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David Brancato
เข้าร่วมเมื่อ 18 ก.ค. 2013
My goal with this channel is to provide information based on my own research and experiences to fellow audio enthusiasts looking to improve the quality of their own speaker systems. I'll admit that there won't necessarily be a constant influx of new content, but as I learn new things and discover more ways of working I will update this channel. Hang in there! More is on the way.
How I use JRiver as a PC desktop host for my correction filters
In this short video I talk through the simple process of configuring JRiver on Windows for playback of system and application audio streams. JRiver is able to host VST3 plugins, which is extremely useful for implementing room correction filters. They can be loaded into JRiver itself, but using VST3 plugins can yield additional layers of control.
Additionally, you can load other plugins like IK Multimedia's ARC System 3 and Dirac Live Processor for room correction, or Steven Slate's VSX and Acustica's Sienna for headphone correction.
Links:
JRiver Media Center
jriver.com/index.html
MConvolutionEZ
www.meldaproduction.com/MConvolutionEZ
HLC
accuratesound.ca/
VSX
stevenslateaudio.com/vsx
Sienna
sienna.acustica-audio.com/
ARC3
www.ikmultimedia.com/products/arc3/
Additionally, you can load other plugins like IK Multimedia's ARC System 3 and Dirac Live Processor for room correction, or Steven Slate's VSX and Acustica's Sienna for headphone correction.
Links:
JRiver Media Center
jriver.com/index.html
MConvolutionEZ
www.meldaproduction.com/MConvolutionEZ
HLC
accuratesound.ca/
VSX
stevenslateaudio.com/vsx
Sienna
sienna.acustica-audio.com/
ARC3
www.ikmultimedia.com/products/arc3/
มุมมอง: 4 380
วีดีโอ
Frequency Response Correction in REW using Averages from Multiple-Point Measurement Array
มุมมอง 3.1K2 ปีที่แล้ว
This video directly follows the one I posted a day earlier, which goes through the same procedure using a pair of measurements taken from a single point at the listening position. This time I'm following the same process, but with a batch of measurements taken from a 9-point cube array similar to the one utilized by Dirac Live's studio configuration. The idea behind this approach is that by ave...
Generating Simple Frequency Response Correction Filters using Room EQ Wizard
มุมมอง 9K2 ปีที่แล้ว
I decided to start making some simpler videos, starting with this one. Here we cover the essential steps needed to create basic magnitude (frequency) response correction filters for convolution applications. Filters made using this method are compatible with just about any convolution reverb processor available that can load an impulse response in WAV format. I will cover implementation of the ...
Single-Point Digital Acoustic Correction for desktop & HiFi speaker systems Using REW and rePhase P5
มุมมอง 3K2 ปีที่แล้ว
Part 5 In this section, we use rePhase to compile the excess phase data and the magnitude filter banks into the left and right correction filters. These filters are then brought back into REW, where they are combined into a single stereo correction filter. Notes: Filter Taps: 65536 Windowing: Blackman-Harris Sample Rate: 96kHz Format: 64 bits IEEE mono (wav) All filter bands below 500Hz should ...
Single-Point Digital Acoustic Correction for desktop & HiFi speaker systems Using REW and rePhase P4
มุมมอง 3.1K2 ปีที่แล้ว
Part 4 This tutorial is similar to my first except that it generates a filter using only one measurement position. It also presents a different approach to creating corrective EQ banks. The filters created here will be slightly more accurate due to the fact that only a single measurement point is used. This accuracy is tailored specifically to the main listening position. Although multiple posi...
Single-Point Digital Acoustic Correction for desktop & HiFi speaker systems Using REW and rePhase P3
มุมมอง 2.3K2 ปีที่แล้ว
Part 3 This tutorial is similar to my first except that it generates a filter using only one measurement position. It also presents a different approach to creating corrective EQ banks. The filters created here will be slightly more accurate due to the fact that only a single measurement point is used. This accuracy is tailored specifically to the main listening position. Although multiple posi...
