Chance to get loudness compensation?

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JoonSumisu
Posts: 10
Joined: Wed Feb 16, 2022 4:10 pm

Chance to get loudness compensation?

Post by JoonSumisu » Sun Dec 25, 2022 4:16 pm

Hello Neutron

So recently, I try the airpods pro 2, which got certain level of loudness compensation, which works interesting and makes sense to me why some hi-end dac got it.

I know the loudness compensation function in app based on system volume may not function well, it may need to be adjusted by individual to individual, but it is something exciting to me, and there is not an app that can do it.

Best

blaubär
Posts: 3640
Joined: Tue Apr 02, 2019 6:48 am

Re: Chance to get loudness compensation?

Post by blaubär » Sun Dec 25, 2022 5:24 pm

JoonSumisu wrote:
Sun Dec 25, 2022 4:16 pm
So recently, I try the airpods pro 2, which got certain level of loudness compensation, which works interesting and makes sense to me why some hi-end dac got it.

I know the loudness compensation function in app based on system volume may not function well, it may need to be adjusted by individual to individual, but it is something exciting to me, and there is not an app that can do it.
What would you expect a loudness correction to do ? Offset the loudness-frequency-dependency of human hearing ?

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The problem with these "loudness-corrections" ( if it's that what I think you want ) is that it is not clear ( from the prespective of the music player app ) what signal level will result in what final loudness for the listener's ears, so a simple on/off-switch wouldn' suffice, but one would have to add some calibration.

blaubär
Posts: 3640
Joined: Tue Apr 02, 2019 6:48 am

Re: Chance to get loudness compensation?

Post by blaubär » Mon Dec 26, 2022 10:45 am

How could this be implemented ? Perhaps by adding yet another equalizer ( beside EQ and FRC ) with say a dozen presets that represent the loudness-intensity-curve at different levels. And then perhaps a coupling of the hardware gain to these presets, which would yet have to be calibrated as to its minimum and maximum values ... or one presest which strength would be regulated ... something like this. A preset "loudness" already exists :

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JoonSumisu
Posts: 10
Joined: Wed Feb 16, 2022 4:10 pm

Re: Chance to get loudness compensation?

Post by JoonSumisu » Wed Jan 04, 2023 10:29 am

Thank a lot blaubär,

Yeah..... I did some research, now the apple's loudness-corrections is something very general and tied with the hardware, means the software knowing how loud the hardware make.

for personal loudness-corrections, it requires a very very complex testing, even with the general loudness-corrections, I still need to test how loud my headphone make in different system volume.

seen the day of ultimate sound is closing to us

blaubär
Posts: 3640
Joined: Tue Apr 02, 2019 6:48 am

Re: Chance to get loudness compensation?

Post by blaubär » Wed Jan 04, 2023 3:35 pm

JoonSumisu wrote:
Wed Jan 04, 2023 10:29 am
seen the day of ultimate sound is closing to us
Well, if you play the music in roughly the volume that it is intended to be heard with then you don't need the correction.

Bow_Wazoo
Posts: 24
Joined: Wed Jun 10, 2020 8:30 pm

Loudness correction

Post by Bow_Wazoo » Sun Jun 23, 2024 9:31 am

Are there any plans for Neutron, to implement loudness correction like Apo equalization does?

If not, do you know of an app that would allow this on Android?

blaubär
Posts: 3640
Joined: Tue Apr 02, 2019 6:48 am

Re: Loudness correction

Post by blaubär » Sun Jun 23, 2024 11:44 am

Could you elaborate - what is "loudness correction like Apo equalization does" ?

Bow_Wazoo
Posts: 24
Joined: Wed Jun 10, 2020 8:30 pm

Re: Loudness correction

Post by Bow_Wazoo » Sun Jun 23, 2024 11:53 am

Loudness Correction is a feature that adjusts the frequency response of the audio signal according to the human perception of loudness at different sound levels.

This means that at low volume levels, the bass and treble may sound weak or dull, with the midrange dominating the spectrum. Loudness Correction can boost the low and high frequencies depending on the volume to create a more balanced and natural sound.
Fletcher-Munson-Curve-Explained-Using-Equal-Loudness-Contour-to-Mix-1.png
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https://youtu.be/qIXivIfILw4?si=xDKi9SI6c8nIYsS8

MotleyG
Posts: 212
Joined: Thu Sep 23, 2021 6:19 pm

Re: Loudness correction

Post by MotleyG » Sun Jun 23, 2024 12:00 pm

Bow_Wazoo wrote:
Sun Jun 23, 2024 11:53 am
Loudness Correction is a feature that adjusts the frequency response of the audio signal according to the human perception of loudness at different sound levels.

This means that at low volume levels, the bass and treble may sound weak or dull, with the midrange dominating the spectrum. Loudness Correction can boost the low and high frequencies depending on the volume to create a more balanced and natural sound.
So what you are requesting is an equalizer that shifts based on each volume step in Neutron? That can be quite ambitious given the number of steps. And this does not account for external influences on the levels, such as hi efficiency headphones, or use separate DACs or amplifiers.

Bow_Wazoo
Posts: 24
Joined: Wed Jun 10, 2020 8:30 pm

Re: Loudness correction

Post by Bow_Wazoo » Sun Jun 23, 2024 12:10 pm

Yes, that's right.
That requires a measurement first, and that the volume is regulated by the relevant program.

Well, as I said, Apo equalizer supports this function. Unfortunately, this program is not available for Android.
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