Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[midrag]

Hi,

i am using JRiver with an 24 channel output interface (Motu 24ao). I am upgrading from stereo to 5.1 full-active speaker setup-up. I am also using JRiver WDM driver for gaming.

I read in the thread "JRSS for 5.1 with 24 Channel Output Possible?" https://yabb.jriver.com/interact/index.php?topic=96385.0 JRiver always uses 7.1 channel setup if i select my 24 channel output interface.

My feature request:

Please make the target speaker setup for JRSS configurable for output interface with more than 8 channels.

best regards,
midrag

[RD James]

If I recall correctly, one of the things that people have done is specify a 5.1 output via ASIO, but used the channel offset to route that to their desired output channels.
Whether that works for you may depend on how the device driver handles playback.

[midrag]

channel offset won't help. People use it to use channels 7 to 12 in another zone.

my problem is:
- if I select "5.1 Channels" under "output format" i can only work with 6 channels in the equalizer.
- if I select "24 Channels" under "output format" JRiver mixes everything to 7.1.

my feature request is that i can select the amount of channels i want to use in the zone (here: 24 channels) and the equalizer and to select the desired target output format (in my case: 5.1)

i have attached some screenshots. i know this is a special use case. I hope there are a lot more people out there wanting to use full active speakers in an 5.1 setup

[RD James]

Channel offset is in the device settings, not DSP Studio.
You would only have 6 channels to work with in DSP Studio, but the offset should push them to different channels on the device.
So instead of a 6-channel signal being sent to channels 0-5, it would be offset to 6-11, 12-17, 18-23.

[mattkhan]

Channel offset is in the device settings, not DSP Studio.
You would only have 6 channels to work with in DSP Studio, but the offset should push them to different channels on the device.
So instead of a 6-channel signal being sent to channels 0-5, it would be offset to 6-11, 12-17, 18-23.

how does that give 24 output channels in jriver without playing to 4 zones concurrently?

@midrag I think that, until mix target and output channels are decoupled, you'd probably have to manually mix back down to 5.1

[RD James]

how does that give 24 output channels in jriver without playing to 4 zones concurrently?

Perhaps I have misunderstood the request or made a bad assumption about what midrag is trying to do.
midrag: you asked for 5.1 mixing in a 24-channel output, but what is it that you are trying to achieve with that setup?

[midrag]

midrag: you asked for 5.1 mixing in a 24-channel output, but what is it that you are trying to achieve with that setup?

I am trying to use JRiver's equalizer as active crossover. My front speakers (except center) are 3-way speakers. Center and rear are two way speakers.
I need to work with 2 x 3 (front)+ 3 x 2 (center + rear) + 1 (subwoofer) = 13 channels in the equalizer.

As i build the speakers myself i am actually testing with 2.1 setup (because the center and rears are not build jet). As of now i can not use the 2.1 full-active setup with JRSS. The requested feature (access to all channels a interface has independent from the selected output format) would allow that (and many other variations).

[midrag]

@midrag I think that, until mix target and output channels are decoupled, you'd probably have to manually mix back down to 5.1

i'll try that. It would be great if the jriver team could keep the mentioned feature request in mind :-)

Short info for further readers:
I read about to methods down mixing 7.1 to 5.1.

Method 1:
Just use the 7.1 rear surrounds as the 5.1 surrounds:

L_s = L_rs
R_s = R_rs

Method 2:
Do some mixing as supposedly dolby suggests:

L_s = L_ss + L_rs(@-1.2dB) + R_sr(@-6.2dB)
R_s = R_ss+ L_rs(@-6.2dB) + R_sr(@-1.2dB)

L_s: Left surround in 5.1 setup
L_ss: Left side surround in 7.1 setup
L_rs: Left rear surround in 7.1 setup

R_s: Right surround in 5.1 setup
R_ss: Right side surround in 7.1 setup
R_rs: Right rear surround in 7.1 setup

[RD James]

I am trying to use JRiver's equalizer as active crossover.

OK, then I did misinterpret what you wrote. I thought you had upgraded to a new set of active speakers; i.e. they do all the management themselves.
For now, you will have to do the downmix via DSP Studio before setting up all your other DSP.

[mattkhan]

I read about to methods down mixing 7.1 to 5.1.

I suppose the preferred approach might vary with the source channel count, i.e. mixing down native 7.1 to 5.1 might be different to backing out a jrss 5.1->7.1 upmix. I don't recall ever seeing a specification of how jrss does that upmix though.