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Topic: Confused about sound card (Read 2138 times) previous topic - next topic
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Confused about sound card

Hello!

I have a Fujitsu-Siemens PC for about 6 months now and I am a bit confused about its sound device.
The DSP is integrated into the mainboard, but Everest detects it as PCI device (SiS 7012 Audio Device). The "Sound Effect Manager" also shows the audio controller as being from SiS, but the drivers I download have a RealTek ID.

Another thing is that I have 3 jacks on the back and 2 jacks on the front. The back side of the board has the text "Line Out", "Line In" and "Mic In" printed, so I connected my speakers to "Line Out" and my TV card to "Line In". So far so good, the sound is not bad. Every now and then, I would like to use my head-set for Internet conversations, but it would be pretty annoying to connect the microphone jack to the back of the PC and also replace the speakers with the headphone. That is why I thought that I could connect them to the front side, as it reads "Line Out" and "Mic In". Again, everything works pretty well (except for some wird noise when the CD-ROM, HDD or even the RAM is being accessed; I guess it has something to do with the analog connection acting as an antenna).

Recording from line in or microphone also functions flawlessly, but the problem is recording the sound which should go out. With my old Pentium II, I was able to record a mix of every enabled playback device - CD-A, Wave Out, Microphone, Line-In... Apparently, I can choose between Mono Mix and Stereo Mix when recording, but all I get is a totally clipped sound. No matter how low the volume is, the sound is always clipped and way too loud. When the sliders reach 0, the sound mutes. Any idea why that is so?

Also, the "Sound Effect Manager" which comes bundled with the drivers has a feature called "Connector Sensing". If I tell it to start sensing, it tells me that I have power speakers connected to "Line Out" and also reports that nothing is connected to "Line In" or "Mic In", although my TV card and microphone are connected. Ideas?

Anyways, if anyone knows this sound device, could he/she please tell me if...

- ...the DSP resamples to 48 KHz
- ...the DSP features bit-exact SPDIF (coaxial) output

Regards,
Sebastian

Confused about sound card

Reply #1 –
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The DSP is integrated into the mainboard, but Everest detects it as PCI device (SiS 7012 Audio Device). The "Sound Effect Manager" also shows the audio controller as being from SiS, but the drivers I download have a RealTek ID.
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It's not surprising that it's listed as a PCI device. Many onboard chips are usually connected over the PCI bus without being a PCI card, such as LAN, Sound, SATA...

The AC'97 codec is from Realtek indeed, that's why the default [a href="http://www.realtek.com.tw/downloads/dlac97-2.aspx?lineid=5&famid=12&series=8&Software=True]Realtek[/url] driver should work and should also enable more functions.

Quote
(except for some wird noise when the CD-ROM, HDD or even the RAM is being accessed; I guess it has something to do with the analog connection acting as an antenna).


That is a factor contributing to it, but really it's just about bad "shielding" on the motherboard and probably bad placement of the chip.

Quote
- ...the DSP resamples to 48 KHz


Yes.