| ||||||||||||||||||||||
| ![]() | ![]() | |||||||
| REW Forum Thick person about to cryDiscuss Thick person about to cry in the Equalization | Calibration forum; Thick person about to cry I have been messing around for a while now trying to get the sound card and meter calibrated. However I ... |
|
|
Views: 1012 - Replies: 41
| Thread Tools |
| | #1 | ||||
| Thick person about to cry I have been messing around for a while now trying to get the sound card and meter calibrated. However I seem to be getting no where. First dumb question of probably many, How do I know if the computer is even seeing my meter? Im using a DFI lanparty board with the karajan module that came with it. I can get sound out to my amp, but plugging and unpluging the meter seems to have no effect. When i go to measure i dont get any trace either. Could it be that it doesnt support in and out at the same time? Any help on how to get going in the most basic of instructions would be greatly appreciated. | ||||
|
| | |
| | |
| | #2 | |||||
| Re: Thick person about to cry Quote:
Have you successfully calibrated the soundcard and then saved and stored that calibration file in REW and then taken a measurement of the looped back cable from line-out to line-in (that you used to accomplish the calibration) and gotten a flat result? brucek | |||||
|
| | #3 | |||||||
| Re: Thick person about to cry Quote:
I had similar questions. I can at least tell you how to check ifthe line out of the SPL meter is working. It's easy. Connect the SPL meter to an audio input on your receiver and talk. It should act like a mic, then you know it is working.Quote:
Quote:
![]() ASME AI Yamaha RX-V2500, Wharfedale Diamond 9.6 Fronts, Wharfedale Diamond CM Center, Diamond DFS Surround and rear, Behringer FBQ 2496, Dual RL-P18s 625L LLTs, Dual TA-2400 Pro (2 * 2000 W Amp), Samsung HD870 DVD player, Carada BW 16:9 106" screen, Epson TW-2000, 60 Gb PS3 Important HT proverbs: - "You can never have too much headroom" (talking about bass) - "you can never have too big a screen" (talking about still pictures) Projector selection basics Epson TW 2000 review | |||||||
|
| | #4 | ||||
| Re: Thick person about to cry Welcome to the Forum, blasted! Sorry, I don't know a thing about your soundcard, but you do need one that has line inputs as well as line outputs. Mic inputs won't work. Keep us posted! Regards, Wayne | ||||
|
| | #5 | ||||
| Re: Thick person about to cry Thanks chaps, so the first step is to forget the spl meter and calibrate the sound card. ![]() I tried pluggining into the aux input on the amp. it does indeed work like a mic, if i fail to get the sub set up at least i can do some singing along to the music, that way we will both be out of tune. | ||||
|
| | #6 | |||||
| Re: Thick person about to cry Quote:
I trust you've completely read the Cabling and Connection thread and also completely read the REW HELP FILES before you even considered doing anything else? brucek | |||||
|
| | #7 | ||||
| Re: Thick person about to cry I have been reading for a while, the more i read the more confused i get. In fact i am having trouble getting my head around connecting it all up. I have two cables each has a 3.5mm jack on one end and a pair of phono connectors on the other end (male, red and white) The sound card has line in and a line out I plug one of the cables into the line out using the 3.5mm jack. The other end of the cable, i plug the red bit into the red bit of the aux channel. I can now play a test tone from the computer through the amp and out of the speakers. I have a white plug spare. The second cable, the 3.5mm plug goes into the line in on the soundcard. At the other end of that cable the red and white ends, i plug the red bit into the spl meter. To create the loop that is required i took the white end of one cable and connected it to the white end of the other cable. This gives me horrendous feedback. so starting again, What i have done in REW so far, with a single cable running from the line out to the amp, red connector into aux, white connector not hanging free. No spl connected I open it up I select settings, i dont change anything I press check levels adjusting the volume on the amp does nothing, using the sweep i can up and down the reading on the screen, i set it to approx 75 on the screen spl meter. (sweep level 19) click finish at this point i go a bit pear shaped. Last edited by blasted; 05-16-08 at 08:21 PM.. | ||||
|
| | #8 | |||||
| Re: Thick person about to cry Quote:
