other factors. Yet, the website's founder noticed that men were 1.4 times more likely to advance to the next round of interviews, and men scored higher by .5 than women on a 5 point scale, suggesting gender bias simply by the sound of someone's voice.

Source: https://www.washingtonpost.com/news/innovations/wp/2016/07/15/this-tool-gender-swapped-the-voices-of-tech-job-candidates-heres-what-happened/?platform=hootsuite