In one embodiment, the processor circuit 232 of the social networking system 228 may split the speech signals into speech subcomponents. The speech subcomponents may include one or more of phonemes of the received speech signals 216, frequencies of the received speech signals 216, formants of the received speech signals 216, and semantics of the received speech signals 216. A phoneme is any of the perceptually distinct units of sound in a specified language that distinguish one word from another, for example p, b, d, and t in the English words pad, pat, bad, and bat. A formant refers to each of several prominent bands of frequency that determine the phonetic quality of vowels in the speech signals 216. Semantics may include logical aspects of meaning, such as sense, reference, implication, and logical form, lexical semantics (word relations), or conceptual semantics (the cognitive structure of meaning).
In one embodiment, when the speech subcomponents are frequencies of the speech signals, the instantaneous power in each frequency band determines the amplitude of respective actuators.