Editing Vocoder (section)

===Waveform-interpolative===
Waveform-interpolative (WI) vocoder was developed at [[AT&T Bell Laboratories]] around 1995 by W.B. Kleijn, and subsequently, a low- complexity version was developed by AT&T for the DoD secure vocoder competition.  Notable enhancements to the WI coder were made at the [[University of California, Santa Barbara]].  AT&T holds the core patents related to WI and other institutes hold additional patents.<ref name="kleijn95">
{{cite book
 | last1     = Kleijn | first1 = W.B.
 | last2     = Haagen | first2 = J.
 | others    = (AT&T Bell Labs., Murray Hill, NJ)
 | chapter     = A speech coder based on decomposition of characteristic waveforms
 | doi       = 10.1109/ICASSP.1995.479640
| title = 1995 International Conference on Acoustics, Speech, and Signal Processing
 | volume = 1
 | pages = 508–511
 | year = 1995
 | isbn = 978-0-7803-2431-2
 | s2cid = 9105323
 }}</ref><ref name="kleijn96">
{{cite conference
 | last1      = Kleijn | first1 = W.B.
 | last2     = Shoham | first2 = Y.
 | last3     = Sen    | first3 = D.
 | last4     = Hagen  | first4 = R.
 | others    = (AT&T Bell Labs., Murray Hill, NJ)
 | chapter     = A low-complexity waveform interpolation coder
 | conference = [[International Conference on Acoustics, Speech, and Signal Processing]]
 | doi       = 10.1109/ICASSP.1996.540328
 | title = 1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings
 | volume = 1
 | pages = 212–215
 | year = 1996
 | isbn = 978-0-7803-3192-1
 | s2cid = 44346744
 }}</ref><ref name="gottesman01">
{{cite journal
 | last1     = Gottesman | first1 = O.
 | last2     = Gersho    | first2 = A.
 | others    = (Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA)
 | title     = Enhanced waveform interpolative coding at low bit-rate
 | journal   = IEEE Transactions on Speech and Audio Processing
 | volume = 9
 | issue     = November 2001
 | pages = 786–798
 | doi       = 10.1109/89.966082
| year = 2001
 | s2cid = 17949435
 }}</ref>