Benze Wrote:i do not know if it counts, i have a creative USB Headset
Which one? It most likely does not have an x-fi chipset in it.
@ExtemeDude2
You're not getting it. You need an audio chipset for your system to produce sound whether it's integrated or on a standalone expansion card (sound card). It does not matter what audio chipset your system has you can still get PLII working. Why? Because PLII on PCs is done entirely in software (which runs on the cpu). Dolby digital also works with any audio chipset for the same reason.
I think the confusion between you two is stemming for your definition of sound card. ExtremeDude2 is interpreting oliverfrancisco's post using a literal definition of a sound card (an expansion card). But what oliverfrancisco actually meant to say was audio chipset.
PLII is really just an advanced upmixer than can do matrix decoding. Game developers and film studios use a system called dolby surround (commonly mistakenly called PLII) to matrix encode a 5.1 audio track into a stereo audio track. PLII can reverse the process.
@skid
What changes did you make exactly? I might be able to dig up my old x-fi xtrememusic edition for this.
Ok, but does it work over USB?
Yes, dude. USB speakers use those ports to have energy instead of an A/C outlets, so that doesn´t matter as they´re always plugged into the sound card.
(I really know what are you trying to do. I have USB speakers too).
Mine isn't using power from the USB, it is getting the audio
(08-20-2013, 09:17 AM)ExtremeDude2 Wrote: [ -> ]Mine isn't using power from the USB, it is getting the audio
(Hmm, that sounds weird to me).
It receives both power and data through USB. The PC sends an LPCM audio stream (uncompressed audio) along with 5v DC for power. All usb headphones/headsets have to have their own audio chipset built in. You're not using your integrated audio chipset. You're using the headphones audio chipset. The headphones have a DAC and amplifier inside powered through USB that convert the LPCM data into an analog signal and amplifies it for playback.
It does not matter how you connect your equipment to your PC. The PLII decoding is done in software on the PC not on the equipment. Your equipment not only doesn't have to support it, it doesn't even know about it. The emulator will render a 5.1 LPCM signal and send that to your headphones through usb. The headphones don't know or care HOW it rendered it.
oliverfrancisco Wrote:(Hmm, that sounds weird to me).
That's how the vast majority of usb speakers and headphones/headsets work.
(08-20-2013, 09:34 AM)NaturalViolence Wrote: [ -> ]It receives both power and data through USB. The PC sends an LPCM audio stream (uncompressed audio) along with 5v DC for power. All usb headphones/headsets have to have their own audio chipset built in. You're not using your integrated audio chipset. You're using the headphones audio chipset. The headphones have a DAC and amplifier inside powered through USB that convert the LPCM data into an analog signal and amplifies it for playback.
It does not matter how you connect your equipment to your PC. The PLII decoding is done in software on the PC not on the equipment. Your equipment not only doesn't have to support it, it doesn't even know about it. The emulator will render a 5.1 LPCM signal and send that to your headphones through usb. The headphones don't know or care HOW it rendered it.
oliverfrancisco Wrote:(Hmm, that sounds weird to me).
That's how the vast majority of usb speakers and headphones/headsets work.
Then mine´s kind of old, since it has the USB jack for the power and one headphone-standard jack for the card´s audio output.
(08-20-2013, 08:56 AM)NaturalViolence Wrote: [ -> ]What changes did you make exactly? I might be able to dig up my old x-fi xtrememusic edition for this.
I replaced the ancient OpenAL 1.0 library with the newer soft OpenAL open source library. I want to make sure that doesn't break things using Creative drivers. Appreciate it if you could test the build(s) with the x-fi.
oliverfrancisco Wrote:Then mine´s kind of old, since it has the USB jack for the power and one headphone-standard jack for the card´s audio output.
Usually that's to allow the user to choose between using the speakers audio chipset or integrated audio/sound card (which could potentially be better). If you use 3.5mm TRS (headphone jack) it bypasses the audio chipset built into the speakers and provides analog audio (no need for power since it's already amplified). If you use USB it provides power and data to the built in audio chipset which then converts it to analog.
Are you sure the USB port is only for providing power? It makes no sense that they would do power only through usb since 3.5mm TRS can drive the transducers directly without the need for amplification.