Technology & Science

de/Humi is engineered for practical luthier conditions where dimensional stability and predictable acoustic response matter.

Why humidity matters

Wood is hygroscopic. As moisture changes, key physical and acoustic parameters also change:

• Mass changes with water uptake.
• Dynamic modulus and stiffness shift with moisture level.
• Internal damping often rises with higher moisture content.

These effects can influence attack clarity, transient response, sustain and projection.

Why controlled mid-range RH matters

Many workshops build and service instruments around mid-40s RH for dimensional neutrality. de/Humi is tuned for that practical working zone while operating in a safe range.

Operating target

• Functional band: 40-55% RH
• Practical target: 45% RH

Public references

• Bucur, V. Acoustics of Wood (Springer)
• Bremaud et al. (2011), Wood Science and Technology
• USDA Wood Handbook
• MDPI Materials review on moisture and wood behavior
• Effect of moisture content on the ultrasonic acoustic properties of wood (Springer, 2015)