Have you noticed this too? Women are getting deeper voices, at least those who are kicking and shoving in the public arena. I thought it was due to hormonal changes, plastics and all that. But, there is more:
https://www.bbc.com/worklife/article/20180612-the-reasons-why-womens-voices-are-deeper-today
“If you listen to radio programmes from the 1940s and 1950s you’ll notice some striking differences between the way that people spoke then and how we express ourselves today.
The most noticeable change can be heard in their accents. Language is not static but dynamic, constantly evolving to suit the fashions of the time and this results in a shift in pronunciation.
In the UK, for instance, far fewer people talk with “received pronunciation” these days – and even Queen Elizabeth II’s voice has lost some of the cut-glass vowels of her youth. This is thought to reflect a more general shake-up in Britain’s social hierarchies, leading to a kind of linguistic cross-pollination between the classes that has even reached Her Majesty.
But once you move past those accents, you’ll find another social transformation mirrored in our voices: women today speak at a deeper pitch than their mothers or grandmothers would have done, thanks to the changing power dynamics between men and women.
Cecilia Pemberton at the University of South Australia studied the voices of two groups of Australian women aged 18–25 years. The researchers compared archival recordings of women talking in 1945 with more recent recordings taken in the early 1990s. The team found that the “fundamental frequency” had dropped by 23 Hz over five decades – from an average of 229 Hz (roughly an A# below middle C) to 206 Hz (roughly a G#). That’s a significant, audible difference.
The researchers had carefully selected their samples to control for any potential demographic factors: the women were all university students and none of them smoked. The team also considered the fact that members of the more recent group from the 1990s were using the contraceptive pill, which could have led to hormonal changes that could have altered the vocal chords. Yet the drop in pitch remained even when the team excluded those women from their sample.
Instead, the researchers speculated that the transformation reflects the rise of women to more prominent roles in society, leading them to adopt a deeper tone to project authority and dominance in the workplace.
Former UK prime minister Margaret Thatcher employed a professional speech coach to help her to sound more authoritative, deliberately dropping the pitch of her voice by a massive 60 Hz. And while most of us may not go to such great lengths, recent research shows that we all spontaneously adapt the pitch of our voices to signal our perceived social rank.
In one experiment, Joey Cheng of the University of Illinois at Urbana-Champaign asked groups of four to seven participants to perform an unusual decision-making task that involved ranking the items that an astronaut would need to survive a disaster on the moon. And at the end, she also asked each member to (privately) describe the pecking order of the group and to rank each member’s dominance.
Recording the participants’ discussions throughout the task, she found that most people quickly shifted the pitch of their voice within the first few minutes of the conversation, changes that predicted their later ranking within the group.
For both men and women, the people who had lowered their pitch ended up with a higher social rank, and were considered to be more dominant in the group, while the people who had raised their pitch were considered to be more submissive and had a lower social rank. “You were able to predict what happened to the group, in terms of the hierarchies, just from these initial moments,” Cheng says.”
My guess is that as women’s voices get deeper, men’s voices are becoming higher pitched. That must be due to hormones and emasculation, if not total castration.