Excitation modeling based on speech residual information. - Peter Lupini; Vladimir Cuperman (ICASSP, 1992)

A 2.4 kbit/s CELP speech codec with class-dependent structure. - Peter Lupini; Hisham Hassanein; Vladimir Cuperman (ICASSP (2), 1993)

Spectral excitation coding of speech at 2.4 kb/s. - Vladimir Cuperman; Peter Lupini; B. Bhattacharya (ICASSP, 1995)

Subjective performance of spectral excitation coding of speech at 2.4 kb/s. - Peter Lupini; Vladimir Cuperman (EUSIPCO, 1996)

Nonsquare transform vector quantization. - Peter Lupini; Vladimir Cuperman (IEEE Signal Process. Lett., 1996)

Coding of variable dimension speech spectral vectors using weighted nonsquare transform vector quantization. - Chunyan Li; Peter Lupini; Eyal Shlomot; Vladimir Cuperman (IEEE Trans. Speech Audio Process., 2001)