Single-Point Digital Acoustic Correction for desktop & HiFi speaker systems Using REW and rePhase P2
มุมมอง 3.5K2 ปีที่แล้ว
Part 2 This tutorial is similar to my first except that it generates a filter using only one measurement position. It also presents a different approach to creating corrective EQ banks. The filters created here will be slightly more accurate due to the fact that only a single measurement point is used. This accuracy is tailored specifically to the main listening position. Although multiple posi...
Single-Point Digital Acoustic Correction for desktop & HiFi speaker systems Using REW and rePhase P1
มุมมอง 3.6K2 ปีที่แล้ว
Part 1 This tutorial is similar to my first except that it generates a filter using only one measurement position. It also presents a different approach to creating corrective EQ banks. The filters created here will be slightly more accurate due to the fact that only a single measurement point is used. This accuracy is tailored specifically to the main listening position. Although multiple posi...
Digital Acoustic Correction for Desktop & HiFi speaker systems using Room EQ Wizard and rePhase - P4
มุมมอง 6K2 ปีที่แล้ว
Part 4 This tutorial will take you through the process of generating a stereo impulse response filter based on measurements taken in your listening space. It is broken down into four main parts, which I hope will help make the segments easier to follow. The entire program time of the tutorial is slightly under one hour. Your filter will be a 32-bit floating point WAV file, which can be loaded i...
Digital Acoustic Correction for Desktop & HiFi speaker systems using Room EQ Wizard and rePhase - P3
มุมมอง 3.1K2 ปีที่แล้ว
Part 3 This tutorial will take you through the process of generating a stereo impulse response filter based on measurements taken in your listening space. It is broken down into four main parts, which I hope will help make the segments easier to follow. The entire program time of the tutorial is slightly under one hour. Your filter will be a 32-bit floating point WAV file, which can be loaded i...
Digital Acoustic Correction for Desktop & HiFi speaker systems using Room EQ Wizard and rePhase - P2
มุมมอง 2.7K2 ปีที่แล้ว
Part 2 This tutorial will take you through the process of generating a stereo impulse response filter based on measurements taken in your listening space. It is broken down into four main parts, which I hope will help make the segments easier to follow. The entire program time of the tutorial is slightly under one hour. Your filter will be a 32-bit floating point WAV file, which can be loaded i...
Digital Acoustic Correction for Desktop & HiFi speaker systems using Room EQ Wizard and rePhase - P1
มุมมอง 4K2 ปีที่แล้ว
Part 1 This tutorial will take you through the process of generating a stereo impulse response filter based on measurements taken in your listening space. It is broken down into four main parts, which I hope will help make the segments easier to follow. The entire program time of the tutorial is slightly under one hour. Your filter will be a 32-bit floating point WAV file, which can be loaded i...
What if I don't have any filters left for the eq after matching to the target?
What should i do when i want to mix with Hardware gear do i have to turn off the Plugin?🤔
there are no EQ"S in the second "finer" eq match to download. ??. Strange because i can see them in the tab of the generated graph. But rew tells me there is nothing to export.
Are speaker distances accounted for in these filters, or would I need to add those in Roon speaker setup?
I just finished using this 4 part tutorial to tune my system. I've used some other REW methods (without RePhase) in the past, but these new filters are producing far-and-away the best sound my system has ever seen (or heard!). Thank you for taking the time to put this together.
How can I setup my own frequancies for equalizer corrections? For example 30hz, 50Hz, 80Hz, 125Hz...? Not automatic frequacnies generated by REW
Sei italiano?
Wow so helpful
Most of the major DAWs have an IR loader or you can load via a reverb fx plugin and add the results to the master output of the mixer etc. This is a very similar process to adding a cab ir in a modeler. Other eq correction software such as Sonaworks and others do essentially the same thing as REW but are paid options. REW is free. This tutorial does a really good job of covering the basics of getting eq correction for the home studio.
How is dirac versus Arc 3 versus the free version as far as I understand they are all just FIR filters. does one perform significantly better than the others? If I make files in room EQ wizard is it going to sound significantly worse than if I used Dirac?
