Added Bingabr et al. 2008 style of filters and actual analysis bands.
Added envelope modifiers: ACE-like strategy and threshold.
Doesn't seem to crash, but no thorough verification was done yet.
Might be possible to code in a more efficient way.
Added manual (incomplete) for the vocoder.
Update vocoder manual (still not complete).
Finalized initial version of vocoder manual.

Could still be expanded, though.
Added links for DOIs in vocoder manual.
Added word of warning in vocoder manual.
Updated code while writing vocoder manual.
Merge pull request #1 from egaudrain/realistic_simulations

Realistic simulations