Does humidity make the sound on a violin go higher or lower?

Humidity affects the sound of a violin by influencing the instrument's wood and strings. Higher humidity can cause the wood to absorb moisture, leading to a slight increase in mass and a damping effect, which may lower the pitch. Conversely, lower humidity can dry out the wood, potentially making the sound brighter and slightly higher in pitch. Overall, changes in humidity can alter the tonal quality, but the pitch shift is typically subtle.