Can you set the sample rate to a single setting? I’m using foobar2000 and audirvana but when I play different songs with different sample rates my interface keeps jumping from one clock rate to the other making my windows to crash. I’m using an Apollo twin thunderbolt with the asio setting . I haven’t tried jriver I’m wondering if I can do that on that one
For some reason, I can't have the target curve change slope on the graph even though I change the numerical amount in the Target Settings. I also don't have the PK settings appear under the thumbnail graph on the left hand side. It is blank.
David, I have a couple questions. Is there a way to connect outside this thread to discuss? My original measurement, the phase wasn't terrible. After going through all the steps, the phase has a ton of wraps. It went from 1-2 wraps to 90-100 wraps. Otherwise I think I followed all the steps. I watched all 4 videos and took notes to make sure I was catching all the steps.
Thank you!! With your assistance I've created my first FIR files for use with the convolution filter on Roon. Now I can just rest on my laurels or try and tackle phase correction. :D
Should I be getting about a 1.5 to 2 second delay from a 100% wet IR from REW? This is the case for me.
Great video. I exported the filter and now want to use it for my Mac OSX and Cubase. How do I do that? Thanks buddy
Come inserisco la correzione in Qrange? Si puo esportare il risultato come Txt? Per copiare i valori in un altro equalizzatore? Lo chiedo perché non ho convolver... Grazie
Thank you for these videos. Very helpful! I've been playing with REW and use a trick to correct phase without introducing echo noise or changing the frequency response. When comparing two different phases from measurements you can close the window down a lot, like 2 cycles when doing the A/B to get the phase difference. The phase remains largely intact even though the frequency response changes a lot. With that phase difference result, 1/A it to make a phase correction filter. Set the max allowed gain to zero, and then adjust the target level so that the frequency response of the 1/A result comes out flat. That will give you a phase correction filter that does not change the amplitude. Multiply that by your magnitude adjustment and it will adjust for phase and frequency response as expected. Helpful for me since I don't run Windows, and rePhase doesn't run on Mac.
You use no windowing? I took some windowed measurements to see try to get the quasi anechoic response at the listening position. Once done, measuring again without windowing reveals the natural slope of my room and speaker to be 0.3. So do we want the first arrival sound to be flat, or have a room curve embedded in it?
does the time alignment is in the same filteR ?
RME TotalMix user - I followed this and get a WAV file of my filter frequencies - I also limited it to 9 bands for TotalMix. But this outputs a WAV file - how can I get txt or just hand enter the correction settings into TotalMix? TIA!
Thanks for this! I'm running into an issue at export: I've followed your steps exactly, go to "Export Filters Impulse Response as WAV" and select the correct measurements (the original ones, where I ran the EQ)-then got "The selected filter set has no filters that have an effect, nothing to export." Any tips?
Hi David, can achieve acceptable results using your method and my DSP, which is the MiniDSP FLEX?
hello david your videos more informative..... thank uuu Different dsp use different filter formats .txt ,csv etc ....is it possible to export from rephase in csv format
Im very lucky found you chanel,you lesson so easy undestand,God bless you.keep it make lesson.
Hello, I would like to thank you for your excellent work.I mixed these filters you explained here, with the Phase Inversion Filter i found in another YT channel, (Mr Gùr , if I can tell), to extend phase correction to 1kHz and my spaker never sounded so good. Thank you so much.👍👍👍
Why Blackman-Harris windowing?
Your tutorial so clear and straight forward. Yes, alot of tedius back and forth implementing and saving but hey its free. One of the best guides I have seen. Thank You, David Brancato. I was all new to this when I decided to take an audio step beyond buying a DAC and Powered Bookshelfs for my desktop PC. I keep thinking it would be nice to just take a few Microphone measurements, input them into a software program and let it do all the steps you covered into this tutorial. I guess Dirac comes closest to this, but still alot of footwork involved. The person who can write this dreamware will sell millions of copies.
Thanks for this, slightly annoying that this software is $90 if I want to use ARC as standalone windows sound. Have you found any free alternatives that would work for this ?
