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Over the past 8 years, drone noise levels have shown no improvement

nswsyw

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I recently upgraded from the Air 3S to the Mavic 4 Pro and noticed a significant increase in noise. This aligns with DJI's official specs, which list the Air 3S at 81 dB and the Mavic 4 Pro at 83 dB. I’m puzzled by some YouTubers claiming the Mavic 4 Pro is quieter—my tests clearly show otherwise. Even at 100 meters altitude flying at moderate speed in a quiet suburban area, the Mavic 4 Pro’s noise is distinctly audible from the ground and noticeably louder than the Air 3S. The supposed "lower frequency" noise of the Mavic 4 Pro doesn’t make it any less intrusive.

Curious about drone noise reduction progress, I purchased a second hand Mavic Pro Platinum to compare with my other drones, testing whether DJI has made any strides in noise control since the Platinum’s release 8 years ago.

Test Method: I conducted tests in my garage, with each drone hovering at 1.2 meters above a landing pad. I measured noise levels using an iPhone app from a fixed position 6.5 meters away, averaging the results over an extended period.

Test Results:
  • Mavic Pro Platinum: 70 dB
  • Mavic 4 Pro: 72 dB
  • Neo: 74 dB
  • Mini 4 Pro: 64 dB
  • Matrice 4T (default props): 74 dB
  • Matrice 4T (low-noise props): 72 dB
The Mavic 4 Pro is consistently 2 dB louder than the Mavic Pro Platinum, a difference clearly perceptible to the human ear. I also found no evidence that the Mavic 4 Pro’s noise is “lower frequency” or more pleasant than the Platinum’s. The Neo’s small propellers produce a particularly harsh, high-pitched noise, making it louder than the Mavic 4 Pro and a staggering 10 times noisier than the Mini 4 Pro. The Mini 4 Pro stands out as one of DJI’s quietest drones, consistently measuring 8 dB lower than the Mavic 4 Pro—a 6.3-fold difference despite being only about a quarter of the Mavic 4 Pro’s weight. This suggests noise may scale non-linearly, increasing faster than weight.

Another observation which might prove this guess: the Matrice 4T is only 160g heavier than the Mavic 4 Pro but produces 2 dB more noise with default propellers. Switching to its bulky low-noise propellers, which reduce flight time, brings it down to the Mavic 4 Pro’s noise level.

Based on my testing method and corroborated by various online video reviews and DJI's published noise ratings, I’ve compiled approximate noise levels for other drones I didn’t test:

DJI made significant noise reductions from the 2016 Phantom 4 to the Mavic Pro, followed by another 4 dB drop with the 2017 Mavic Pro Platinum. However, progress stalled afterward, with the Mini 3/4 Pro being the only notable improvement since, achieving a 6 dB reduction. Meanwhile, the Mavic series has seen a gradual noise increase as airframe weight grew. The Air 3S roughly matching the noise level of the similarly sized and weighted Mavic Pro Platinum.

I hope this provides useful insight for others interested in drone noise performance.
 

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My complaint is with the beeping noise from the devices. I just use earplugs before power up as a way to deal with the sound.
 
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The FPV world of DJI drones are in need of the most help. The NEOs and Avatars are absolutely horrendous. I guess we're not going to get much improvement until the stealth drone becomes a thing.
 
The pitch and volume of the sound are determined by the size and width of the propellers and how fast they are spinning. Until someone comes up with a way to keep a drone in the air without props, you are not going to see a "stealth drone".
 
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I recently upgraded from the Air 3S to the Mavic 4 Pro and noticed a significant increase in noise. This aligns with DJI's official specs, which list the Air 3S at 81 dB and the Mavic 4 Pro at 83 dB. I’m puzzled by some YouTubers claiming the Mavic 4 Pro is quieter—my tests clearly show otherwise. Even at 100 meters altitude flying at moderate speed in a quiet suburban area, the Mavic 4 Pro’s noise is distinctly audible from the ground and noticeably louder than the Air 3S. The supposed "lower frequency" noise of the Mavic 4 Pro doesn’t make it any less intrusive.

