Really liked this kind of video, it’s probably a little advanced for me at this stage as I’m still writing music on acoustic instruments but when I’m soon ready to start recording myself it will be good to have this video for reference. Thanks so much x
Yeah I still don't really get it either, why is sound you lose in the lower quality mp3 an unwanted error in the better quality one? Pass P.S I'm slow.
My name mp3 is a very convenient format because it compresses musical information into a smaller file size. However the loss in quality means increase in artifacts. The lower the mp3 quality, the smaller the file, but the worse the aritifacts. You save bandwidth but you lose quality. On this video you can hear the isolated artifacts, which are normally masked when reproducing the mp3 and therefore not clearly audible... to the untrained ear ;-)
+Doctor Mix Oh ok I didn't know that! I just assumed a small file has more removed and so would have less artifacts, less information, less of what we can't hear anyway (wasted space). I know what phase cancellation is, so the waveform has to be exactly the same just flipped to cancel the other out and increasing gain or altering the eq allows the difference through to be heard. Whats the difference between gain and volume? Is there one? And wheres my previous reply gone? 😛 I can't see it anymore!
Perhaps this was already commented.. If not, MP3 files seem to not start at exactly the same time as the original WAV files, so the difference is greater when you overlay them as I believe there is a tiny bit of delay before the MP3 actually starts..
Thanks for sharing the technique of null testing. I alsie use it to check if different masterings are used for WAVs of the same song on different CDs. If I hear nothing, then it's the same exact mastering/file on different discs.
Great technique. I saw it used in a demonstration about loudness and compression. And I learned something else. That song "the Groove" sounded to me as being from Shakatak, a band I always liked. So searching for it I didn't find it, but instead found the original from 1980 from Rodney Franklin. I found that Shakatak`s first album "driving hard" was released one year later, in 1981. I felt kinda dumb. But I also found the great version by Sunlightsquare. Did I understand correctly that you had a part in that? Cheers from the Netherlands!
I knew about this, but I like the way the basics are explained. Great video, because there is good theory and practice (including a trick with a mp3 file). I would be interested to see how correctly make a cappella from the track. Yeah, you have very cool skull heads on the turntables, that's awesome :)
This is a great channel. Have used Sonar Home Studio with a m-audio fasttrack ultra, no latency. I find all DAWS to be complicated, so I downloaded Bandlab (essentially its supposed to be the Platinum version of Sonar for free). Terrible latency. I can't find the driver settings that I used on Sonar. Bandlab has latency test (hold a mic to the speaker & the software determines & supposedly corrects the latency next time you record) but I'm playing a guitar & getting latency! Its a pain,
Fantastic video as always : Thanks a lot Doctor Mix :) Having a Prism Sound Orpheus, I don't have access to the verifile thing... I'm waiting for a next generation Prism Sound before changing my Orpheus, as the converters are the same between the Orpheus and the USB interfaces from prism Sound...
Very good video! I'm really looking forward for some more audiophile/audio freak videos! Maybe a video considering the sampling rates, Nyquist theorem and more applications :) Cheers from Greece!
I'm a beginner on music production and I become a fan of your channel in just a couple of minutes! I wonder how to do a null test to verify my inputs and outputs of my own interface?
Great informative video. Thanks. I am having glitching intermittently on a pioneer xdj-rx2. At first I suspected the cable but now I'm thinking it's the sample and latency rate set within the asio driver(windows 10). I've watched your audio interface video. Could the null test be an option to target the problem? Thanks I'm advance. Keep up the great videos.
Can you elaborate on what you define as an "error" near the end? Do you mean 'error' as in a quality loss or change from a reference source material? Is it finding an 'error' with a file, in isolation? Or is it finding an error with a file, as referenced to another file?
Hold up, are you trying to say those two pops that were not under-runs and actually embedded in the rendered audio were directly as a result of the Audio Interface???
Hi can u pls explain how to set all volume knob before song making or mix master ...... I really confused which knob i set first soundcard or pc or daw or master track .......and what gud master track requirement
your DAW should show you recording level. just keep it -15 or little lower to leave "headroom" for not visible peaks wich you will compress later for loudness.
Could the error just be a bit of clipping, which can be resolved by creating a larger ASIO buffer size, which doesn't really reflect having a poor audio card, just incorrect ASIO settings?
how or where can you get the input signal to compare to the output? is it your input a line signal compare now to output - an analog? you have shown a difference via null - so what will be the solution or objective of the null test?
Hello fellow members ive been facing a major problem that im unable to find the bass in my listening position. The moment i hit the back row the bass is 10x tighter the lower frequencies are audible aswell as felt but the moment i move in the front row, while standing the bass is audible and fine but the moment i sit in my perfect triangular position the bass is gone. I tried different speaker positions aswell as distances but the problem remains. If im facing bass nulling how to direct bass a bit forward? If i need bass traps how exactly will they help? Attaching a small video of my room if im doing anything wrong please guide me. Room dimensions are roughly 20ft hy 16ft Thanking in advance
Very good Mr Mix ! May I tell a problem with my digital piano amp : using a single amp I face phase cancelation with some notes in middle keyboard. I need do use 2 separate amps to avoid that. You how hard to take it to a gig. I have a very good Mackie SRM350, and I'd like some other possibilities, ex : If I invert (+/-) wires in one channel plug ?
imho inverting wires - is a good idea and the simpliest way to flip the phase. but nobody knows how you will check it, because your next device could make exact mistake flipped (due to same peaks combination in other side) and the cancelling check will say OK! actually I didn't get it ) but reversing wires seems to be the best move. the only way to avoid wave mistakes durnig flipping or AD conversion. I dont know for what)
I use this test sometimes to see if there is any latency in my daw. To do this in ableton, Open up a midi channel, Open operator or sylenth 1. Select a sine wave, Play 1 note over 1 bar. Resample it to audio. Now delete the instrument and have your audio. Duplicate the sine wave, Now add a utility plugin, On one of them, Now select the input buttons, Pure silence right? ;-) you have just performed the null test
After hearing the song (The Groove), I lost focus on the video. Please do tell when and where this song will be released? Also, what bass are you using on it? That bass hit me right in my feet and made them bounce. Great video! That Lyla interface looks very expensive!
Hello i got this souncard audio kontrol 6 mk2 i run high sierra osx on my imac from2010 i have korg karma and motif 7 as my keyboards and i run daw logic x 10.4.8 ok my issues is this when i hook up my soundcard with connect synth and midi and usb ,i see my soundcard blinking in the startup ook i go to logic make a track in audio nothing happends and i also wonder how i set up souces for sound to run with imac. i know i have to go to preferences in logic about setting audio but how is it in imac to set things also midi connections.... i struggle with a metal screaming sound came out in headphones or monitores. dont want that want smooth delicate sound in my recording works... ok look at it and came back thanks..
Huh... I've been playing around with phase inversion fir a while now for mid/side encode/decode and how it works with Dolby ProLogic Surround decoding... That method you use here made me think. If you render out that difference track in decent MP3 quality. You should be able to pair it up with the MP3 file you made it with. And basically reverse much of the damage of the original MP3 encode... Of course it would be best to render the difference track with a more lossless codec. But I wonder how much one could repair the MP3 using this method before the MP3 and the difference track together ends up taking up more space than the uncompressed file? Hmmm
In what form can this mistakes exist in your mp3 ?? Yes, mp3 is waaay different than original wav or smth. But this mistakes should be flipped with other data as well. What was it? One thing I did understand - dont work with mp3 and dont flip it)
I didn't realy get how signal can be damaged (except AD/DA) and how should I use it and what troubles could be found this way (except soo nasty clicks) and wtf is happening with mp3. Even if mp3 looses quality and make mistakes, why doesnt it fully kill itself. because ANY wave can be in your track and WTF can I make with the wave to be not equal phase-reversed. Isn't this error in flipping process ? because I can't imagine any other way to make track not be equal itself flipped. soooo 1. mistakes in AD/DA wich you only can catch, comparing recorded signal and not recorded. but recorded for comparasion. WTF 2. mistakes during flipping. don't flip ) .... what can you say, guys ?
4:31 - No seriously what is that? Is that the audio quality loss from the FLAC or the low mp3 quality audio artifacts added to the flac? 5:13 - You have to be more clear and explanatory what you're doing here, makes no sense...
u r creating drama when non is required .pultec works on this basis to create and introduce variable phase in the mix to sound good.i can tell u more ...............
Hey Doctor, sorry can't see the point really. If it sounds good it sounds good. Why keep going round in circles forever trying to find problems with your equipment or tracks. Interesting video though.
Yeah. That would be great if your speakers are moving in the directions that you say. But they're not. You won't, figure this out? No one knows what I'm talking about? But your speakers are in phase together. But they're out of polarity. Meaning that. They're not moving in the directions you think they are? They're going in the opposite way. Now this can only be remedied. By reversing the connections. Of your speakers. From the amplifier. Not before the amplifier as a phase inversion. But at the output of the power audio amplifier. Most, if not all, powered monitors. Also suffer from this, what I consider to be, the biggest audio screwup. In, Pro Audio, history. You have to believe me? But I do have one of the finest control roams in the USA. And 20 years spent, with the major Television & Radio, network for, 20 years. And I've fixed a lot of studios in my time. Like, the owner of, API Audio Inc.'s, own, studio. And other hit, studios, through the years. I mean this is goofy. If you knew why this was going on? There is a legitimate technical reason for it being wrong. But in my book? It has to sound right! And that's what I specialize in doing. No one knows what I know LOL. They're all a bunch of, academic idiots. I don't have a, dumb ass, college degree. I don't need one. As, I teach the college professors. You don't have to believe me? But I was, a technical manager. For one of the most legendary analog tape recorder companies, ever. And turned down a job offer from another well known, firm. As they did not offer me a management position. Because, yes. I'm that good. And you need to learn a thing or two yet. You young'ins. Are all, so terribly, misinformed. Yeah. I'm 63. And I've been in that Pro Audio, business for over 50 years now. So I know a thing or two you don't. And have as yet, to learn. The speaker polarity thing. Is a game changer. If you want to know more? You can probably find me on the Internet? Or through this posting? I am not as much an Internet dweeb, as most others. But you're getting this information here from a most reliable source. Just so ya know. It's OK if you think you know what you know. Even if you don't. That means less competition for me. But I know what hit engineers want to hear. Do you? If ya believe what you want to believe. But you would be wrong. I'm sorry to say. But I have to say it. I'm just that way. You know I am? And that's probably for the better? But if ya read these? Ya might learn something? Though, I doubt it?
Really liked this kind of video, it’s probably a little advanced for me at this stage as I’m still writing music on acoustic instruments but when I’m soon ready to start recording myself it will be good to have this video for reference. Thanks so much x
Yeah I still don't really get it either, why is sound you lose in the lower quality mp3 an unwanted error in the better quality one? Pass
P.S I'm slow.
My name mp3 is a very convenient format because it compresses musical information into a smaller file size. However the loss in quality means increase in artifacts. The lower the mp3 quality, the smaller the file, but the worse the aritifacts. You save bandwidth but you lose quality. On this video you can hear the isolated artifacts, which are normally masked when reproducing the mp3 and therefore not clearly audible... to the untrained ear ;-)
+Doctor Mix Oh ok I didn't know that! I just assumed a small file has more removed and so would have less artifacts, less information, less of what we can't hear anyway (wasted space). I know what phase cancellation is, so the waveform has to be exactly the same just flipped to cancel the other out and increasing gain or altering the eq allows the difference through to be heard.
Whats the difference between gain and volume? Is there one? And wheres my previous reply gone? 😛 I can't see it anymore!
Wow.. I would never have thought of this technique! Great work Dr. Mix!
thanx for showing me other usages of noise canceling techniques,didnt knew that
Awesome work dr MIX....love from INDIA
You just blew my mind Doctor Mix, thank you for taking the time to make this video. I will be using the null test from here on out.
Perhaps this was already commented.. If not, MP3 files seem to not start at exactly the same time as the original WAV files, so the difference is greater when you overlay them as I believe there is a tiny bit of delay before the MP3 actually starts..
Hey Doc, thanks for all the great videos -- it has been inspiring to watch your channel!
Dude this is gonna save me so much time checking all of my old tracks thanks a lot
Thanks for sharing the technique of null testing.
I alsie use it to check if different masterings are used for WAVs of the same song on different CDs. If I hear nothing, then it's the same exact mastering/file on different discs.
Right on Doc Mix!!
Your channel is simply awesome, well presented, keep it up.
Great tip! Love the way you make it simple 👍
Using Null testing for the purpose of equalizing? WHAT 🤯
I never thought of doing this. That's a life changer! D:
Amazing video! Very useful! Gonna be playing with the null test for a while :)
Very cool and totally useful video. Hope more of these are coming up! Good job
My mind is still blown. I'm going to need a while to process the last part. Great info, though!
You just solved some issues I've been having. Thanks!
Very interesting and educational. Thank you very much.
¡ wath is the ! Muchas gracias por tan estupenda enseñanza, MASTER DOCTOR MIX.
I learned something new Today! Thank you.
Tnx Doctor Mix! This'll help me save time as what I usually do is playback the tracks one by one and check for dropouts.
Mark Eurenz Cabusas exactly! Right?
Great technique. I saw it used in a demonstration about loudness and compression. And I learned something else. That song "the Groove" sounded to me as being from Shakatak, a band I always liked. So searching for it I didn't find it, but instead found the original from 1980 from Rodney Franklin. I found that Shakatak`s first album "driving hard" was released one year later, in 1981. I felt kinda dumb. But I also found the great version by Sunlightsquare. Did I understand correctly that you had a part in that? Cheers from the Netherlands!
Yeah man great video!
cool video.. what i use to get rid of bad stuff in a song
Very useful and instructive!
BANG !!!
Really usefull video, thank you !!!
I like it. Its new to me on confirmation.
Thanks for the info!! Now I can test what parts of my songs are lost in compression!!
I knew about this, but I like the way the basics are explained. Great video, because there is good theory and practice (including a trick with a mp3 file). I would be interested to see how correctly make a cappella from the track. Yeah, you have very cool skull heads on the turntables, that's awesome :)
This is a great channel. Have used Sonar Home Studio with a m-audio fasttrack ultra, no latency. I find all DAWS to be complicated, so I downloaded Bandlab (essentially its supposed to be the Platinum version of Sonar for free). Terrible latency. I can't find the driver settings that I used on Sonar. Bandlab has latency test (hold a mic to the speaker & the software determines & supposedly corrects the latency next time you record) but I'm playing a guitar & getting latency! Its a pain,
Very interesting and nicely explained Doc! Thank you! :)
Great video doc.!!!
Fantastic video as always : Thanks a lot Doctor Mix :) Having a Prism Sound Orpheus, I don't have access to the verifile thing... I'm waiting for a next generation Prism Sound before changing my Orpheus, as the converters are the same between the Orpheus and the USB interfaces from prism Sound...
super usefull thanks for the tip!
Very good video! I'm really looking forward for some more audiophile/audio freak videos! Maybe a video considering the sampling rates, Nyquist theorem and more applications :) Cheers from Greece!
Great! Didn't know that!
I'm a beginner on music production and I become a fan of your channel in just a couple of minutes!
I wonder how to do a null test to verify my inputs and outputs of my own interface?
that trick comes in super useful for figuring out guitar parts in rock and metal music! have you done stuff like that too?
and this is how we get acapella from tracks =)
Great informative video. Thanks. I am having glitching intermittently on a pioneer xdj-rx2. At first I suspected the cable but now I'm thinking it's the sample and latency rate set within the asio driver(windows 10). I've watched your audio interface video. Could the null test be an option to target the problem? Thanks I'm advance. Keep up the great videos.
thank you, you deserve more subs! :)
Very cool
Can you elaborate on what you define as an "error" near the end? Do you mean 'error' as in a quality loss or change from a reference source material?
Is it finding an 'error' with a file, in isolation? Or is it finding an error with a file, as referenced to another file?
Pl
Great video! Really interesting ;-)
Once you have discovered the errors, is there a technique to fix them without the Prism? Thanks.
Great explanation! Do you know if/where the phase can be flipped iln Logoc Pro ?
jai pas tout capté mais c est fort :) genial ta chaine.
👍👍👍👍👍👍👍👍👍thankss
thanks bro, that was awesome. :D
Hold up, are you trying to say those two pops that were not under-runs and actually embedded in the rendered audio were directly as a result of the Audio Interface???
name of the song at 4:17 ?
Hi can u pls explain how to set all volume knob before song making or mix master ...... I really confused which knob i set first soundcard or pc or daw or master track .......and what gud master track requirement
your DAW should show you recording level.
just keep it -15 or little lower
to leave "headroom" for not visible peaks
wich you will compress later for loudness.
Great new song!! 😉
Could the error just be a bit of clipping, which can be resolved by creating a larger ASIO buffer size, which doesn't really reflect having a poor audio card, just incorrect ASIO settings?
how or where can you get the input signal to compare to the output? is it your input a line signal compare now to output - an analog? you have shown a difference via null - so what will be the solution or objective of the null test?
Doctor Mix, I would like to register a song before send a sample to you to mix and production. How do I do that?
Hello fellow members ive been facing a major problem that im unable to find the bass in my listening position. The moment i hit the back row the bass is 10x tighter the lower frequencies are audible aswell as felt but the moment i move in the front row, while standing the bass is audible and fine but the moment i sit in my perfect triangular position the bass is gone. I tried different speaker positions aswell as distances but the problem remains. If im facing bass nulling how to direct bass a bit forward? If i need bass traps how exactly will they help?
Attaching a small video of my room if im doing anything wrong please guide me.
Room dimensions are roughly 20ft hy 16ft
Thanking in advance
Very good Mr Mix ! May I tell a problem with my digital piano amp : using a single amp I face phase cancelation with some notes in middle keyboard. I need do use 2 separate amps to avoid that. You how hard to take it to a gig. I have a very good Mackie SRM350, and I'd like some other possibilities, ex : If I invert (+/-) wires in one channel plug ?
imho
inverting wires - is a good idea and the simpliest way to flip the phase.
but
nobody knows how you will check it, because your next device could make exact mistake flipped (due to same peaks combination in other side) and the cancelling check will say OK!
actually I didn't get it )
but reversing wires seems to be the best move.
the only way to avoid wave mistakes durnig flipping or AD conversion.
I dont know for what)
I use this test sometimes to see if there is any latency in my daw. To do this in ableton, Open up a midi channel, Open operator or sylenth 1. Select a sine wave, Play 1 note over 1 bar. Resample it to audio. Now delete the instrument and have your audio.
Duplicate the sine wave, Now add a utility plugin, On one of them, Now select the input buttons, Pure silence right? ;-) you have just performed the null test
After hearing the song (The Groove), I lost focus on the video. Please do tell when and where this song will be released? Also, what bass are you using on it? That bass hit me right in my feet and made them bounce.
Great video! That Lyla interface looks very expensive!
Hey Tony! Glad you like the song :) It will be out around November on BBE records. The bass is the Minimoog :)
Thank you so much! Please link whatever it will be (album, EP, etc) so that we can jump on it as soon as it comes out! 😇
Paul Weller's The Style Council's first LP release piano sound clip of "My Ever Changing Mood" for WIN!
Could a Null test prove that fancy and expensive cables have little or no effect?
Have you seen the new RD-808 ?
heard of it
Hello i got this souncard audio kontrol 6 mk2 i run high sierra osx on my imac from2010 i have korg karma and motif 7 as my keyboards and i run daw logic x 10.4.8 ok my issues is this when i hook up my soundcard with connect synth and midi and usb ,i see my soundcard blinking in the startup ook i go to logic make a track in audio nothing happends and i also wonder how i set up souces for sound to run with imac. i know i have to go to preferences in logic about setting audio but how is it in imac to set things also midi connections.... i struggle with a metal screaming sound came out in headphones or monitores. dont want that want smooth delicate sound in my recording works... ok look at it and came back thanks..
Huh... I've been playing around with phase inversion fir a while now for mid/side encode/decode and how it works with Dolby ProLogic Surround decoding...
That method you use here made me think. If you render out that difference track in decent MP3 quality. You should be able to pair it up with the MP3 file you made it with. And basically reverse much of the damage of the original MP3 encode...
Of course it would be best to render the difference track with a more lossless codec. But I wonder how much one could repair the MP3 using this method before the MP3 and the difference track together ends up taking up more space than the uncompressed file?
Hmmm
But mp3 is sending precisely that area to trash and will do it again.... depending on the sample, frequency, etc
In what form can this mistakes exist in your mp3 ??
Yes, mp3 is waaay different than original wav or smth.
But this mistakes should be flipped with other data as well.
What was it? One thing I did understand - dont work with mp3 and dont flip it)
What was the errors?
Fucking magic to me! Thanks so much!
Are u Sunlightsquare ?????
I'm all about that UAD life
Dithering?
OMG
Peaks are positive, troughs are negative. You can't have a negative peak. Great demo though.
I didn't realy get
how signal can be damaged (except AD/DA)
and how should I use it
and what troubles could be found this way (except soo nasty clicks)
and
wtf is happening with mp3.
Even if mp3 looses quality and make mistakes,
why doesnt it fully kill itself.
because
ANY wave can be in your track
and WTF can I make with the wave
to be not equal phase-reversed.
Isn't this error in flipping process ?
because I can't imagine any other way
to make track not be equal itself flipped.
soooo
1. mistakes in AD/DA
wich you only can catch, comparing recorded signal
and not recorded.
but recorded for comparasion.
WTF
2. mistakes during flipping.
don't flip )
....
what can you say, guys ?
If not your two rotating skulls, then I would thumb up too...
Why? You noticed them and you’re talking about them, so... mission accomplished ;-)
@@Doctormix, you just exposed yourself for being an opposite from good...
The best use for null testing is showing snobby audiophiles who spend ten thousand dollars on a cable that they got ripped off.
It warms my heart.
Very informative, but not all of us can afford £1000 on a soundcard lol
4:31 - No seriously what is that? Is that the audio quality loss from the FLAC or the low mp3 quality audio artifacts added to the flac? 5:13 - You have to be more clear and explanatory what you're doing here, makes no sense...
u r creating drama when non is required .pultec works on this basis to create and introduce variable phase in the mix to sound good.i can tell u more ...............
Hey Doctor, sorry can't see the point really. If it sounds good it sounds good. Why keep going round in circles forever trying to find problems with your equipment or tracks. Interesting video though.
Sound excellence requires science :-)
Thought I was going to learn something new...dude thats called phase cancellation.....
Yeah. That would be great if your speakers are moving in the directions that you say. But they're not. You won't, figure this out? No one knows what I'm talking about? But your speakers are in phase together. But they're out of polarity. Meaning that. They're not moving in the directions you think they are? They're going in the opposite way.
Now this can only be remedied. By reversing the connections. Of your speakers. From the amplifier. Not before the amplifier as a phase inversion. But at the output of the power audio amplifier. Most, if not all, powered monitors. Also suffer from this, what I consider to be, the biggest audio screwup. In, Pro Audio, history. You have to believe me? But I do have one of the finest control roams in the USA. And 20 years spent, with the major Television & Radio, network for, 20 years. And I've fixed a lot of studios in my time. Like, the owner of, API Audio Inc.'s, own, studio. And other hit, studios, through the years.
I mean this is goofy. If you knew why this was going on? There is a legitimate technical reason for it being wrong. But in my book? It has to sound right! And that's what I specialize in doing. No one knows what I know LOL. They're all a bunch of, academic idiots. I don't have a, dumb ass, college degree. I don't need one. As, I teach the college professors. You don't have to believe me? But I was, a technical manager. For one of the most legendary analog tape recorder companies, ever. And turned down a job offer from another well known, firm. As they did not offer me a management position. Because, yes. I'm that good. And you need to learn a thing or two yet. You young'ins. Are all, so terribly, misinformed. Yeah. I'm 63. And I've been in that Pro Audio, business for over 50 years now. So I know a thing or two you don't. And have as yet, to learn.
The speaker polarity thing. Is a game changer. If you want to know more? You can probably find me on the Internet? Or through this posting? I am not as much an Internet dweeb, as most others. But you're getting this information here from a most reliable source. Just so ya know. It's OK if you think you know what you know. Even if you don't. That means less competition for me. But I know what hit engineers want to hear. Do you? If ya believe what you want to believe. But you would be wrong. I'm sorry to say. But I have to say it. I'm just that way. You know I am? And that's probably for the better? But if ya read these? Ya might learn something? Though, I doubt it?