Krisp.ai – Mute background noise during your calls • Hacker News Board

Re: Krisp.ai – Mute background noise during your calls

#41

Post by tootie » Thu, Nov 15, 2018, 7:13 PM UTC

davitb wrote: post #12

mises wrote: post #3

Here's to hoping they make a version for Windows and/or Linux. Mac support is nice, but this seems business-focused (though handy for casual use). Most businesses, especially outside of Silicon Valley, don't use Mac; Windows will likely be a larger market.

2Hz CEO here (we built Krisp). Windows support will come in Dec. We are working hard on it.

What does it actually filter on? Is it trained to recognize my voice or just any human voice? I can see you can smartly filter out noisy noise, but can it also filter out nearby conversations like in an office environment?

Re: Krisp.ai – Mute background noise during your calls

#42

Post by fspacef » Thu, Nov 15, 2018, 7:15 PM UTC

Excited to check this out but looks like it's got the HN Hug. Going to recommended this to my dad who always takes calls from noisy airports.

Re: Krisp.ai – Mute background noise during your calls

#43

Post by president » Thu, Nov 15, 2018, 7:18 PM UTC

I just tried this over a Zoom call. It worked well but not as well as the samples on their website would make you believe. Background noise was muted during silence periods but not always during speech from the active speaker. This makes it even more annoying because you hear tidbits of background noise only at the same time that the active speaker is speaking. I'm still very impressed though.

Re: Krisp.ai – Mute background noise during your calls

#44

Post by rcthompson » Thu, Nov 15, 2018, 7:19 PM UTC

Is there a way to run an existing audio file through this to clean it up? For example, if I have a video of a presentation with lots of background noise like chairs creaking, people coughing, etc.?

Re: Krisp.ai – Mute background noise during your calls

#45

Post by sirfz » Thu, Nov 15, 2018, 7:21 PM UTC

This looks nice, I hope we can get a Linux version too

Re: Krisp.ai – Mute background noise during your calls

#46

Post by colechristensen » Thu, Nov 15, 2018, 7:26 PM UTC

Isn't the real solution having two or more microphones and using the multiple signals to locate and isolate the desired sound?

Re: Krisp.ai – Mute background noise during your calls

#47

Post by zwarag » Thu, Nov 15, 2018, 7:28 PM UTC

rcthompson wrote: post #44

Is there a way to run an existing audio file through this to clean it up? For example, if I have a video of a presentation with lots of background noise like chairs creaking, people coughing, etc.?

Sure you can. I don't think anybody can stop you doing that. You just need 2 computers. On one you play the clip. On the other you record it. The remove the audio from the video and put the new audio onto it.

Re: Krisp.ai – Mute background noise during your calls

#48

Post by zwarag » Thu, Nov 15, 2018, 7:31 PM UTC

Will this stay free or is it only free during beta?

Re: Krisp.ai – Mute background noise during your calls

#49

Post by httpsterio » Thu, Nov 15, 2018, 7:32 PM UTC

colechristensen wrote: post #46

Isn't the real solution having two or more microphones and using the multiple signals to locate and isolate the desired sound?

Yes, that's how phone microphones for example work.

To remove static background noice would just need to get a silent sample and reverse out the polarity of the static noise from the audio signal. It can be done real-time or in post production.

To sum out random background sounds you would need an omnidirectional mic that picks up everything. Then you'd need a close range shotgun type mic from which you subtract all that noise mix picks out.

Re: Krisp.ai – Mute background noise during your calls

#50

Post by ixtli » Thu, Nov 15, 2018, 7:33 PM UTC

otterley wrote: post #38

nathannecro wrote: post #36

How do they make money? All audio is processed on device, but is the goal to use the public training/learning to tailor a more robust model which they can sell commercially/integrate into apps/phones/etc?

My suspicion is that the founders/engineers will be acqui-hired for a not-insignificant sum by one of the existing big players in the teleconference space (Zoom, Google, Cisco, etc.).

Further, this is probably their goal. In fact, I wouldn't be surprised if Apple bought something like this as system-wide background noise canceling would be a fantastic OS feature.