×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Accoustic Ideas

Accoustic Ideas

Accoustic Ideas

(OP)
Hello,
  I am enetering my 4th year of electrical engineering this coming sept. At my university we must do a 4th year project that has some worth to it. I am extremely interested in accoustics and the associated electronics and would like to do a project in that area. My problem is I don't know too much about the scene right now. So I'm looking for ideas for a project, maybe something that is a hassle in the field that is too tedious for a working professional to tackle?? I'm open to ANY suggestions so please write any ideas you may have.

RE: Accoustic Ideas

There are a vast number of potential acoustic projects.  Here are two ideas:

1.  Take a long tube, which could represent an automotive exhaust pipe for example.  Apply a sinusoidal acoustic signal via a speaker at one end of the pipe.  Mount a microphone somewhere along the pipe.  Use the signal from the microphone to drive a speaker at the opposite end of the pipe.  Thus a feedback loop is formed.  The idea is to achieve "active noise cancellation."  The control speaker should produce a signal which is 180 degrees out-of-phase with the source signal.  This project has been done before, but it would be a good student project.

2.  Here is a project that is less exotic, but which is needed by the aerospace industry.  Obtain panels out of composite materials.  Expose the panels to a broadband random acoustic pressure field.  Measure the vibration response of the panels.  Develop a transfer function of the vibration response to the the acoustic pressure.  This has been done for aluminum panels, but the same research needs to be done for composite panels.  Seen me an Email.  I will send you a paper on this subject in reply.

A good, practical reference is:

Alton Everest, The Master Handbook of Acoustics

http://www.amazon.com/exec/obidos/ASIN/0071360972/vibrationdata-20/102-5831144-4950553

Sincerely, Tom Irvine
Email:  tomirvine@aol.com

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources

White Paper - Effects of AIA Quick Guide to UL 489 or UL 1077
The function of a circuit breaker is to provide overload (thermal) and short-circuit (magnetic) protection to a circuit and its downstream components. A circuit breaker functions like an airbag in a car, protecting circuit components and people by tripping the circuit to interrupt the current flow if it detects a fault condition in the control system. Download Now
White Paper - Guide to Integrate Large-Format Additive
As with any new technology, getting into large-format 3D printing begins with investigation. The first question may be a simple one: what does “large-format” mean? For 3D printers, “large” is a relative term. Many extrusion-based (FFF) 3D printers are referred to as desktop machines, because they fit on table space. Some of these have very respectable build volumes – but when it comes to “large-format,” the machines will need their own dedicated floor space. Large-format 3D printers have significant build volumes and are most often found in professional settings, like manufacturing facilities and R&D centers. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close