WMUSA (MUltichannel Speaking Automaton)
WArticulatory synthesis
WCereProc
WDECtalk
WSpeech-generating device
WEbert test
WEcho 2
WEuphonia (device)
WGeneral Instrument SP0256
WHaskins Laboratories
WMockingboard
WNETtalk (artificial neural network)
WPhasor (sound synthesizer)
WPSOLA
WSensory, Inc.
WTexas Instruments LPC Speech Chips
WVoder
WVoiceroid
WWaveNet
WWolfgang von Kempelen's speaking machine
WWordQ+SpeakQ