In a nutshell
With a cold, the voice often sounds “stuffy” even though the vocal folds are not the main problem. The blocked nose removes certain resonance components, especially in sounds such as m and n.
Why does it happen?
The nose is part of the resonance space for nasal sounds. Swollen mucosa or mucus impedes the transmission of sound energy. Nasal sounds therefore sound less nasal; this differs from excessive nasality with incomplete palate closure.
Frequency
Altered nasal resonance is common with a blocked nose. Its population frequency therefore also depends on how often nasal breathing is obstructed.
Frequency is a qualitative description, not your individual probability.
Is it normal?
Improves as the infection resolves.
When to seek advice
If the change persists after the infection, or if persistent one-sided nasal blockage, swallowing problems, or breathing problems occur, seek medical assessment.
Does this happen to you?
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Sources (1)
- Resonanzstörungen – American Speech-Language-Hearing Association (opens a new tab)
ASHA describes hyponasality as reduced nasal resonance, often caused by a blockage.
Editorial update: . AI-assisted research and editing; not individually reviewed by a physician. How we research
