3 ms·
Well, that's the very specific command I'm using in one of my webapps (https://datethis.app https://datethis.app), and it's one of the main performance hotspots
by raphaelj 3y ago
Well, that's the very specific command I'm using in one of my webapps (https://datethis.app https://datethis.app), and it's one of the main performance hotspots, so it's very *not* immaterial.
- timvdalen 3y agoWow, I learned something today, did not know this was a thing!
- j1elo 3y agoVery interesting! I had seen the "learn more" video already, but it stayed in a corner of my mind. To compare any given piece of sound with reference sounds for ENF analysis, the references must have been recorded to start with. The fact that a webapp like yours can exist... does it mean that we, indeed, have recordings of electrical hum spanning years and years? Are they freely available, or are they commercial products? It seems so crazy to me that someone decided to put a recorder next to a humming line just to be able to later in the future match the sound with some other recordings...
- raphaelj 3y agoFor Europe, there are academic and public organizations that publish these ENF backlog since about 2017. For US, I couldn't find any open dataset. For these regions, I'm basically recording the sound of an A/C motor to get the reference data, but I only have a few months of backlog. See here for the coverage of the webapp: https://datethis.app/coverage https://datethis.app/coverage
- garblegarble 3y agoI notice in your coverage plot, the UK National Grid data appears to end mid-2023... have they stopped providing this data?
- raphaelj 3y agoNo, but they do not provide the data in real time.
- deleted 3y ago[deleted]