Why Does My Voice Get Quieter with Parkinson’s?

This is one of the first things people notice.

Sometimes it is subtle.
You feel like you are speaking at a normal volume, but others ask you to repeat yourself.
Or conversations start to take more effort than they used to.

For partners, it often sounds like:
“I just can’t hear you anymore,” even when the person feels like they are speaking normally.

This happens because Parkinson’s affects how the brain sends signals to the muscles used for speech.

Over time, the voice can become:

• Softer

• Less clear

• More effortful

One of the tricky parts is that it does not always feel quiet to the person speaking.

Because of that, it can be hard to know how much effort or adjustment is needed in the moment.

In therapy, we focus on building more awareness and consistency in how the voice is used during everyday communication.

Programs like SPEAK OUT! use structured exercises to support this, with the goal of making speech feel clearer and more reliable in real conversations.

With practice, people often notice:

• Their voice carries more across a room

• They do not need to repeat themselves as often

• Conversations feel less effortful

This type of work can also support the same muscle systems used for swallowing, even when the focus is on communication.

These changes are not about sounding perfect.
They are about making communication feel easier again.