Cochlear implants (CIs) allow hearing impaired individuals to understand speech with remarkable efficiency. On the other hand, they poorly perform in music perception. It may be possible to improve the music experience with the use of other senses such as touch. We present Tickle Tuner, a haptic feedback device suitable for musical training of CI users. The prototype is composed of two high-quality haptic actuators and an external Digital to Analogue Converter (DAC) hosted in a 3D printed enclosure coupled with a smartphone. We describe the design and implementation of the prototype, the analysis of its characteristics and we introduce a test bench for the design of different mappings between sound and vibrations.

This article describes the design, implementation, and evaluation of vibrotactile concert furniture, aiming to improve the live music experience of people with hearing loss using hearing technology such as cochlear implants (CI). The system was the result of a series of participatory design sessions involving CI users with different hearing assistive setups (bi-implant, bimodal, and monoimplant), and it was evaluated in a concert scenario (drums, bass, and female vocals) at the Royal Danish Academy of Music. The project aimed to improve the music appreciation for CI users by providing a multisensory concert designed with CI challenges in mind, but not excluding normal-hearing individuals or individuals with other forms of hearing aids from participating in the event. The evaluation was based on (video-recorded) observations and postexperience semistructured interviews; the data were analyzed using event analysis and meaning condensation. The results indicate that tactile augmentation provides a pleasant experience for CI users. However, concertgoers with residual hearing reported being overwhelmed if the tactile stimulation amplitude exceeds a certain threshold. Furthermore, devices that highlight instrument segregation are preferred over ones that present a tactile mixdown of multiple auditory streams.

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