| ||||||||||||||||||||||||||
| ![]() | ![]() | |||||||
| REW Forum Using convolver universally in HTPCDiscuss Using convolver universally in HTPC in the Subwoofer Equalization | Calibration forum; Using convolver universally in HTPC In fact is the same, because the output level of all channels including sub is in any case levelled slightly ... |
|
| | Thread Tools |
| | #26 (Link) | |||
| Re: Using convolver universally in HTPC In fact is the same, because the output level of all channels including sub is in any case levelled slightly below the sound card clipping. In theory you might go both ways, but all the VST bass managers work with +10 Db, so there is no real option. | |||
|
| | |
| | |
| | #27 (Link) | ||||
| Re: Using convolver universally in HTPC Hi, Can you explain how I define in bass manager which channel is LFE? In your diagram I guess it is the channel 8. The bass manager user interface shows 8 channels (basic view) but it does not show any channel numbers next to the settings. Is the LFE fixed to rightmost (channel 8?) controls? BR, Ns Quote:
| ||||
|
| | #28 (Link) | |||
| Re: Using convolver universally in HTPC I'm using the Adobe Premiere version from Kelly Industries because I had problem with the standard one. In this version you can choose the sequence of the channels by clicking in the bottom left corner (L R Ls Rs C LFE or L R C LFE Ls Rs). .In my sound card LFE is channel 6, but with a 5.1 setup. In any case it should not be difficult to identify the LFE with some trials. | |||
|
| | #29 (Link) | |||
| Re: Using convolver universally in HTPC Thanks, Another question: As the bass manager is located AFTER the eq/room correction (pristine space) for me it looks like the room equalization can't be applied for the side channel's low frequencies routed to bass management sub channel. Or the correction is not correct if it is made based on side channel signal measurements. Can you explain how this is handled? Are you using bass management also for measurement signal when recording the impulse response for side channels (i.e. actually sub channel is recorded/corrected for low frequencies of side channels)? | |||
|
| | #31 (Link) | |||
| Re: Using convolver universally in HTPC Console is not officially supported with Vista. Seems to work in some level but when I create an ASIO project with Prodigy it freezes. Do you know any other alternative plugin host for this setup with Vista? UPDATE: Now I got it working - not sure what was the reason but when I created other parts first and added prodigy last then it didn't freeze anymore. Now I can get the sound through test config in attached picture. However if I turn dry adjustment to minimum I don't get almost any sound. if I understand correctly the convolved signal is adjusted via "wet" level adjustments and by pass signal via "dry". Therefore it looks to me that the convolved audio path is not working. Could you share screenshot from your prisitne space settings? Should the dry path be disabled fully? Thanks Last edited by nsiltala; 03-08-08 at 02:32 PM. | |||
|
| | #32 (Link) | |||
| Re: Using convolver universally in HTPC It should look similar to this: ![]() ![]() Each wav mono filter should have a slot, each channel should refer to a different slot. If you are using stereo wav filters you will use only 4 slots. Dry is not important, as you said is a bypass, and should be muted. You should only take care of the wet. Each channel's wet level should be adjusted manually. You might want to try A-gain. | |||
|
| | #33 (Link) | |||
| Re: Using convolver universally in HTPC Thanks a lot again. I forgot to say that I use audiolense for creating filters http://www.juicehifi.com/index.html. With Audiolense I can select the speaker config and it creates filter with needed amount of channels. So I assume that then I should use only one slot in Pristine Space for all channels. Anyway there is no sound even from channel one in wet mode, so there is some other problem. Need to study a bit more. | |||
|
| | #34 (Link) | |||
| Re: Using convolver universally in HTPC I noticed you created a 44.1 KHz filter. I suggest to use 48 KHz. DVD and most of Blu Ray audio tracks use 48 KHz. I'll take a closer look to Audiolense, it seems interesting. | |||
|
| | #35 (Link) | |||
| Re: Using convolver universally in HTPC Hi, I had problems with measurements with vista and now trying with XP. With XP I have problem that sound is full of pops and clicks. Did you have this kind of problems? | |||
|
| | #37 (Link) | |||
