Audio Feedback Problem - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 6 Old 01-28-2013, 01:21 PM - Thread Starter
 
CyberKwyjibo's Avatar
 
Join Date: Jan 2013
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Equipment
Receiver: Yamaha Natural Sound AV Receiver RX-V567
Satellite Box: DirecTV HD-DVR
Computer: Dell Optiplex 790

Issue
I am experiencing audio feedback through my speakers when I am using my Dell Optiplex computer through my receiver. It is connected to the receiver via a RCA-to-3.5mm cable. Also connected to the receiver is my DirecTV HD-DVR satellite box. It is connected to the receiver via HDMI.

It is the connection between the DirecTV box and the receiver via HDM that is causing the feedback problem when I am using my computer. When the input is selected on the computer, the audio feedback is instantly heard. As soon as I unplug the HDMI cable from the receiver, the feedback goes away. As soon as the HDMI cable gets plugged back in, the feedback returns. I have tried other ports for the connections, but the feedback continues. I've also switched out the HDMI cable, and I still get the feedback.

Does anyone know why when the computer input is selected that it would get feedback because of the connection of another device? I don't get any feedback when the DirecTV is selected as the input, only when computer is selected.
CyberKwyjibo is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 01-28-2013, 01:27 PM
AVS Addicted Member
 
arnyk's Avatar
 
Join Date: Oct 2002
Location: Grosse Pointe Woods, MI
Posts: 14,387
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 763 Post(s)
Liked: 1178
Quote:
Originally Posted by CyberKwyjibo View Post

Equipment
Receiver: Yamaha Natural Sound AV Receiver RX-V567
Satellite Box: DirecTV HD-DVR
Computer: Dell Optiplex 790

Issue
I am experiencing audio feedback through my speakers when I am using my Dell Optiplex computer through my receiver. It is connected to the receiver via a RCA-to-3.5mm cable. Also connected to the receiver is my DirecTV HD-DVR satellite box. It is connected to the receiver via HDMI.

It is the connection between the DirecTV box and the receiver via HDM that is causing the feedback problem when I am using my computer. When the input is selected on the computer, the audio feedback is instantly heard. As soon as I unplug the HDMI cable from the receiver, the feedback goes away. As soon as the HDMI cable gets plugged back in, the feedback returns. I have tried other ports for the connections, but the feedback continues. I've also switched out the HDMI cable, and I still get the feedback.

Does anyone know why when the computer input is selected that it would get feedback because of the connection of another device? I don't get any feedback when the DirecTV is selected as the input, only when computer is selected.

Is there a microphone or webcam attached to the computer?
arnyk is offline  
post #3 of 6 Old 01-28-2013, 01:40 PM
 
SAM64's Avatar
 
Join Date: Apr 2011
Posts: 1,592
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Liked: 74
Probably a ground loop, and he's referring to hum as 'feedback'.
SAM64 is offline  
post #4 of 6 Old 01-28-2013, 02:18 PM - Thread Starter
 
CyberKwyjibo's Avatar
 
Join Date: Jan 2013
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by arnyk View Post

Is there a microphone or webcam attached to the computer?

There is no microphone. The computer is also connected to a Sony Bravia HDTV and a Creative webcam, which does have a built-in microphone.
CyberKwyjibo is offline  
post #5 of 6 Old 01-28-2013, 02:19 PM - Thread Starter
 
CyberKwyjibo's Avatar
 
Join Date: Jan 2013
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by SAM64 View Post

Probably a ground loop, and he's referring to hum as 'feedback'.

I'm not sure if it's feedback, that was just my best guess. There is a humming noise, but again, I don't know if that's classified as feedback.
CyberKwyjibo is offline  
post #6 of 6 Old 01-28-2013, 02:36 PM
AVS Addicted Member
 
arnyk's Avatar
 
Join Date: Oct 2002
Location: Grosse Pointe Woods, MI
Posts: 14,387
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 763 Post(s)
Liked: 1178
Quote:
Originally Posted by CyberKwyjibo View Post

Quote:
Originally Posted by SAM64 View Post

Probably a ground loop, and he's referring to hum as 'feedback'.

I'm not sure if it's feedback, that was just my best guess. There is a humming noise, but again, I don't know if that's classified as feedback.

Humming noises are called hum or humming noises.

Whoda thunk? ;-)

Definitely not feedback!

You no doubt have a ground loop. Easiest fix is a Ground Loop Isolator - less than $20 at Radio Shack or any number of places on the web.
arnyk is offline  
Reply Audio Theory, Setup, and Chat

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off