So, disconnect all that and do the soundcard calibration first. This involves connecting the 3.5mm plugs to the line-in and line-out. Then you will have the red and white ends dangling there. Connect the red ends together, so that now you have a loop on the right channel from line-out to line-in. You will never use the white ends. Leave it dangle forever. Press the Measure button on the Settings page under the soundcard tab and follow the bouncing ball until that's done and save the file in REW with an appropriate name. Do not have the Use Left Channel calibrate as reference checked. Leave it unchecked forever. Do not have any meter calibration file loaded yet. You should get a graph that looks like this if it's a crummy card: The better the card, the better it will look.. ![]() Report back when you get that far. (I want to see your graph). There's a little floppy icon in the lower left corner of the graph for saving. brucek | |||||
|
| | #9 | ||||
| Re: Thick person about to cry Thanks for that, I have done what you said and managed to get a graph. I find a lot of the technical aspects a bit over my head and the help files are so detailed i can get a little lost. If i stick to, red plug to red socket we will get there. adjusting the volume, as i cant hear anything i adjusted the sweep level until the spl figure on the screen was 75, then i adjusted the input level until the bar was at 18, this brought the spl figure on the screen up to about 78, however the input lervel is very low, if i drop it any more it will be doing nothing. Thescreen shot shows what is there ![]() the graph i managed to make ![]() ![]() | ||||
|
| | #10 | |||||
| Re: Thick person about to cry Quote:
![]() It would be best to select your card type in the Settings Input and Output Device pull downs, and also select the line-out (speakers) and line-in pull downs. You'll see what I mean in the third picture below called (Windows Playback and Record Mixers interaction with REW). See where I have the RealTek Audio card selected? Try and select that instead of default. Your volume control Playback mixer is not correct. You want to Mute Line-in in Playback and enable it in Record. To select the Record mixer, pull down Options (on the Volume Playback Mixer you have shown in your pics) and select Properties and Recording Mixer. My pics show what should and should not be muted. Basically in playback you want Volume and Wave only, and in Record you want line-in enabled. If line-in is enabled in playback, you get feedback. I also show the interaction of the volume sliders and the controls in REW as a reference for you. OK, when performing the soundcard cal you don't use the REW SPL meter as you have indicated. You don't use it at all in the routine. How would REW have any idea of an SPL level. It can't until its calibrated to the real world (later). That's what the VU meters are for. Set a -12dB sweep level for the output with the Wave and Output about where I show them to be and then adjust the input level until the VU meter is around -12dB on the input. So, clear your file from the REW window and give it another try... Playback Mixer ![]() Record Mixer ![]() Windows Playback and Record Mixers interaction with REW ![]() REW controls interaction with VU meters ![]() Hopefully this makes sense............ brucek | |||||
|
| | #11 | ||||
| Re: Thick person about to cry sorry to hijack this thread. I have related question. On my volume controle window< I dont have an option for line in. Only volume, wave, sw synth, cd player and imput monitor. Should I just assume it is muted. Also on your recording options window you posted. You have the line in muted, but then you have an arrow pointing towards the input volume. Should line in on recording control be muted or not? Thanks | ||||
|
| | #12 | |||||||
| Re: Thick person about to cry Quote:
Quote:
Quote:
brucek | |||||||
|
| | #13 | ||||
| Re: Thick person about to cry Excellent pictures, thanks, I didnt even know about the recording parts. however i have found that i am unable to tick the box for line in on the recoding window and the advanced features seem locked. I have checked with the realtek site and it may be that i need a different driver. Im downloading it to see if it opens up the line in part. All other widnows will replicate the settings you have shown. I will update as i go on. Thanks Blasted | ||||
|
| | #14 | ||||
| Re: Thick person about to cry Hello again, I have just handed in the last of my course work and the exams are all done, so i have had chance to re vist where i left off. I did exactly as you said but I dont seem to be able to raise the input volume any where near your levels. I had reinstalled the driver and it allowed to select the line in channel on the recorder, which is a start. what shall i do? ![]() thanks. | ||||
|
| | #15 | |||||
| Re: Thick person about to cry Quote:
