Noise Cancelling a Fan
2 days ago
- #indoor air quality
- #ventilation tips
- #DIY noise cancellation
- Indoor air quality enhances comfort and may improve cognition while reducing infection risks.
- Improving ventilation, such as using fans facing outward as recommended by the CDC, can increase air quality.
- Stronger fans are more effective but noisier, presenting a trade-off between performance and comfort.
- An experiment to cancel fan noise using principles from noise-cancelling headphones was attempted but faced challenges due to the irregular nature of fan sounds.
- Identifying a dominant tone (312Hz) in the fan's noise led to an unsuccessful attempt at cancellation using a Bluetooth speaker.
- Suggestions for improvement include using sound-absorbing materials around the fan or experimenting with multiple fans for destructive interference.
- Smaller fans (120mm) are suggested for experiments, balancing noise and efficiency at certain RPMs.