I wonder if Rick Astley will be dismayed or delighted to learn his music has been displaced by Taylor Swift's as default prank audio.
The Taylorator – All Your Frequencies Are Belong to Us
41–50 of 101 posts
Re: The Taylorator – All Your Frequencies Are Belong to Us
#42> an SDR is that a sound card takes real-valued samples, and an SDR takes complex-valued samples Coming from a DAW background this concept was incredibly interesting. I am curious if stereo audio has ever been represented in this way, or if it is generally just used for the half sample rate? Actually thinking on this now I guess that doesn't really make sense. But still really interested in this alternate view of sam…
Testing has shown that humans can't hear phase differences, unlike radio demodulators, so there's no real use for giving a sound card complex numbers.
(Before someone replies about snare drums, 3:1 rule, etc. — of course if there are phase differences in the audio before you mix it, it will cause audible artifacts in the mixing process. Which is why there's an effect called a "phaser".)
Re: The Taylorator – All Your Frequencies Are Belong to Us
#43Earlier quoted context omitted.
I think the theory is that every car that has an FM radio has it tuned to something . So no matter what, as soon as you put on the FM radio, it would have the audio.
Yeah, until you have a 5 year old (probably me in this case in the 80s) that plays with random knobs on the dash when they get in the car. Is it volume? Is it the tuner? We’ll know once the car turns on!
It's broadcasting on every valid ("odd") frequency. I guess it still depends on if you have an analog or digital dial.
Re: The Taylorator – All Your Frequencies Are Belong to Us
#44Instead of struggling to generate this in real time, perhaps you could generate it in advance and loop it? The median Taylor Swift song is 3:52, then at 20M samples per second (and four bytes per sample) you need a little over 19GB [1] and I think streaming from SSD should be fast enough. Could probably also compress it. [1] 20e6*(60*3+52)*4 / 1e9
I'm not sure if Stephen is on HN, but I asked him this question last week[1]. His response was that since the songs are different lengths, a file that was truly loop-able would be super long (if you have a 90 second song and a 2 minute song, you need 6 minutes of audio to create a file that perfectly loops both of them)
Seems like there is probably some set of clever hacks here that could get you around this (although I don't know enough about radio to propose any); I think I asked about pre-computing some state for each song on its own and he had a good response to why that either didn't work or didn't help much, but unfortunately I don't remember it!
[1] we are both currently at the Recurse Center / https://recurse.com
Re: The Taylorator – All Your Frequencies Are Belong to Us
#45I am so sad this was not implement in Swift.
Re: The Taylorator – All Your Frequencies Are Belong to Us
#46Must save it. Some day it might be needed to do some advertising regarding mutiny against government or to gather people in the post apocalypse time...
Re: The Taylorator – All Your Frequencies Are Belong to Us
#47With some filtering on the output to knock down harmonics and aliasing noise, and as long as the power output is low enough, this could actually be legal in the US. IANAL, etc, but this is my understanding: It's actually ridiculously tricky to measure transmitter power output in the terms that the FCC regs are written in, but the rule of thumb is that, given the receiver sensitivity of a typical radio, if you lose th…
If by "ridiculously tricky" you mean "requires specialized equipment and domain knowledge". Like say, skiing.
With a cheapish Rigol spectrum analyzer and homebrew receive antennas and DIY wooden/pvc tripods you could probably do 3m open-air measurements to within 3dB of what you would measure in an anechoic chamber at a test laboratory if you were very careful. I can 100% assure you that is possible with a commercial dipole kit and horn antenna, neither of which is that expensive if you're getting paid. This in in the FM band so you could use dipoles and a low-end analyzer to the tenth harmonic.
Re: The Taylorator – All Your Frequencies Are Belong to Us
#48With some filtering on the output to knock down harmonics and aliasing noise, and as long as the power output is low enough, this could actually be legal in the US. IANAL, etc, but this is my understanding: It's actually ridiculously tricky to measure transmitter power output in the terms that the FCC regs are written in, but the rule of thumb is that, given the receiver sensitivity of a typical radio, if you lose th…
> if you lose the signal when you're more than 200 feet from the transmitter, you're probably in the clear. With the FCC maybe, but someone far worse will be interested, the RIAA. It's copyright infringement by illegal broadcast.
> It's copyright infringement by illegal broadcast.
And I'd bet they would make a good attempt at fining you for each channel that you modulated for.
Re: The Taylorator – All Your Frequencies Are Belong to Us
#49With some filtering on the output to knock down harmonics and aliasing noise, and as long as the power output is low enough, this could actually be legal in the US. IANAL, etc, but this is my understanding: It's actually ridiculously tricky to measure transmitter power output in the terms that the FCC regs are written in, but the rule of thumb is that, given the receiver sensitivity of a typical radio, if you lose th…
The main problem with this line of reasoning is that it neglects important parts defined elsewhere making it seem like this is legal when its not. IANAL, but I do hang out with a lot of hammies. You can't help but absorb a lot of technical stuff with them around. Like for example, https://www.fcc.gov/enforcement/areas/jammers It need not saturate the bands, you technically are in violation the moment a non-licensed e…
I hold a ham radio licence in a couple of countries, although what's happening here is far outside of the remit of ham operations.
I'm pretty certain this is not legal in my locale, but I don't think the author of the article is making this out to be legal - and I don't think they should get in trouble for any of this publishing [assuming you're adressing them, not the commenter]. Perhaps the equivalent of a script kiddy could get up to no good with it, nothing new from the last 20 years of computer hacking then.
I'd far rather see enforcement and ire directed at the proliferation of poorly shielded junk that spews noise all over the spectrum, at surprisingly high power, that seems to have no trouble being sold online or imported for sale in many countries - and is often, strictly speaking, not legal with regards to necessary EMC, and probably safety, standards.
Re: The Taylorator – All Your Frequencies Are Belong to Us
#50Instead of struggling to generate this in real time, perhaps you could generate it in advance and loop it? The median Taylor Swift song is 3:52, then at 20M samples per second (and four bytes per sample) you need a little over 19GB [1] and I think streaming from SSD should be fast enough. Could probably also compress it. [1] 20e6*(60*3+52)*4 / 1e9
I'm not sure if Stephen is on HN, but I asked him this question last week[1]. His response was that since the songs are different lengths, a file that was truly loop-able would be super long (if you have a 90 second song and a 2 minute song, you need 6 minutes of audio to create a file that perfectly loops both of them) Seems like there is probably some set of clever hacks here that could get you around this (althoug…
I was thinking you could pick a group of songs that were close to the same length, and then make up the difference with fading, gaps, or a fake DJ? For this to work I think you want your overall loop to be just a few minutes.