Improving EVRC half rate by the algebraic VQ-CELP. - Fenghua Liu; Ryan Heidari (ICASSP, 1999)

Adaptive window excitation coding in low-bit-rate CELP coders. - Vladimir Cuperman; Allen Gersho; Jan Linden; Ajit V. Rao; Tung-Chiang Yang; Sassan Ahmadi; Ryan Heidari; Fenghua Liu (EUSIPCO, 2000)

Component-based development of DSP software for mobile communication terminals. - Kari Jyrkkä; Olli Silvén; Olli Ali-Yrkkö; Ryan Heidari; Heikki Berg (Microprocess. Microsystems, 2002)

Pitch adaptive windows for improved excitation coding in low-rate CELP coders. - Ajit V. Rao; Sassan Ahmadi; Jan Linden; Allen Gersho; Vladimir Cuperman; Ryan Heidari (IEEE Trans. Speech Audio Process., 2003)

Trends & technical challenges in conversational voice services. - Ryan Heidari (ICASSP, 2008)