| Re: Using convolver universally in HTPC Thanks for advice, I already bought a new display adapter nvidia 9600GT. With that one it works now fine also for bluray. Not sure why but it fixed the audio issues as well. By the way, is there some way during windows start up to start up also the console so that it automatically opens the specific configuration file and starts processing? | |||
|
| | #40 (Link) | |||
| Re: Using convolver universally in HTPC Hi! Sorry for bumping this old thread... I had a few newbie questions regarding this scheme, since I would like to try room correction/eq in a similar manner. 1. For surround sound (5.1) room correction, for drc, do we generate the correction filters one channel after another (L, R, C, Ls, Rs) and include the sub in the measurement and correction process (a total of 5 room response correction filters)? 2. In the console snapshot, what is the purpose of the Equalizer after the correction filter convolution 3. If I need to convert two channel stereo to pro-logic II or dts neo:6, how do I add crossover filters into the chain if I want to completely bypass the a/v receiver and direct drive the amplifier from the soundcard? Also, is this advisable? 4. I would like to buy the audiotrak 7.1 prodidy card, but I have read that these have very low level (0.5-0.6volts) soundcard output signals on the analog outs. Will it be a problem if I need to drive the sound through 12feet of co-ax cables to the amplifier? Thanks for your help! | |||
|
| | #41 (Link) | ||||||
| Re: Using convolver universally in HTPC Quote:
Quote:
Quote:
Cannot tell, I am using short cables. Other options, of much higher quality and price, are RME sound cards. RME drivers allow loopback routing of audio streams. | ||||||
|
| | #42 (Link) | |||||
| Re: Using convolver universally in HTPC thanks for the superquick response! So, I am guessing that in the bass management, all the LFE frequencies are summed to the final LFE output. Also, how do i make sure the levels of the L,R,C,Ls and Rs for the room correction convolution with the sub included is the same? Is it done by calibrating each channel one by one during measurement with the sub connected for each channel? Quote:
I was seeing that in the cyberlink powerdvd, they have the option to do dolby/dts psuedo surround. I guess if it can software encode this, then with directwire, it should be possible to do the console based correction chain... Quote:
Appreciate your answers to all these questions and some more as I move along... ![]() | |||||
|
| | #43 (Link) | |||||
| Re: Using convolver universally in HTPC Quote:
Quote:
(distance of the farthest speaker - distance of each single speaker)/speed of sound If you use a sw player to apply pro-logic II or dts neo, then there is no problem. In theory you might apply the same effects with appropriate vst plug-ins, but I don't know if it's worthwhile. Last edited by antani; 08-01-08 at 07:35 AM. | |||||
|
| | #45 (Link) | |||
| Re: Using convolver universally in HTPC Thanks to this thread (and antani), I was able to get 5.1 channel audio working in this fashion using my onboard sound card. In case anybody else is trying to do this method of room correction without buying the prodigy/ESI sound card, here is what I did: 1. Install Virtual Audio Cable (VAC) which allows you to route from any software player (at least the ones I tried) to another device similar to the directwire driver in the ESI/Prodigy sound card lines 2. Install ASIO4ALL (Free) 3. Install Console 4. In console, choose ASIO4ALL as the audio device 5. In the ASIO4ALL configuration, choose appropriate sample rate, disable all inputs and outputs other than VAC as the input and RealTek HD audio output (in my case) 6. Set ASIO4ALL buffer size to max (2048 samples) and zero the input and output latency compensation. Also make the kernel buffer size to max (4) 8. Open VAC control panel and setup one VAC cable with 6 channels (for 5.1 setup) 9. On the motherboard soundcard driver, enable 5.1 playback 10. Using Media Player Classic or other players capable of doing DTS/Dolby decoding or virtual sorround decoding, play the media file and choose VAC cable 1 (setup above) as the output 11. In console route the 6 channel VAC input device to a bass manager as in antani's posts above and connect the output of the bass management VST (Kelly Industries) to the 5.1 output device 12. Enjoy (I also configured the receiver to 6 channel direct mode to pass the 6 channel audio through to the amplifier) I was able to make this work with any software player that can decode to 5.1 channels (Media Player Classic, VLC, TheaterTek DVD, etc). Latency is not too bad for audio playback. Next step is to get the room equalized in drc... | |||
|