Curious about drone noise reduction progress, I purchased a second hand Mavic Pro Platinum to compare with my other drones, testing whether DJI has made any strides in noise control since the Platinum’s release 8 years ago.

Test Method: I conducted tests in my garage, with each drone hovering at 1.2 meters above a landing pad. I measured noise levels using an iPhone app from a fixed position 6.5 meters away, averaging the results over an extended period.

Test Results:
  • Mavic Pro Platinum: 70 dB
  • Mavic 4 Pro: 72 dB
  • Neo: 74 dB
  • Mini 4 Pro: 64 dB
  • Matrice 4T (default props): 74 dB
  • Matrice 4T (low-noise props): 72 dB
The Mavic 4 Pro is consistently 2 dB louder than the Mavic Pro Platinum, a difference clearly perceptible to the human ear. I also found no evidence that the Mavic 4 Pro’s noise is “lower frequency” or more pleasant than the Platinum’s. The Neo’s small propellers produce a particularly harsh, high-pitched noise, making it louder than the Mavic 4 Pro and a staggering 10 times noisier than the Mini 4 Pro. The Mini 4 Pro stands out as one of DJI’s quietest drones, consistently measuring 8 dB lower than the Mavic 4 Pro—a 6.3-fold difference despite being only about a quarter of the Mavic 4 Pro’s weight. This suggests noise may scale non-linearly, increasing faster than weight.

Another observation which might prove this guess: the Matrice 4T is only 160g heavier than the Mavic 4 Pro but produces 2 dB more noise with default propellers. Switching to its bulky low-noise propellers, which reduce flight time, brings it down to the Mavic 4 Pro’s noise level.

Based on my testing method and corroborated by various online video reviews and DJI's published noise ratings, I’ve compiled approximate noise levels for other drones I didn’t test:

DJI made significant noise reductions from the 2016 Phantom 4 to the Mavic Pro, followed by another 4 dB drop with the 2017 Mavic Pro Platinum. However, progress stalled afterward, with the Mini 3/4 Pro being the only notable improvement since, achieving a 6 dB reduction. Meanwhile, the Mavic series has seen a gradual noise increase as airframe weight grew. The Air 3S roughly matching the noise level of the similarly sized and weighted Mavic Pro Platinum.

I hope this provides useful insight for others interested in drone noise performance.
Wow, I appreciate the work you put into this testing! :DThumbswayup It paints a clear picture of where we are right now in terms of drone noise production.

In purchasing my Mini 3, a big factor was that it's among the quietest drones out there. I hope we'll see technology progress to the point of making a low sound profile possible with larger drones as well.
 
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I haven't compared the noise my Air 3 makes with other drones, but it seems rather quiet to me except up close, at launch. Of course, I'm an old geezer, and my hearing "ain't what it used to was."

I'd imagine that noise relates to the amount of work the drone is doing to climb, accelerate and decelerate, make abrupt changes in direction, and so on. Even when a drone is hovering with the joysticks in neutral positions, there are probably some weird harmonics at play, since the RPMs of individual props are constantly changing to maintain stability in response to changes in wind speed and direction. Are there any physicists or sound engineers among us who could shed light on the subject?
 
I haven't compared the noise my Air 3 makes with other drones, but it seems rather quiet to me except up close, at launch. Of course, I'm an old geezer, and my hearing "ain't what it used to was."

I'd imagine that noise relates to the amount of work the drone is doing to climb, accelerate and decelerate, make abrupt changes in direction, and so on. Even when a drone is hovering with the joysticks in neutral positions, there are probably some weird harmonics at play, since the RPMs of individual props are constantly changing to maintain stability in response to changes in wind speed and direction. Are there any physicists or sound engineers among us who could shed light on the subject?
Most of the noise comes from the propellers slicing through the air. The air pressure that creates the lift generates a tonal noise that is the "angry beehive" sound that we all know and love. Changing the angle and width of the blades can change the pitch of the noise. And increasing the RPM of the motors will increase the noise.

As the tips of blades move through the air, vertices or tiny pockets of air are created. This contributes to the noise. Changing the shape and angle of the tips can reduce the sound.

