fig7

Figure 7. Throat-mounted mechanical sensors for SSIs. (A) Signals at different frequencies from the throat. The right part of (A): Reproduced with permission from Ref. [1] Copyright 2023, Springer Nature; (B) SSIs enabled by soft magnetic composites for monitoring throat movements. Adapted from Ref. [54], under CC BY 4.0 license; (C) SSIs enabled by ion gel-based sensors for monitoring pressure at the skin-sensor interface on the throat. Adapted from Ref. [128], under CC BY 4.0 license. SSIs: Silent speech interfaces; PDMS: polydimethylsiloxane; MI: magnetic induction; MC: magnetomechanical coupling.