Posso caricare il risultato in qualche eq free? Quale consigli?
Un Equalizzatore free che carica il risultato? Per poterlo usare il Cubase?
How did you hide the waterfall plot graph in the EQ section?
Loved all the parts and the idea. BUT READ CAREFULLY. You NEED a top end 2013 Haswell Laptop CPU or Top end Haswell Desktop CPU or ABOVE to complete all the steps. This piece of shit of software that i love so much called REW isn't Optimized to work with lower CPUs than the Top End Haswell. I did all the steps till REW crashed on my face. I obviously DID ALL AGAIN BECAUSE Im just a perfectionist like you that does not give up. returning to the first 14 measurements and again crashed in the lasts steps on my face this not greatly Optimized Software. SO. You Need at LEAST a Top end 4th Gen Intel or equivalent AMD cpu. You have been Warned.
great tutorial. Why do you work with the excess phase and why dont you just correct everything with linear phase fir filters? What is the point importing the excess phase to rePhase? Sorry that I have missed this point. Best regards
2 questions, are you doing the psychoacoustic filter instead of lets say 6 or 12 db smoothing for anything specific reason? like is it better to use psychoacoustic over the other choices? Also are you able to put this IR back into REW to then run it through the room sweep measurement to see IRL if the freq curve did infact work as predicted? side question do you, or does anyone else here, know if its possible to put this IR on your main computer outputs so its just on all the time? for example so you can listen to spotify through the IR aswell?
this method can use in professional audio installation?
Can Eclipse Audio Speaker Measure be used instead of REW?
Why did you specifically use psychoacoustic smoothing before creating your averages? Also, would that be different than averaging with no smoothing, then changing the averaged trace to psychoacoustic?
I don't think it would be different, no. I smoothed the response to better match the way we hear and also to make it easier for REW to match it to the target in the EQ section. But recently the updated versions of REW are able to handle matching better at higher resolutions. I can also use 1/6 or 1/12 smoothing now for the EQ filters. I still use psychoacoustic for optimizing group delay.
Hello, I love your videos! I'd like to know what are the settings in the preferences prior to taking measurements? I have been trying your approach and failing at some stages so I wonder if it's because of the premeasurement settings so would it be possible to make another video with premeasurement adjustments in REW or maybe you can write it here I don't know which will make more sense. I'm using Umik-1.
The settings are modified from the defaults, though recently I have been using Focus Fidelity's Impala to take measurements. I had one instance in which I was not able to get Impala to work, however, and in cases like that it does help to know how to configure REW for measuring. I'll take a few screenshots and put links to them in the description.
Thank you so much! i searched all over internet for a explaination of where was the button "Calculate" Or "Match Response to Target". The best video.
Cool I am glad this was helpful.
Hello again. What is the point of taking 3 measurements from exact same position that look the same and then creating averages (which also look exactly the same)? Am I missing something?
At the time I was using at multiple measurements from the same location to create vector averages. This was better in my mind than using a single L,R set because the averages reduced the possibility of variation in a single measurement that would otherwise go unnoticed. I basically just did it for peace of mind. Now, with the new way I do this, I only use one left and one right measurement.
Thanks for these 4 tutorials! I'm about to begin with this part but can you please tell me in what conditions you did the measurments? Did you use acoustic timing reference?
Yes I did use acoustic timing reference. When you measure the channels make sure the reference chirps come from either the left speaker or the right speaker each time. Doesn't matter which one, but keep it the same for both speakers. Also I aimed the mic straight up at the ceiling.
When checking the excess phase copies, the phase line is completely flat, phase is 0 for all frequencies, I don't think that is correct.
Whether it is mathematically correct or not, the filters generated from this data "sound" great. Granted, this is not the most optimized procedure I could have made, but still I am more interested in how the final filters sound than whether the graphs look "correct" or not.
@@davidbrancato but if the excess phase is 0 for all frequencies and you use the magnitude measurements for frequency gain filters, I fail to understand what it does add to the filter. Can you please explain?