The motors also contribute to the noise, but it's mainly the propellers. The design of the propeller blade, the number of blades, and the rotation speed are the main factors.
 
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Have you seen this new wing configuration on these Zipline Deliver Drones? Crazy quiet wishbone design.

About the 13:00 mark they take about it but the whole video is cool.

I wonder if these wings designs are patented or if we’ll see them in DJI drones or even airplanes in the future.

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Have you seen this new wing configuration on these Zipline Deliver Drones? Crazy quiet wishbone design.

About the 13:00 mark they take about it but the whole video is cool.

I wonder if these wings designs are patented or if we’ll see them in DJI drones or even airplanes in the future.

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For more detailed information, see our cookies page.
The Zipline drone hovers at 300ft. That altitude helps mitigate the volume of the drone. They have applied for a patent for their reduced noise propeller (Source).
 
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On the video it shows the drone right behind the guy and you couldn’t hear it.
It is quieter, and they have an interesting design for the propeller. It is a larger device and has larger props. Larger props can spin at a lower RPM to push the same amount of air as smaller props. Lower RPMs, less noise. The design of the props is interesting, and that design is probably what has reduced the pitch and amplitude of the noise.
 
I recently upgraded from the Air 3S to the Mavic 4 Pro and noticed a significant increase in noise. This aligns with DJI's official specs, which list the Air 3S at 81 dB and the Mavic 4 Pro at 83 dB. I’m puzzled by some YouTubers claiming the Mavic 4 Pro is quieter—my tests clearly show otherwise. Even at 100 meters altitude flying at moderate speed in a quiet suburban area, the Mavic 4 Pro’s noise is distinctly audible from the ground and noticeably louder than the Air 3S. The supposed "lower frequency" noise of the Mavic 4 Pro doesn’t make it any less intrusive.

Curious about drone noise reduction progress, I purchased a second hand Mavic Pro Platinum to compare with my other drones, testing whether DJI has made any strides in noise control since the Platinum’s release 8 years ago.

Test Method: I conducted tests in my garage, with each drone hovering at 1.2 meters above a landing pad. I measured noise levels using an iPhone app from a fixed position 6.5 meters away, averaging the results over an extended period.

Test Results:
  • Mavic Pro Platinum: 70 dB
  • Mavic 4 Pro: 72 dB
  • Neo: 74 dB
  • Mini 4 Pro: 64 dB
  • Matrice 4T (default props): 74 dB
  • Matrice 4T (low-noise props): 72 dB
The Mavic 4 Pro is consistently 2 dB louder than the Mavic Pro Platinum, a difference clearly perceptible to the human ear. I also found no evidence that the Mavic 4 Pro’s noise is “lower frequency” or more pleasant than the Platinum’s. The Neo’s small propellers produce a particularly harsh, high-pitched noise, making it louder than the Mavic 4 Pro and a staggering 10 times noisier than the Mini 4 Pro. The Mini 4 Pro stands out as one of DJI’s quietest drones, consistently measuring 8 dB lower than the Mavic 4 Pro—a 6.3-fold difference despite being only about a quarter of the Mavic 4 Pro’s weight. This suggests noise may scale non-linearly, increasing faster than weight.

Another observation which might prove this guess: the Matrice 4T is only 160g heavier than the Mavic 4 Pro but produces 2 dB more noise with default propellers. Switching to its bulky low-noise propellers, which reduce flight time, brings it down to the Mavic 4 Pro’s noise level.

Based on my testing method and corroborated by various online video reviews and DJI's published noise ratings, I’ve compiled approximate noise levels for other drones I didn’t test:

DJI made significant noise reductions from the 2016 Phantom 4 to the Mavic Pro, followed by another 4 dB drop with the 2017 Mavic Pro Platinum. However, progress stalled afterward, with the Mini 3/4 Pro being the only notable improvement since, achieving a 6 dB reduction. Meanwhile, the Mavic series has seen a gradual noise increase as airframe weight grew. The Air 3S roughly matching the noise level of the similarly sized and weighted Mavic Pro Platinum.

I hope this provides useful insight for others interested in drone noise performance.
I would have to disagree about the intrusiveness of the noise of the mav4. But everyone’s perception will vary
 
I recently upgraded from the Air 3S to the Mavic 4 Pro and noticed a significant increase in noise. This aligns with DJI's official specs, which list the Air 3S at 81 dB and the Mavic 4 Pro at 83 dB. I’m puzzled by some YouTubers claiming the Mavic 4 Pro is quieter—my tests clearly show otherwise. Even at 100 meters altitude flying at moderate speed in a quiet suburban area, the Mavic 4 Pro’s noise is distinctly audible from the ground and noticeably louder than the Air 3S. The supposed "lower frequency" noise of the Mavic 4 Pro doesn’t make it any less intrusive.

Curious about drone noise reduction progress, I purchased a second hand Mavic Pro Platinum to compare with my other drones, testing whether DJI has made any strides in noise control since the Platinum’s release 8 years ago.

Test Method: I conducted tests in my garage, with each drone hovering at 1.2 meters above a landing pad. I measured noise levels using an iPhone app from a fixed position 6.5 meters away, averaging the results over an extended period.

Test Results:
  • Mavic Pro Platinum: 70 dB
  • Mavic 4 Pro: 72 dB
  • Neo: 74 dB
  • Mini 4 Pro: 64 dB
  • Matrice 4T (default props): 74 dB
  • Matrice 4T (low-noise props): 72 dB
The Mavic 4 Pro is consistently 2 dB louder than the Mavic Pro Platinum, a difference clearly perceptible to the human ear. I also found no evidence that the Mavic 4 Pro’s noise is “lower frequency” or more pleasant than the Platinum’s. The Neo’s small propellers produce a particularly harsh, high-pitched noise, making it louder than the Mavic 4 Pro and a staggering 10 times noisier than the Mini 4 Pro. The Mini 4 Pro stands out as one of DJI’s quietest drones, consistently measuring 8 dB lower than the Mavic 4 Pro—a 6.3-fold difference despite being only about a quarter of the Mavic 4 Pro’s weight. This suggests noise may scale non-linearly, increasing faster than weight.

Another observation which might prove this guess: the Matrice 4T is only 160g heavier than the Mavic 4 Pro but produces 2 dB more noise with default propellers. Switching to its bulky low-noise propellers, which reduce flight time, brings it down to the Mavic 4 Pro’s noise level.

Based on my testing method and corroborated by various online video reviews and DJI's published noise ratings, I’ve compiled approximate noise levels for other drones I didn’t test:

DJI made significant noise reductions from the 2016 Phantom 4 to the Mavic Pro, followed by another 4 dB drop with the 2017 Mavic Pro Platinum. However, progress stalled afterward, with the Mini 3/4 Pro being the only notable improvement since, achieving a 6 dB reduction. Meanwhile, the Mavic series has seen a gradual noise increase as airframe weight grew. The Air 3S roughly matching the noise level of the similarly sized and weighted Mavic Pro Platinum.

I hope this provides useful insight for others interested in drone noise performance.
I have been flying a regular M-F, drone construction progress monitoring job, since March 1st, 2025. The airspace is located inside Fort Drum's airspace. I can tell you from expirience that the Chinooks & Blackhawks have made little to no improvement in their noise reduction efforts either.

I cannot hear my Mavic 3M at all, when those military aircraftt are 500 yards away...lol
 
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I recently upgraded from the Air 3S to the Mavic 4 Pro and noticed a significant increase in noise. This aligns with DJI's official specs, which list the Air 3S at 81 dB and the Mavic 4 Pro at 83 dB. I’m puzzled by some YouTubers claiming the Mavic 4 Pro is quieter—my tests clearly show otherwise. Even at 100 meters altitude flying at moderate speed in a quiet suburban area, the Mavic 4 Pro’s noise is distinctly audible from the ground and noticeably louder than the Air 3S. The supposed "lower frequency" noise of the Mavic 4 Pro doesn’t make it any less intrusive.

Curious about drone noise reduction progress, I purchased a second hand Mavic Pro Platinum to compare with my other drones, testing whether DJI has made any strides in noise control since the Platinum’s release 8 years ago.

Test Method: I conducted tests in my garage, with each drone hovering at 1.2 meters above a landing pad. I measured noise levels using an iPhone app from a fixed position 6.5 meters away, averaging the results over an extended period.

Test Results:
  • Mavic Pro Platinum: 70 dB
  • Mavic 4 Pro: 72 dB
  • Neo: 74 dB
  • Mini 4 Pro: 64 dB
  • Matrice 4T (default props): 74 dB
  • Matrice 4T (low-noise props): 72 dB
The Mavic 4 Pro is consistently 2 dB louder than the Mavic Pro Platinum, a difference clearly perceptible to the human ear. I also found no evidence that the Mavic 4 Pro’s noise is “lower frequency” or more pleasant than the Platinum’s. The Neo’s small propellers produce a particularly harsh, high-pitched noise, making it louder than the Mavic 4 Pro and a staggering 10 times noisier than the Mini 4 Pro. The Mini 4 Pro stands out as one of DJI’s quietest drones, consistently measuring 8 dB lower than the Mavic 4 Pro—a 6.3-fold difference despite being only about a quarter of the Mavic 4 Pro’s weight. This suggests noise may scale non-linearly, increasing faster than weight.

Another observation which might prove this guess: the Matrice 4T is only 160g heavier than the Mavic 4 Pro but produces 2 dB more noise with default propellers. Switching to its bulky low-noise propellers, which reduce flight time, brings it down to the Mavic 4 Pro’s noise level.

Based on my testing method and corroborated by various online video reviews and DJI's published noise ratings, I’ve compiled approximate noise levels for other drones I didn’t test:

DJI made significant noise reductions from the 2016 Phantom 4 to the Mavic Pro, followed by another 4 dB drop with the 2017 Mavic Pro Platinum. However, progress stalled afterward, with the Mini 3/4 Pro being the only notable improvement since, achieving a 6 dB reduction. Meanwhile, the Mavic series has seen a gradual noise increase as airframe weight grew. The Air 3S roughly matching the noise level of the similarly sized and weighted Mavic Pro Platinum.

I hope this provides useful insight for others interested in drone noise performance.
I have several DJI drones, and the latest acquisition - the NEO was surprisingly loud and irritating. I can clearly hear it over 500 feet away unlike my Mini 4 Pro, which I can't hear at that distance.
Now my Matrice M30 sounds like an airplane - especially if flying into the wind. I can clearly hear it 1300 feet away LOL although it's lower frequency seems less irritating. Ducted and shrouded fans might reduce the noise and improve the efficiency.
 
I have been flying a regular M-F, drone construction progress monitoring job, since March 1st, 2025. The airspace is located inside Fort Drum's airspace. I can tell you from expirience that the Chinooks & Blackhawks have made little to no improvement in their noise reduction efforts either.

I cannot hear my Mavic 3M at all, when those military aircraftt are 500 yards away...lol

A little improvement here

MH-X Stealth Black Hawk helicopter.​

mh-x-2011_old.jpg
 
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I have several DJI drones, and the latest acquisition - the NEO was surprisingly loud and irritating. I can clearly hear it over 500 feet away unlike my Mini 4 Pro, which I can't hear at that distance.
Now my Matrice M30 sounds like an airplane - especially if flying into the wind. I can clearly hear it 1300 feet away LOL although it's lower frequency seems less irritating. Ducted and shrouded fans might reduce the noise and improve the efficiency.
Hey mate, could you do a hover noise comparison between the M30, M3, and Mini 4 Pro?

I don’t have access to M30 but I’m really curious about its noise level. According to DJI’s Euro certification, the M30 is 7-8 dB louder than the M3, which actually makes it quieter than the Phantom 4 — I found that hard to believe. I thought the M30 was at least 10 dB louder than the M3. If you can, please hover the drones and check the noise from 5-10 meters (or yards) away, either outdoors or indoors. Thanks!
 
There was an article in Popular Mechanics recently that referenced recent findings on Leonardo Da Vinci’s screw bladed helicopter. They seemed to think that his design was more efficient and quieter for the same amount of lift. Perhaps it’s time some CFD was applied along with modern manufacturing to see if we can get away from what is essentially driven windmills.
 

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