Noise Canceller

Delay is too high and can't be seg due to offscreen

Fail cause delay nice try

delieidb as hell stupid app don't install

Omg, this is Android 2.2 app

Noise Canceller app: I would pay if the app works. It replays the conversation as an echo. It doesn't cancel. the background noise, as I hope for. The developer also mistakes phase shifting with delay adjustment. Adjusting the phase of the output does nothing to the delay. I hope he would let the app sample background noise, and allow delay, phase, and volume adjustment of thr output. I would like to use this to reduce driving noise in a car someday. Thanks.

The delay in the phone is enough that it can be clearly distinguished between the source and the headphone output. In my case over 1 second of delay. There is no way, even with 359 degrees of phase adjustment that this app can cancel sound. It is not necessarily the app but the delay produced in the phones circuitry. This app will only work on a phone with no delay.

Couldn't get it to work on my phone. However, the HTC One has a built-in noise canceling mic for in call use. On the back of the handset at the top right. The HTC One, LG G2, Galaxy S4 & S5 all use the Qualcomm Fluence technology specifically designed for this purpose. This app can really work and work well, it has the potential. Sadly, only with the right phone I think. To have a mobile noise canceling device would be awesome :). This can really work Haowen, and I will happily pay for it when it does :)

I wanted it to work but it does not. I hoped that people thought it didn't work cause it didn't cancel out sudden noises like voices or keyboards but it doesn't work for me to cancel out the constant noise of fans in my server room. It actually makes the problem worse. I tried slowly moving through different amplitudes and phase offsets but no luck. Its a shame but I expect it is partially the fault of the microphone. It isn't really designed to pick up background noise with enough clarity to do the trick.

To those that rate the app poorly. You know nothing. If your phone has a delay in the microphone, that is a hardware issue, not a bad program. On the other hand I have a cheap no name tablet that has no delay and this app will work with any headphone.

The big problem I found is that it was too slow inverting the sounds. All it really did was create a echo that was usually louder than the source. It might work on some constiant noises but the ones I tested (airplane, bus, fan, and a/c) it just made it worse. If the app could process the sounds as fast as the mic is picking them up it might work. There is also a clicking noise that starts from time to time. Thought it was from me tapping the screen at first but it happened other times too.

there is clearly a huge delay from source and processed output. This is clearly a processing delay. mine is a quad core processor. As someone mentioned in the comments, it might work well for octa core processors. give it a try anyway.. developers, it would be great if you guys could bring down the processor intensiveness. thanks..

Output phase shift should be controlled by the peak-to-peak time (or the input frequency). The phase shift control should be replaced with a delay control (because every device will have a delay between input and output). A heavy load on the processor will add delay. Output volume of the inverted signal should be squelched on any missed input peaks, and unsquelched after 3 matched peaks. That will address processor load and random noise in the most appropriate way.

Great idea, developer should definitely continue working on it. But on my Lenovo-Motorola the time delay is about 2½ seconds. Even with continuous noise it doesn't seem to feedback balanced phase noise to cancel it out. Rather I hear a continual shhh sound with a blip and moment of silence every 2½ seconds or so. My experience with the app is 1 star but I'm giving 2 stars for the dev trying to do something very difficult.

If you had a series of samples instead of it trying to block out the real world noise I think it would work alot better. Plus after a few minutes of fiddling it stopped sampling. Get things like white noise, pink noise, ac and airplanes in a loop and let us adjust the phases of those and you got something that would really work. Real world sampling would never work as an app. It only works on bose because its instantaneous and built into the headphone. I might add it doesn't work all the well. You are on to something but this is the wrong approach.

shouldn't it be trying to reduce consistent noise. (Understanding that there could be a delay in microphone to audio transmission + processing)

It sits there doing nothing. I had headphones in, it simply doesn't make noise

Worse than useless. I heard all the original sound, plus a fuzzy echo from my earbuds.

Android just can't process and send the signal fast enough... About a half second delay between the noise and the inverted signal, which sadly makes this app utterly useless. The concept is there though..!

YOu get double the noise and even when the noise has stopped, this app keeps it going until you turn it off.

With my Galaxy s5, it just echoed the existing sound 1 beat after it happened. That's doubling the sound I am trying to ignore.

Doesn't work, the delay is too great to cancel the noise. 2 stars just because it's a good idea that needs a lot more work.

no matter what I did with the settings the delay was over a second. This may be a issue with Android as its explained in app description.

It's an echo generator not noise canceling. Might work in environment with repeating sounds. Uninstall.

Good idea in theory, but doesn't exactly help when audio takes two seconds between microphone and headphone.

Too much delay to be useful... but what about coupling with a second smartphone or a bluetooth headset placed some meters apart from the user? The far microphone would catch the sound, invert it, and send it to the user at the speed of light rather than that of sound, gaining some time.

Creates a high pitch sound sometimes while using the sliders which can startle you. Kudos to the developer for the idea. However does not work due to delays in sound processing - hardware / OS dependency.

I was unable to close the time lag between the noise and inverted sound coming from the headphones enough to see if this could work. Needs more research.

People giving this 1 star don't understand what it is. It can only block repetitive white/pink noise, but it does that with great effect.

Latency is too great to work. Shame. Not to mention the awful tinnitus creating noise that suddenly comes out of nowhere... NOPE