Wednesday, November 27, 2013

how do I use surround sound hdmi in graphics cards?

best headphones 7.1 surround
 on headphones are designed specifically for the xbox 360 these headphones ...
best headphones 7.1 surround image






I'm thinking of buying the nvidia gtx 470, it apparently has hdmi that supports 7.1 surround sound, What I want to know is how am I supposed to get the sound from the hdmi port? How do I get the sound from the surround sound hdmi port over my headphones? If it has surround sound hdmi then how do I get it connected to my headphones?


Answer
Headphones? you don't. surround sound requires multiple speakers. 5.1 = 5 speakers and a sub, 7.1 = 7 speakers and a sub. Headphones consist of 2 speakers so you get stereo. "Surround Sound" has more to do with how the audio tracks have been mixed and recorded then separating the tracks and sending them to the individual speakers during playback. There is such a thing as "virtual surround sound" where multiple tracks are sent to the same speaker that does sound slightly better than just regular stereo, but it is still only 2 speakers and coming to you from only 2 directions so it is still stereo instead of "surrounding" you with sound from multiple speakers coming from multiple directions.

What is better for a gaming headset, dolby 5.1 surround or dolby pro logic 2?




Tony


I have a set of astro a50 wireless gaming headset that are both Dolby 7.1 surround and Dolby pro logic 2 surround. All the in game audio options have either Dolby 5.1 or Dolby pro logic 2 settings, which one has the better sound quality for my headset? Any information would be greatly appreciated, thank you


Answer
= Dolby Digital 5.1 = real discrete surround sound encoded audio > Dolby Pro Logic II or DTS:Neo 6 takes stereo encoded audio and matrix upmixes it into a fake 5.1 surround sound format for surround sound speakers.
= Any stereo/2.0 channels of audio speakers/headphones will work with a virtual effect such as DTS Surround Sensation/DTS Headphone:X or Dolby Virtual Speaker and Dolby Headphones. = Media players like k-lite codec pack for media player classic or vlc player or kmplayer have a audio setting called Headphone Virtual Spatialization which is the same thing, which takes any stereo speaker/headphones and creates a virtual/fake surround sound effect (special surround sound headphones may only have that virtual surround sound effect built into them, that's the only difference).

- DTS (.DTS or .DCA): Up to 5.1 surround sound, 24 bit depth, 48,000 hz sample rate, and constant bitrates of 1,536/1,509 kbps on Blu-ray discs or HD-DVD discs or DVD discs (some/few DVD discs might only be at 768/754 kbps or around 512 kbps). May come with extensions mentioned below. Automatic/preferred downmix to stereo systems.
- Dolby Digital (.AC-3): Up to 5.1 surround sound, 24 bit depth, 48,000 hz sample rate, and constant bit rates of 640 kbps on Blu-ray discs or 512/504 kbps on HD-DVD discs or 448/384 kbps on DVD discs. May come with extensions mentioned below. Automatic/preferred downmix to stereo systems.

- DTS-HD High Resolution Audio (.DTS-HD or .DTS-HD-HR): Up to 7.1 surround sound, 24 bit depth, 96,000 hz sample rate or 192,000 hz sample rate for 5.1 surround sound, and contant bitrates of 6.0 Mbps on Blu-ray discs or 3.0 Mbps on HD-DVD. Comes with a full quality DTS track for systems that only have DTS decoder. Automatic/preferred downmix to either 5.1 or stereo systems.
- Dolby Digital Plus (.E-AC-3): Up to 7.1 surround sound, 24 bit depth, 96,000 hz sample rate or 192,000 hz sample rate for 5.1 surround sound, and constant bitrates of 3.0 Mbps on HD-DVD discs or 1,024 kbps on Blu-ray discs (in future it says Blu-ray discs may support 4,096 kbps or 6,144 kbps). Comes with a full quality Dolby Digital track for systems that only have Dolby Digital decoder. Automatic/preferred downmix to either 5.1 or stereo systems.

- DTS-HD Master Audio (.DTS-HD or DTS-HD-MA): Up to 7.1 surround sound, 24 bit depth, 96,000 hz sample rate or 192,000 hz sample rate for 5.1 surround sound, and variable bitrates of 25.4 Mbps on Blu-ray discs or 18.0 Mbps on HD-DVD discs. Comes with a full quality DTS track for systems that only have DTS decoder. Automatic/preferred downmix to either 5.1 or stereo systems.
- Dolby TrueHD (upgraded version of .MLP is called .Dolby TrueHD or .TrueHD): Up to 7.1 surround sound, 24 bit depth, 96,000 hz sample rate or 192,000 hz sample rate for 5.1 surround sound, and varible bitrates of 18.0 Mbps kbps on Blu-ray discs and HD-DVD discs. Comes with a full quality Dolby Digital track for systems that only have Dolby Digital decoder. Automatic/preferred downmix to either 5.1 or stereo systems. 48,000 hz to 96,000 hz upsampling for Digital-to-Analog conversions (DAC).

- DTS Surround Sensation: Takes any stereo/2.0 speakers or stereo/2.0 headphones and creates a virtual 5.1 surround sound effect for speakers or 5.1 or 7.1 surround sound effect for headphones. DTS Headphone:X up to 11.1 surround sound effect.
- Dolby Virtual Speaker and Dolby Headphones: Takes any stereo/2.0 speakers or stereo/2.0 headphones and creates a virtual 5.1 surround sound effect for speakers or 5.1 or 7.1 surround sound effect for headphones.




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