Moondream 3-in-1 Sound Insulation Curtain with Noise-Blackout-Thermal Insulation, Patented Technology, 55" Width x 95" Length, Grey (Cloud MC09), Grommet, 1 Panel

I am a professional and measured the sound difference with a professional meter and there was no measurable difference. They are in the mail on their way back to the company.

There’s not much to like when it doesn’t work it doesn’t reduce the noise And it is sold as a soundproof curtain which is miss leading it should be sold as a noise reduction curtain that works at the minimum level

YES, these curtains do indeed significantly reduce noise. The noise reduction power is obviously not going to be as good as a wooden door, but the curtain has about 30% the noise reduction power of one. That's not bad considering it's a curtain. I have tested them extensively, because my sister has a loud 2 year old, and these curtains are helping me immensely. I placed two of them about 6 inches apart in the hallway next to my door. I don't hear the 2 year old playing anymore. When the curtains are open, my room door doesn't have enough power to reduce the noise enough. When I close both curtains, there is a huge difference and I rarely hear anything. If you are using only one curtain by itself, don't expect it to completely block sounds. But it does reduce them, and you can easily test this. Put up the curtain in a hallway, and turn your vacuum cleaner on about a few feet away. Then open and close the curtain and you'll hear the drastic difference. And by using two curtains together in that way, you get almost the same noise reduction of one typical wooden door, or very close. This is impressive because all other curtains I have used produce no significant noise reduction at all. So for all the people who claim this doesn't work, they are either blind or they have very unrealistic expectations, thinking this curtain would somehow reduce all noise to zero. Not even a door will do that.As a tip, if you put these curtains in your hallway, place the curtain rod at a slight angle towards one end, and make sure the curtain sits about one inch off the ground. This will allow the curtain to close all by itself after someone pushes it aside when walking by. I did this myself because my sister would never close the curtain. But by slightly angling the curtain rod, gravity pulls it shut. You have to then use some string or something to tie the other side of the curtain to the end of the curtain rod so that it doesn't also being to slide, but that's easy to do. In the end, you have a very effective sound barrier if you place two of these curtains 6 inches apart in a hallway, and they always remained closed if you angle the curtain rod a bit. I also have one of these in front of my door, which also helps. It's a tight squeeze depending on how much room there is for the curtain rod, but you can usually make it work. You can be very creative with these things and where you place them. You can also use a number of pinching clips to shorten the curtain to any length you want.

I was super excited to receive these because I live in SF where it is extremely noisy and the walls are very thin. I installed them and did a test of the noise with and without the curtains and was extremely disappointed. These do not reduce the noise at all and do not seem very thick either. I am considering returning the product now. Not worth the money.

I bought two panels and absolutely love them. They look great out of the box, no smell and no wrinkles. They are 100% effective at blocking light. I can hold my iPhone's LED light directly behind the curtain and no light will shine through.They are also effective at blocking noise, but you need to have some reasonable expectations. Its clear different people have different expectations, which is why these curtains draw mixed reviews for their noise cancellation. There are some noises that these curtains will NOT block, but then again, I doubt any curtain can block all noises.I live in a busy city so I can give you some examples. The curtains will not block out the sirens from emergency vehicles - no chance! They also cannot block the loud, low frequency sounds such as the rumble of a large truck as it rolls right past my building, or loud bass from a car radio or whatever.What they can do, however, is significantly reduce the mundane droning noises off the street. Typical passenger vehicles are reduced to minor background noise, and the sound of people on the sidewalk is also greatly reduced. You should note that "reduced" does not always mean "entirely eliminated" though. Every now and then some drunk person will be yelling loudly on the sidewalk, and that can still be heard, but at a greatly reduced volume.I am actually interested in soundproof enough to the point where I want to make a YouTube video demonstrating what can and cannot be reduced. For now though, I can tell you that I got about 3-6dB reduction as measured by a professional iPhone app that I use. Just know that the 3-6dB reduction is an average based on the ambient noise at my condo. Noises that are particularly loud, or of a particularly low frequency (think bass) will continue to get into the unit.I gave four stars on the "value for money" because they are a bit pricey, but I am not aware of a comparable alternative that is cheaper, so I guess the price is fair. I also gave only four stars on material quality because the liner is marketed at being aluminum but the contents of the liner are, in fact, only about 0.1% aluminum or something like that. For practical purposes, just think of this as a polyester curtain.

I bought these curtains as a door treatment rather than a window treatment. I have a home office and small kids who make a good bit of noise in the room next door. I took a three-prong approach: (1) these curtains, hemmed long enough that they are actually dragging on the floor (that's important), (2) an adhesive deadening mat, typically used in cars, on the door, and (3) a door sweep to seal the gap between the door and the floor. I'm very happy with the results! I took some professional recordings of the noise level before & after, broken out by frequency. It's not realistic to expect these to actually eliminate noise but they do decrease it quite a bit! I was especially pleased at the improvement at the 125Hz range. For those interested, I'm including links to the deadening mat and sweep below.Deadening Mat: https://www.amazon.com/gp/product/B07B75PD8BSweep: https://www.amazon.com/MAXTID-Stopper-Blocker-Underdoorseal-Soundproof/dp/B09GF8Z6FJ

Did little to none soundproofing