How to Feminize Your Voice by Manipulating Vocal Fold Mass

Developing a feminine voice is an important part of gender transition and affirmation for many trans women. While there are many aspects to voice feminization, manipulating vocal fold mass is a key technique for reducing the "thickness" and "buzziness" that contribute to a masculine-sounding voice.

This comprehensive guide explains how to feminize your voice by manipulating vocal fold mass, what vocal fold mass is, how it impacts voice gender perception, and provides exercises to help you gain control and consciously reduce vocal fold mass for a thinner, lighter sound. 


What Are the Vocal Folds?

First, let's understand what the vocal folds are. The vocal folds, also called vocal cords, are two folds of tissue inside the larynx or voice box. When air from the lungs passes through the larynx, the vocal folds vibrate to produce sound.

The larynx is located in the neck, just below the pharynx or throat. The size and shape of the larynx growth is larger in males during puberty due to testosterone.

The vocal folds inside also thicken. This contributes to the lower pitch and "thickness" typical of adult male voices.


What Is Vocal Fold Mass?

Vocal fold mass refers to the thickness and density of the vocal fold tissue. Men typically have thicker, denser fold mass compared to women.

Thicker folds require more lung pressure to start vibrating. Once vibrating, their greater mass causes more vocal buzzing.

Increasing testosterone thickens the vocal folds. This added mass reinforces the low-frequency harmonics, creating the "chesty" timbre of a stereotypical male voice.

By reducing vocal fold mass, we can raise the pitch, remove the buzzy undertone, and achieve a thinner, lighter, more feminine voice.


Why Reduce Vocal Fold Mass?

There are two main physiologic differences between masculine and feminine voices related to pubertal testosterone exposure:

  1. Vocal tract length: The larynx, pharynx, and oral cavity together create the vocal tract. This grows longer in males, leading to lower resonant frequencies. Working on shortening the perceived vocal tract via resonance adjustments helps counteract this effect.
  2. Vocal fold mass: Increased mass directly creates a thicker, chestier male sound. Reducing mass decreases the buzz and allows for a smaller, lighter voice.

While resonance work is very important for voice feminization, directly addressing the source characteristics by reducing vocal fold thickness is also key. This removes the heaviness contributed by the added fold mass before resonance even occurs.


How to Control Vocal Fold Mass

The vibrating mass of the vocal folds can be manipulated by altering:

  • Airflow force - More pressure thins folds. Less allows them to thicken.
  • Vocal fold closure/adduction - Open folds are thinner. Closed folds are thicker.
  • Vocal fold configuration - Engaging more or less fold tissue changes thickness.

Though interconnected, purposefully managing these elements gives us some independent control over vocal mass:


Airflow Force

Increasing lung pressure stretches the folds, causing them to thin. Decreasing pressure allows them to thicken. Think blowing up a balloon versus letting the air out.


Vocal Fold Closure

Opening or "abducting" the folds lengthens and thins them. Closing or "adducting" the folds allows them to thicken.


Vocal Fold Configuration

This refers to how much of the folded tissue is engaged. Using less fold tissue creates a thinner, smaller sound. Engaging more tissue increases mass and thickness.

With practice, you can learn to consciously control fold mass by coordinating these elements.

While mass is a continuum from thick to thin, there is a distinct sensation when transitioning between the two modes. Maximizing this contrast helps develop awareness and control.


Exercises to Reduce Vocal Fold Mass

Here are some exercises to practice manipulating vocal fold mass:

  1. Pitch Slides

Start with a thick, low pitch and slide up in pitch. Let the folds naturally thin out as you ascend. Maintain the thinness as you slide back down in pitch. The higher you go, the more fold tension and thinning are needed.

  1. Thick to Thin Popping

Quickly flip between thick and thin modes to create an obvious "pop." The contrast helps you feel the different muscle activations. Use short bursts of air to facilitate the flip.

  1. Mimicry

Isolate thin voice in audio and try to mimic the exact onset and offset. Don't onset with breathiness. Instead, focus on clean entrances and exits.

  1. Physical Stretching

Tilt your neck forward and lift your head to gently stretch the folded tissue and induce temporary thinning. Compress the neck to engage thickness.

  1. Onset/Offset Training

Practice the delicate control required to cleanly start and end sounds when thin without adding breathiness.

  1. Behavioral Triggers

Make sounds that engage a thin voice like yawning, sobbing, or high-pitched baby talk. Be mindful of pitch and resonance changes.

  1. Semi-Occlusions

Lightly constrict the vocal tract with consonants like "m" to create back pressure that encourages fold thinning.

  1. Voiceless Exercises

Practice thin vs thick voiceless sounds like "h" to directly train mass control without the complication of pitch.


Putting It All Together

With regular practice using the above exercises or working with a speech therapist, you can gain awareness and control over vocal fold mass. As you're able to reliably produce a thinner vocal fold configuration on command, try integrating it into words, phrases, and everyday speech.

Reducing vocal fold mass produces a lighter, smaller, more feminine voice quality. But remember to also pay attention to your pitch and resonance for the best results. 

Achieving an integrated feminine voice takes time and consistency, but consciously thinning your vocal mass is the key to reducing the underlying buzz and heaviness associated with a masculine vocal quality. Just stay patient and keep practicing!



Altering vocal fold mass is crucial for developing a feminine voice. This guide provided an overview of vocal fold physiology, explanations of how mass impacts gendered voice qualities, and practical exercises to help reduce fold thickness. 

While it takes diligence and perseverance, consciously controlling your vocal fold mass is possible with practice. By thinning out your vocal folds, you can remove the excessive buzzing and density characteristic of masculine voices - leading you one step closer to finding your true female vocal identity!