{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

ME 120 Experimental Methods Laboratory6

ME 120 Experimental Methods Laboratory6 - ME 120...

Info icon This preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
ME 120 Experimental Methods Laboratory Spring 2008 Ananda Mysore Ananda Mysore
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Sound Pressure Measurements square6 Objectives square6 Become familiar with hardware and techniques to measure sound pressure square6 Measure Sound level of various size fan modules square6 Calculate S/N of acoustic measurements Spring 2008 ME 120 Experimental Methods Laboratory Ananda Mysore square6 Fan Noise = f(size & operating speed)
Image of page 2
Basics square6 @ 20deg C Vel of sound = 344m/sec square6 Audible frequencies - 20 to 20000Hz square6 Bruel &Kjaer 2236 Precision Integrating sound level meter Spring 2008 ME 120 Experimental Methods Laboratory Ananda Mysore square6 Condenser Microphone square4 Thin metal foil stretched like drumhead over a frame. Pressure changes > diaphragm movement > changes in capacitance> milli-volt signal > pre amplifier > other amplifier stages > A/D converter boxshadowdwn Free-field response Microphone > one direction only boxshadowdwn Random-incidence Microphone > Equally from all directions
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Basics square6
Image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.
  • '10
  • Mysore,Ananda
  • Experimental Methods Laboratory Ananda Mysore, Experimental Methods Laboratory, Laboratory Ananda Mysore, Methods Laboratory Ananda

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern