Pink noise and mixing

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Len911
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Re: Pink noise and mixing

Post by Len911 » Thu Jul 27, 2017 7:49 pm

What seems to be happening after watching the video, is mixing by the Fletcher-Munson curve, or loudness perception.
The range of human hearing is generally considered to be 20 Hz to 20 kHz, but it is far more sensitive to sounds between 1 kHz and 4 kHz. For example, listeners can detect sounds as low as 0 dB SPL at 3 kHz, but require 40 dB SPL at 100 hertz (an amplitude increase of 100).
So with that in mind, if you have normal hearing, you are likely to compensate by increasing amplitude to the bass and highest frequencies, while lowering the amplitude between 1k-4k. Which probably doesn't mean much until you apply a limiter or compressor, which doesn't "perceive loudness", it sees the actual amplitude values in db. Which means that what is likely to occur is that the bass and higher frequencies are squashed, and maybe the 1k-4k range isn't or as much. I'm not sure the actual benefit, unless the mixer was also an instrumentalist and had a tendency to mix their instrument louder and on top of everything else?? :? :lol: I suppose conventional mixing is mixing by Fletcher-Munson, with the exception of the pink noise.

The gentleman in the video commented that the "better sounding records" sounded like the pink noise curve. Is he describing a pink noise curve or a limiter?? A curve is the amplitude envelope. Balance is probably a term left to panning than amplitude, because in amplitude it denotes equal power, and that conjures up static, or lack of dynamics. If everything has the amplitude envelope of an organ, or a "balanced" equal power curve, what's that do to the instruments that rely on transients for their sound? :shock: Drums, piano?? ...
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Re: Pink noise and mixing

Post by Paulie » Thu Jul 27, 2017 10:02 pm

There are several YouTube videos out there. In a nutshell pink noise is a combination of all frequencies. Fading each track soloed against a pink noise track until just below where you can hear it levels all of the tracks. Then you can go back and adjust what you want to hear more of. It's not a final mixing technique, but it is a great way to level out a mix to give you a much clearer sonic palette. As a guy with basically one ear it has helped me immensely, and combined with mono mixing my mixes are getting a lot better.

Here are the video's I've watched:

This one is pretty straightforward:
https://www.youtube.com/watch?v=3b3DtQALtuY

This one is from a training class:
https://www.youtube.com/watch?v=YzYxOt9T3b4

Here's a more visual version:
https://www.youtube.com/watch?v=dUaok-7-2L4

And one more:
https://www.youtube.com/watch?v=ayB-FlPxk_E

:)
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Re: Pink noise and mixing

Post by LamarPecorino » Fri Jul 28, 2017 7:01 pm

Paulie:

Thanks for the additional links. Can't wait to watch them. :D
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Re: Pink noise and mixing

Post by mojobone » Sat Jul 29, 2017 2:51 pm

Simply put, the goal of the operation is to equally distribute the energy across the frequency spectrum; so long as your arrangement isn't too top or bottom-heavy, this will get you in the ballpark.
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Re: Pink noise and mixing

Post by Len911 » Sat Jul 29, 2017 7:56 pm

There must be a joke here somewhere, I mean using noise as a reference for music? It would be like having a pig head on the cosmetics counter so women could test lipstick! :lol:
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Re: Pink noise and mixing

Post by ochaim » Sat Jul 29, 2017 11:37 pm

a more accurate analogy would be drawing a circle on a chalkboard by holding a piece of chalk, standing with your shoulder beside the chalkboard and swinging your arm around tracing a circle on the chalkboard.

it wont be a perfect circle but it'll be pretty close.

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Re: Pink noise and mixing

Post by cassmcentee » Sun Jul 30, 2017 7:23 am

Thank you for this post!
I've only used Pink noise for tuning my rooms before this...
I've been away from the studio for over a month and had this weekend to drop in and play a little bit.
Just dropped a Pink Noise loop into an acoustic project as a test: Acoustic guitar/Standup Bass/Violin/Fluglehorn/Drums
Followed the example of pulling levels down till the instruments nearly disappear and Holy %$&! the mix instantly sounded way better and I have more headroom to play with.
For Speed and Efficiency this might become a regular routine! :D
Again... Thank You!
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Re: Pink noise and mixing

Post by LamarPecorino » Sun Jul 30, 2017 4:07 pm

You're welcome, Cass. Thanks for sharing your positive results.
Onward and upward!
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Re: Pink noise and mixing

Post by mojobone » Mon Aug 07, 2017 10:01 am

Len911 wrote:There must be a joke here somewhere, I mean using noise as a reference for music? It would be like having a pig head on the cosmetics counter so women could test lipstick! :lol:
Bear in mind this is shaped noise we're talking about, not random noise and certainly not distortion, though it doesn't sound at all dissimilar to random or "white" noise, which as you may know, also has some musical uses, particularly in synthesis and sound design. The claps, snares and hats on those old Roland analog drum machines were mostly white noise with three different envelopes.
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Re: Pink noise and mixing

Post by Len911 » Mon Aug 07, 2017 11:48 am

And no ordinary run of the mill pig head either! :P :lol:

I'll buy shaped, harmonic, non-harmonic, but if there's one quality noise has is randomness.

It still doesn't make sense why anyone would mix with noise. :? It's a mystery
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