If still not enough, turn up the receiver SPL, so the listening level is at 80dB instead of 75dB. brucek | |||||
|
| | #17 | ||||
| Re: Thick person about to cry Yeah, you're not measuring anything. All the software looks setup correct. I can't imagine what you're doing wrong except that one of your 3.5mm splitter adapters or the cable looping back between them has some problem. I take it you're still attempting to get a soundcard cal file - correct? brucek | ||||
|
| | #18 | ||||
| Re: Thick person about to cry Im still stuck at stage one yes, I cant help but feel that the sound module that i am using on the board is not helping my cause. I used to have a sound card but not long back there was a thunder storm and i suspect lightening hit one of the phone lines which caused my pci modem to go bang, i actually saw it flash. From that point on i dont think any of the pci slots have worked, my grapics pci express do work though. Im tempted to get an external usb soundcard. EDIT just found that by wiggling the jack in the back of the computer i can affect one of the readings for the loop back, i shall have to check further. Last edited by blasted; 05-19-08 at 07:38 PM.. | ||||
|
| | #19 | ||||
| Re: Thick person about to cry Blasted, I don't know if this might help but I'll say again to make sure you're not using a mono jack into a stereo output... ASME AI Yamaha RX-V2500, Wharfedale Diamond 9.6 Fronts, Wharfedale Diamond CM Center, Diamond DFS Surround and rear, Behringer FBQ 2496, Dual RL-P18s 625L LLTs, Dual TA-2400 Pro (2 * 2000 W Amp), Samsung HD870 DVD player, Carada BW 16:9 106" screen, Epson TW-2000, 60 Gb PS3 Important HT proverbs: - "You can never have too much headroom" (talking about bass) - "you can never have too big a screen" (talking about still pictures) Projector selection basics Epson TW 2000 review | ||||
|
| | #20 | ||||
| Re: Thick person about to cry Im pretty sure they are both stereo, but I shall check none the less. Thanks people and please bear with me, i can be a home theatre shack sucess story ![]() Last edited by blasted; 05-20-08 at 05:04 AM.. | ||||
|
| | #21 | ||||
| Re: Thick person about to cry OK, the Stereo input to the soundcard should split into 2 RCA ends, only one of them will work when connected to the SPL meter. Be sure to switch between them and try. I am also sure you are already a Shack success story ![]() ASME AI Yamaha RX-V2500, Wharfedale Diamond 9.6 Fronts, Wharfedale Diamond CM Center, Diamond DFS Surround and rear, Behringer FBQ 2496, Dual RL-P18s 625L LLTs, Dual TA-2400 Pro (2 * 2000 W Amp), Samsung HD870 DVD player, Carada BW 16:9 106" screen, Epson TW-2000, 60 Gb PS3 Important HT proverbs: - "You can never have too much headroom" (talking about bass) - "you can never have too big a screen" (talking about still pictures) Projector selection basics Epson TW 2000 review | ||||
|
| | #22 | ||||
| Re: Thick person about to cry Right oh chaps, I bit the bullet and went and bought a soundblaster live 24, usb soundcard. I did what i did before and checked the settings against the soundblaster sticky at the top of the page and produced the following. I would appreciate it if someone gave me the nod before i proceed with getting the rest of it wrong. ![]() | ||||
|
| | #23 | ||||
| Re: Thick person about to cry Blasted, I think you really need to take the time to carefully read the help files again. This will save you a lot of time. After that you need to check the thread few posts above where Brucek made detailed explanation. Then if you have a problem, let us know. PS: The response of the soundcard looks good to me ![]() ASME AI Yamaha RX-V2500, Wharfedale Diamond 9.6 Fronts, Wharfedale Diamond CM Center, Diamond DFS Surround and rear, Behringer FBQ 2496, Dual RL-P18s 625L LLTs, Dual TA-2400 Pro (2 * 2000 W Amp), Samsung HD870 DVD player, Carada BW 16:9 106" screen, Epson TW-2000, 60 Gb PS3 Important HT proverbs: - "You can never have too much headroom" (talking about bass) - "you can never have too big a screen" (talking about still pictures) Projector selection basics Epson TW 2000 review | ||||
|
| | #25 | ||||
| Re: Thick person about to cry I think i am getting somwhere, slowely, but getting there none the less. I switched to the soundblaster live 24 external usb card, set it up as per what the on line notes say and followed through till i made a measurment. the first measurment was set to finish at 200 ![]() the second one i set the upper limit at 24,000, this did not finish as it said clipping was detected, and advised me to lower the volume on my amp, which i did. I got the following ![]() im not quite sure whats going off but it looks odd at the end. Am i on the right path or am I making a massive mistake? | ||||
|