Active Noise Control Headset
Muhammad Islam, an electrical engineering major from Bangladesh, recently spent the summer working in a UNH lab analyzing active noise control methods.
Numerous professions require the use of noise reduction headsets to protect those people who work in hazardous environments. Historically, passive noise control in the form of a foam earplug has been used to reduce sound pressure levels, but this method has proved inefficient at low frequencies. Active Noise Cancellation (ANC) functions much differently by creating anti-noise, which mixes with the disturbance noise to attenuate it.
For Muhammad's SURF project, he used feedforward and feedback methods for ANC headsets. "In feedforward, I picked up and measured the noise from outside the headset, whereas in feedback, the noise inside the headset was measured," he explains. "In both cases, the noises were used to generate anti-noise which was then fed back inside the headset."
Muhammad found that both the feedforward and feedback methods reduced noise at different frequency ranges. In his final report, Muhammad compares the advantages and drawbacks of each method, results which will help future researchers gain further insight into ANC headsets and determine what is most suitable for real life implementation.
- About Us
- The Programs
- Research Experience and Apprenticeship Program (REAP)
- INCO 590/790
- Undergraduate Research Awards (URA)
- Summer Undergraduate Research Fellowships (SURF)
- International Research Opportunities Program (IROP)
- Study Abroad Research Grants
- Honors Thesis Grants
- Research Presentation Grants
- For Researchers
- How to Begin
- Application Deadlines
- Proposal Writing Workshops
- Writing an Effective IROP Proposal
- Writing an Effective URA/SURF Proposal
- Criteria for Application Review
- Faculty Research Interests
- Present and Publish
- Responsible Conduct of Research
- Other Research Opportunities
- Related Interests
- For Faculty
- For Benefactors
- Recent Grant Recipients
- Inquiry journal