bugman wrote in Tue May 14, 2019 9:04 am:Also note that the engine sound outside, inside the cockpit, and inside the cabin are all very different!
For the copyright issue, the copyright owner of the original sound would probably have a legal claim against you. You did derive your sounds from their property, independently of what the end creation is or even sounds like. Remember that we have to abide by the copyright laws of the entire planet to be legally safe (so US or European fair use augments do not work here). So the safest would be to use only
GPLv2+ or public domain sources. In most cases you can ask the original content creator if they'll licence just the sound to you as GPLv2+ (this is the
GNU General Public Licence version 2 or later, with zero additional restrictions)., or if they'll let you use it as public domain. You'll need a public statement though that we can legally rely on. For example you can ask in the YouTube comments section, if that is the source. If you detail what you'd like to do with the sound track, and that it will be open source and you'll be making zero profit, then most people will be reasonable and grant you permission.
Regards,
Edward
I'm quite aware of high-frequency drop-off, having done a fair amount of professional audio in the past (including payware); only someone naive would use the same audio for inside and outside.
All my sounds are my own work, and there's no possible way to prove which JT3D engine of the thousands manufactured a particular harmonic analysis came from (hint: it isn't from the video posted earlier in the thread -- for all you know, it may be something I or a friend recorded): the whole point of decomposition and reconstruction is to eliminate extraneous noise and end up with a much purer sound than just samples., which are, frankly, cheesy, at least in my opinion, since very few in my experience take time to ensure that the loops begin and end at the convergence of all the constituent harmonics at exactly the same phase. Fourier analysis is about sine waves -- analog world, not digital, and not recorded and pasted together audio directly from something recorded into a microphone...
I was trying to offer something to improve the FlightGear experience as a favor to the community, for free (GPL2), but it seems like this may be more hassle than it's worth, so perhaps it's best if I simply not release the work at all. People can have the 737 sounds for the 707 and think that's what 707s sounded like...
Thank you for your input.