Search found 12 matches

by kaynemcgladrey
Fri Sep 11, 2009 5:14 pm
Forum: Mac OS X
Topic: Constant high-pitched humming, buzzing, whining
Replies: 32
Views: 10436

Re: Constant high-pitched humming, buzzing, whining

There are many samples linked throughout the prior forum posts on this subject. Just scroll up - maybe page 1 or page 2. The Apple Store claimed that the audio was of acceptable quality. I have a large number of customers (for online training) who have said the audio is of unacceptable quality. I'm ...
by kaynemcgladrey
Fri Sep 11, 2009 4:40 pm
Forum: Mac OS X
Topic: Constant high-pitched humming, buzzing, whining
Replies: 32
Views: 10436

Re: Constant high-pitched humming, buzzing, whining

I was in a conversation recently where I made the comment, "and I hate how when they've fixed it, they never post the solution". Realized that I'd done that. This post is an attempt to fix that. If your MacBook Pro seems to produce rubbish sound, you're in the right place. Tried recording on a 17" M...
by kaynemcgladrey
Sun Aug 16, 2009 9:12 pm
Forum: Mac OS X
Topic: Constant high-pitched humming, buzzing, whining
Replies: 32
Views: 10436

Re: Constant high-pitched humming, buzzing, whining

I'm not a genius but I can see there's sound recorded above 60Hz; heck, it's above 40Hz (your church organ example). My impression is that the Apple tech did NOT even reproduce my line-in test, and that the attached analysis of the 5 seconds of 'silence' via the USB mic shows the problem. Do you agr...
by kaynemcgladrey
Sun Aug 16, 2009 2:13 pm
Forum: Mac OS X
Topic: Constant high-pitched humming, buzzing, whining
Replies: 32
Views: 10436

Re: Constant high-pitched humming, buzzing, whining

I'm hoping you can run another one of those frequency spectrum analysis' or provide instructions on how to do that. There's 5 seconds of silence at the beginning of the recording, though the silence is quite relative. http://audacity-noise.s3.amazonaws.com/applestore.zip The technician agreed that t...
by kaynemcgladrey
Thu Aug 13, 2009 2:01 am
Forum: Mac OS X
Topic: Constant high-pitched humming, buzzing, whining
Replies: 32
Views: 10436

Re: Constant high-pitched humming, buzzing, whining

It's set to the default of 32 bit. So the net net is this: my MacBook Pro is different than yours. Vastly. And no amount of noise-canceling microphones nor noise reducing software features will fix that difference sufficiently. Off to the genius bar. I travel now and then. 26 different trips this ye...
by kaynemcgladrey
Thu Aug 13, 2009 12:52 am
Forum: Mac OS X
Topic: Constant high-pitched humming, buzzing, whining
Replies: 32
Views: 10436

Re: Constant high-pitched humming, buzzing, whining

Used cable; length is approx 6'. iPod Touch 2nd gen. No blue lines moving in Input. No red lines moving in Audacity. Made the meters full-screen. Nada. Pressed record in Audacity. Recorded what *SHOULD HAVE BEEN* absolute silence, if I understand it right. iPod Touch wasn't playing music and screen ...
by kaynemcgladrey
Wed Aug 12, 2009 11:47 pm
Forum: Mac OS X
Topic: Constant high-pitched humming, buzzing, whining
Replies: 32
Views: 10436

Re: Constant high-pitched humming, buzzing, whining

Don't take anything back or buy anything else for a while. The Plantronics went back. A colleague of mine listened to the sample and said it was awful. I am looking into an Apple Genius Bar appointment for tomorrow; the only thing consistent thus far has been the computer. And me. Happen to have a ...
by kaynemcgladrey
Wed Aug 12, 2009 10:10 pm
Forum: Mac OS X
Topic: Constant high-pitched humming, buzzing, whining
Replies: 32
Views: 10436

Re: Constant high-pitched humming, buzzing, whining

Spoke with one of my colleagues. He used a Plantronics 750 headset and his MacBook Pro and had no such difficulties with the high-pitched buzzing. As he is currently unable to send me his headset I returned the iMic and purchased a Plantronics 777 gaming headset. The high-pitched buzz is now a low-p...
by kaynemcgladrey
Wed Aug 12, 2009 8:04 pm
Forum: Mac OS X
Topic: Constant high-pitched humming, buzzing, whining
Replies: 32
Views: 10436

Re: Constant high-pitched humming, buzzing, whining

http://audacity-noise.s3.amazonaws.com/noise2.zip Moved the slider all the way to the right (Apple > System Preferences > Hardware > Sound > Input). Makes me louder, but also drastically increases the volume of the buzzing. I'd previously turned that down as it made the buzzing less prevalent. I'm r...
by kaynemcgladrey
Wed Aug 12, 2009 7:32 pm
Forum: Mac OS X
Topic: Constant high-pitched humming, buzzing, whining
Replies: 32
Views: 10436

Re: Constant high-pitched humming, buzzing, whining

Audacity preferences set to 48000 stereo. If I use the line-in with any microphone I own I get an endless stream of complaints from my colleagues. I have in fact tried yelling entire training sessions into a microphone attached to the line-in and heard, "yes, content's fine, but you're too quiet". T...