@@l.s.1709 it’s not really zero though. When you pull the excess phase text files into rephase, there’s usually a slight rise in the top end so it’s not 100% zero. What this actually does technically is a little bit beyond my understanding but I do know what I hear when I listen to music through the filters and it is a vast improvement. Perhaps one day I will fully understand how it’s working, but for now, I just enjoy the fact that these filters are very close to the ones generated by other professional packages.
@@davidbrancato thanks, I've been using the minimum phase version of your filter for a week now and I like it. I also saw OCR's version who suggests a mixed power filter instead of the cutoff at 500 hz. Have you tried that already?
Another question: can you confirm the possibility to combine gain EQ based on measurements with moving mic method (MMM) and use vector averaged sweeps for phase correction?
I'm not sure about MMM. I measure everything with sine sweeps the same way the professional packages do: from either a stationary single-point main listening position or an array of stationary points around the main listening position.
@@davidbrancato update: I made new filters using your method, but with MMM measurements to create the EQ banks. I used vector average of sweep measurements for developing the excess phase version of the corrected vector avgs, but that was a lot of work just to end up with an excess phase measurement file that did not contain much (relevant) data at all, just a very gentle slope of a couple of degrees of phase at the upper end of the frequency spectrum. I don't fully understand what's going in that step. In the end I chose the minimum phase filter version that sounds very good!
How to prevent ringing and check for ringing?
This method is not quite that sophisticated. Remember, REW wasn't designed to compete necessarily with the state of the art software packages. If anyone knows of a way, I'd be interested to see it, though.
I've just used your method. Thank you very much for sharing your experience in the form of this tutorial! Highly appreciated. I still have a couple of questions: 1. Is there also a written version (for future reference)? 2. I have a 2.2 setup, how to incorporate them correctly in this method? What I did is I had my subs with front speakers time aligned, x-overed and pre-EQd up to 120 hz, based on Serkan's method and routed both subs with both right and left channel when doing measurements to start with your method. 3. I see significant differences in phase response between measured ir and minimum phase fitters between 300-3k and 10k-20k. I can hear the difference but it's hard for me to determine which is "correct", can you please elaborate a bit more? What should I listen for? 4. I applied the filter on EqualizerAPO, and it shows a very high latency of 670 ms which means video and audio are way out of sync, what's the reason and can it be improved? Is there any general way to apply video delay as correction? Unfortunately it's not in my TV settings
1. No, there is no written version. 2. I haven't been able to set up twin subs yet, unfortunately. I don't have the right hardware available yet. 3. Listen for tight controlled low end and clear open top end - wide 3D soundstage. 4. I don't use EQAPO but I do know you can change the settings in rephase to shorten the delay. Change the centering from "middle" to something like 20ms or 30ms.
thanks a lot!
You're welcome!
Thanks for this informative Tutorial. I'm just asking myself, how to correct for Phase shifts of the speakers that you can see in a windowed measurement with REW and how to maybe use the paragraphic Phase eq within rePhase. If I generate a filter for lets say the left channel based ob this tutorial I can also directly upload it to my miniDSP 2*4 (with the right No. of taps of course)... Right?
I'm not sure. I've never tried. I only use the filters within my operating system via convolver. Try it and see what happens!
Why exactly are you using the Minimum Phase and Excess-Phase Versions? Actually I'm Not sure which information these contain.... 🙄 Is it "just" for time correction in the bass area up to 500hz? Why can't I see any movement of the graph when uploading the EP-version to rePhase in the beginning of this video?
@@andreasheiden7122 For the pure and simple reason that I was very pleased with the way the final filters sounded. I generated many different versions of the filters using various methods and this was simply the best way to do it.
Hey, David! Awesome tutorial. But I've been reading your gearspace thread & someone had a bright idea (I'm sure u can bring that brightness back in line with your snazzy filters xD) to send you 3 measurements in exchange for some PayPal love. I'd like to jump on that action if possible please. Could I contact you over email to talk about this? Thanks, RH
Of course. Just send me an email.
All the Vector processing - does that ever get loaded into RePhase? Did I miss domething?
Never mind, I saw the answer below
Awesome