2011 https://www.researchgate.net/publication/221609349_spiPhone_...
0) https://www.usenix.org/conference/usenixsecurity14/technical...
1) https://infocondb.org/con/black-hat/black-hat-europe-2014/gy...
Seriously, this is the very definition of a shallow dismissal.
Absolutely. In orchestral band back in my high school days, between songs I would ask my friend on the tuba to give me a note for reference so I could tune the timpani. If you are in a band you should be able to manage to take a one second note and hold that by humming or something and tune up. I can't even read real music (I was a "percussionist" ie incompetent except at rhythms) and even I could do that. Better trained musicians than I could expand from there to the other notes you need.
You just need a single reference pitch. You can literally just play a sine wave into your headphones for a second on stage, or have your audio engineering guy feed you one. Or you have one of those dirt cheap tuners that clips to the fretboard to get you started.
The lead singer is engaging in stage banter partially to give you the time and space to do this. If your ensemble includes a pianist or a synth, you just have them slap a note for a reference.
I haven't touched a tuner in about half a decade.
i'm also the one at rehearsal literally throwing TU-3s at my bandmates who don't have tuners on their boards for some reason. you have to have a tuner if you play with others. no question.
but I don't think it will work well for this case.
My 6-string Kiesel Kyber bass would like a word with you while it sounds 41Hz.
When the right defender is near the center I'm reading ~24.74Hz, so slightly above G.
Not a very good method, prone to octave errors (showing pitch one octave lower than the correct one). Furthermore, the "delay" is an integer which limits the precision, so you need to use some form of interpolation. Also it doesn't allow to recognize multiple notes sounding together. Also, slow.
You can read the paper on the "YIN" pitch estimation algorithm which describes the method in details.
I think FFT-based methods are more reliable. I did little experimentation and when measuring a pure sine wave, the frequency can be determined with high precision (tenths-hundredths of a Herz). Not so good in presence of a noise or multiple instruments - I tried to use descending from the hill optimization to figure out the pitch of each harmonic, but it didn't work out.
And if you don't even have that, use a speaker/headphone as the microphone, probably also better results.
