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Old 09-27-2008, 03:08 PM   #1 (permalink)
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Default Keeping system sound active while connected to a TV set

I'm trying to establish a permanent connection between my pc (Lenovo, M55e, running WinXP Pro (SP3)) and a TV. While I manage to get identical video on both units (TV and PC), I lose system sound when I get TV sound.
Is there a way to keep both outlets, system and tv audio, operative?
Can it be gained by BIOS change, software, or is there a hardware solution?

Ran
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Old 09-27-2008, 03:23 PM   #2 (permalink)
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Default Re: Keeping system sound active while connected to a TV set

If you are using the audio out jack then there's nothing you can do. The jack is the same as used on portable radios etc. The internal connection to the speakers will be disconnected as soon a plug is inserted into the jack. It's a mechanical function of the jack.
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Old 09-27-2008, 04:55 PM   #3 (permalink)
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Default Re: Keeping system sound active while connected to a TV set

Is there no way replacing the jack or changing its configuration?
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Old 09-27-2008, 05:49 PM   #4 (permalink)
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Default Re: Keeping system sound active while connected to a TV set

Quote:
Originally Posted by chermesh View Post
Is there no way replacing the jack or changing its configuration?
Yes, you can run a solder bridge on audio output jack. But you'd have to know what you are doing.
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Old 09-27-2008, 07:15 PM   #5 (permalink)
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Default Re: Keeping system sound active while connected to a TV set

Well, if this requires soldering, I'm in trouble. I'll most probably lose my Lenovo service insurance.
Is there any other option?
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Old 09-27-2008, 07:27 PM   #6 (permalink)
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Default Re: Keeping system sound active while connected to a TV set

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Originally Posted by chermesh View Post
Well, if this requires soldering, I'm in trouble. I'll most probably lose my Lenovo service insurance.
Is there any other option?

I misread your post. Forget what I said above. A second sound card or a USB sound adapter should work.
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Old 09-30-2008, 02:31 AM   #7 (permalink)
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Default Re: Keeping system sound active while connected to a TV set

I ran a search for usb sound adapters and found an item with the following specifications:

"USB 2.0 to Audio Adapter
1. Adopted Hua Xun CM108 chip which can simulate the effect as professional as 7.1-channel ;
2. With shortcuts buttons-- increase / decrease in volume, a microphone / headset mute
3. Digital playback circuit frequency response: 48 KS / SEC
4. DAC high-performance 16 headphones Output, 16 of the microphone input ADC;
5. Manufacturers committed to ensuringthe headphone and microphone quality

Will it fit my needs? Isn't its perdormance too weak for a TV set and a home cinema system?
Won't I be better of adding an external sound card?

Ran

"
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Old 09-30-2008, 03:28 AM   #8 (permalink)
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Default Re: Keeping system sound active while connected to a TV set

You might run into multitasking problems using a USB adapter. You might get an occasional interruption that you wouldn't want if you plan on doing any recording. I have a sound Blaster Audigy PCI card outputting audio to my DVR along with S video from my ATI All-in-Wonder card. This frees up the on board audio for system sounds etc. I haven't run into any problems having two different audio devices conflicting with each other.

I see your PC doesn't leave much room for internal expansion. A PCI or PCI express sound card would be better. If you like the present Lenovo sound quality going to the TV, the the USB adapter you are considering should do well for the system sounds.
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Old 09-30-2008, 03:55 PM   #9 (permalink)
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Default Re: Keeping system sound active while connected to a TV set

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Originally Posted by KurrentEweser View Post
If you like the present Lenovo sound quality going to the TV, the the USB adapter you are considering should do well for the system sounds.
Your suggestion to use the usb adapter for system sound and the original Lenovo card for tv sounds very interesting. How do I do it? How do I "free" the internal sound card for extra system use and "adopt" the usb one for system chores?

Ran
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Old 09-30-2008, 04:36 PM   #10 (permalink)
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Default Re: Keeping system sound active while connected to a TV set

The software you'll be using to send audio to the TV should have a mixer option to choose which sound device to use. As well as the Windows mixer control panel will allow you to choose which sound device to send system sounds.
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