Surround Receivers

12 Comments on Understanding DSP and Surround Sound Modes

  1. John

    What do you think of Yamaha Cinema DSP. ? Adventure sci-fi. Etc? Iv Been using not straight but surround standard on my Z9. Thank you

    • Jim

      I have a 7.2.4 Dolby atmos setup and my rear back surrounds will not play when I stream a Dolby atmos program or movie through vudu or Netflix. If I switch to neural X it will play the rear back surrounds. When I play the same movie through blu-Ray every thing is fine.

  2. Brian

    Agree with Mark’s comment. Now if we can just get a guide that would tell us how best to set our receivers to optimally experience these formats.

  3. craig

    i bought a yamaha tsr-700. claims to do dolby true hd and dts master audio but not sure. The display does not say so. When i play movie with dts master audio 7.1 the back surrounds do not produce sound. extremely irritating. i need to use dts-neo 6 which is not using pure 7.1 channels. seems yamaha jipped on processing or is using ‘straight’ or ‘pure direct’ the way to get the dts-master audio (back speakers work). if not im returning this piece of crap for onkyo….thanks

    • There is a lot of troubleshooting you can do but the receiver should have no problems decoding TrueHD and DTS MA. First things first – go into your receiver’s audio setting and run the test tones out of every speaker. Are the tones coming out of the surround backs? If not, you’ve got either a physical connection problem, or a setting problem. First, check that the speaker wire is connected to the correct outputs on the back of the receiver (surround back and not zone 2). If everything thing looks okay, there are a few things to check. 1) Make sure you are connected via HDMI. 2) Make sure you selected the right speaker configuration when you ran your setup. 3) Check your sources and make sure they are set to output bitstream and not PCM. Hope this helps!

  4. Les

    I run a Yamaha AVR that still provides Dolby Prologic II Music, DTS Neo 6 Music, THX Neural X Music modes among all the others.

    I after years of being a near audiophile luddite that only listened to stereo music in DIRECT MODE, one day woke up and tried out these above surround listening modes. NONE of the are fancy jazz club or rock arena DSP stuff. They are powerful but in only trying to extract the surround sound ques from stereo recordings. Applying appropriate time delays while they each in their own way extract the out of phase sound for the surround speakers and sum the sound for a center channel mix. Dolby Prologic II Music offers the listener most adjustability, DTS Neo 6 Music less so and THX Neural X Music the least (as in none). I find Dolby Prologic II Music to be the best for my listening tastes and room/speaker set up. But the other two are cool too.

    There is no fancy DSP manipulations with these to create some artificial Hall, Arena or such, but just simple “Hafler effect type” phase and delay. I have had the privilege of attending numerous live music events in my life, from clubs to arenas to stadiums to outdoor concert bowls. NO RECORDED MUSIC CAN TRULY REPLICATE A LIVE EVENT! But good hifi and good source recordings can help create an illusion of audio enjoyment. Finally after years of being a stick in the mud DIRECT ONLY stereo listening, setting up especially Dolby Prologic II Music for hi-fi listening has brought me closer to home audio beginning to sound more like live events than any specific gear, other tweaks, audiophile stuff.

    You get a good feeling of the sound of the recording studio, room, hall or if a live concert event recording the sound of the arena, concert hall or stadium used with especially IMO best with Dolby Prologic II Music.

    The newer UP MIXERS for music in Atmos or DTS X probably achieve similar or better results, but I don’t run Atmos or DTS -X in my A/V Room.

    • With most receivers, “auto” refers to matching the input. So, if your receiver sees a Dolby Digital input, it’ll use the Dolby Surround upmixer. If it sees a DTS signal, it’ll use the DTS upmixer. Either way, it will try to utilize as many speakers as possible. Usually. Check your receiver’s manual for verification (or just walk around your room and put your ear next to all your speakers). This is a long-winded way of saying, “Yes, the auto setting is just fine.”

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