Thousands are monitoring police scanners during the George Floyd protests

Post by callalex » Tue, Jun 02, 2020, 9:54 PM UTC

LinuxBender wrote: post #80

gruez wrote: post #79

Earlier quoted context omitted.

stingrays can't spoof cell ids?

They can and do, but they and the other cell sites can't up and move around. All cell sites have multiple transceivers that are directional. Each site has a unique cell ID and each transceiver has a unique ID. Your phone has GPS. If you drive around, you can find out who doesn't belong. Be careful about publicly disclosing this information.

Post by lunixbochs » Tue, Jun 02, 2020, 9:57 PM UTC

ciarannolan wrote: post #92

lunixbochs wrote: post #88

Earlier quoted context omitted.

Hi, this is a difficult problem but I've been working hard on it for a couple of days with some help. I have a pipeline and website that automatically transcribes scanner feeds that is working pretty well, and the website allows users to correct and vote on transcriptions. My goal is to train my own models on the corrected transcriptions (I work in the speech recognition space) so I can transcribe many live feeds ine…

I thought there were some open source speech-to-text models already [1]. Maybe there's something unique about how these low-quality radio transmissions sound that make these ineffective? [1] https://voice.mozilla.org/en

Post by ciarannolan » Tue, Jun 02, 2020, 10:01 PM UTC

lunixbochs wrote: post #93

ciarannolan wrote: post #92

Earlier quoted context omitted.

I thought there were some open source speech-to-text models already [1]. Maybe there's something unique about how these low-quality radio transmissions sound that make these ineffective? [1] https://voice.mozilla.org/en

I work in the speech recognition space and train my own models already. The existing open-source models aren't very good at noisy radio speech. I will specialize one of my models to this task once I have some data from the site.

Post by panda88888 » Tue, Jun 02, 2020, 10:03 PM UTC

autojoechen wrote: post #83

blantonl wrote: post #2

Hi there! I'm the owner and operator of Broadcastify, which is the platform that powers all the apps that provide police scanners and public safety communications online. I'm an active HN reader and would be glad to answer any questions folks have. It's an interesting business to be in these days...

Is there a text transcript feature for users who may want to search through the communications? I'm curious how well those speech-to-text tools work for the audio feeds.

Post by wyldfire » Tue, Jun 02, 2020, 10:07 PM UTC

protomyth wrote: post #64

bg4 wrote: post #50

Earlier quoted context omitted.

> or the night they chased a light all over hell and back Please elaborate.

Well, this is a couple decades ago - so the play-by-play is a bit lost, one cop at a locally infamous speed trap after dark started seeing a light in the woods near the road. He reported it over the radio, and speculated it might be someone spotlighting deer. Hunting deer at night is very, very illegal as the deer freeze when the light is shined at them. He didn't hear shots, but was understandably reluctant to pursu…