A haptic actuator comprising a base and a haptic transducer at least partially suspended by the base. The haptic transducer comprises a substrate and a smart material operably connected to the substrate. The smart material has resonance in response to an electrical signal having a determined frequency, and the resonance causes the haptic transducer to vibrate and deliver a haptic effect.

A haptic actuator comprising a base and a haptic transducer at least partially suspended by the base. The haptic transducer comprises a substrate and a smart material operably connected to the substrate. The smart material has resonance in response to an electrical signal having a determined frequency, and the resonance causes the haptic transducer to vibrate and deliver a haptic effect.

A haptic actuator comprising a base and a haptic transducer at least partially suspended by the base. The haptic transducer comprises a substrate and a smart material operably connected to the substrate. The smart material has resonance in response to an electrical signal having a determined frequency, and the resonance causes the haptic transducer to vibrate and deliver a haptic effect.

The present invention provides a vibration audio system for transmitting an audio signal outputted from a sound source to a listener in the form of vibration while reducing output level of the signal and power consumption. The system includes an envelope detection unit (204) for detecting an envelope signal of the audio signal outputted from a sound source, a vibration transmission member for allowing the listener to perceive vibration of a low-frequency sound outputted from a low-frequency output speaker that outputs audio signals, and a frequency conversion unit (205) for generating an audio signal frequency-converted on the basis of resonant frequencies by multiplying the envelope signal by sine waves having the same frequencies as resonance frequencies obtained from an impulse response of the low-frequency output speaker disposed in the vibration transmission member. The audio signal frequency-converted by the frequency conversion unit (205) is outputted from the low-frequency output speaker.

A vibrotactile device including a first actuator channel having a vibrotactile actuator and a resistor with a predetermined resistance positioned at an input of the vibrotactile actuator, a processor configured to output a driving signal for driving the vibrotactile actuator, and a voltage sensor configured to measure a voltage drop across the resistor. A current drawn by the vibrotactile actuator varies according to a load applied to the vibrotactile actuator and passes through the resistor. The processor is configured to receive voltage drop measurement data from the voltage sensor, detect a load applied to the vibrotactile actuator based on the measured voltage drop, and control the driving signal based on the detected load.

The present invention provides a vibration audio system for transmitting an audio signal outputted from a sound source to a listener in the form of vibration while reducing output level of the signal and power consumption. The system includes an envelope detection unit (204) for detecting an envelope signal of the audio signal outputted from a sound source, a vibration transmission member for allowing the listener to perceive vibration of a low-frequency sound outputted from a low-frequency output speaker that outputs audio signals, and a frequency conversion unit (205) for generating an audio signal frequency-converted on the basis of resonant frequencies by multiplying the envelope signal by sine waves having the same frequencies as resonance frequencies obtained from an impulse response of the low-frequency output speaker disposed in the vibration transmission member. The audio signal frequency-converted by the frequency conversion unit (205) is outputted from the low-frequency output speaker.

Systems, methods, and apparatuses disclosed herein can generate vibrations in relation to, for example, synchronous with, audio that is associated with an event being hosted at a venue. These systems, methods, and apparatuses can generate the vibrations at the one or more frequencies over the one or more intervals in time to provide physical sensations to an audience within the venue as the audience is viewing the event. These physical sensations can provide new immersive experiences to the audience as the audience is viewing the event. These systems, methods, and apparatuses can be mechanically coupled, for example, attached, to seats within the venue. The vibrations generated by these systems, methods, and apparatuses can propagate through the seats onto the audience to provide the new immersive experiences to the audience as the audience is viewing the event. These systems, methods, and apparatuses can be attached to the seats at the start of the event and can thereafter be de-attached, or removed, from the seats at the conclusion of the event.