Earphone
AssigneesTsinghua University, Hon Hai Precision Industry Co., Ltd.
InventorsYang Wei, Shou-Shan Fan
Life of this patent
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Abstract
An earphone includes a loudspeaker, a signal process, an audio signal input port, and a driving port. The loudspeaker includes a thermoacoustic device disposed in a housing. The signal processor is electrically connected to the loudspeaker to provide signal to the loudspeaker. The audio input port is electrically connected to the signal processor to provide audio signal. The power supply device is electrically connected to the signal processor to provide driving current. The thermoacoustic device includes a substrate, and the substrate defines a plurality of grooves, a sound wave generator is suspended on the plurality of grooves.
Claims18
An earphone comprising:
- a thermoacoustic device comprising a substrate comprising a first surface defining a plurality of grooves, a second surface opposite to the first surface, and a sound wave generator on the first surface, and the sound wave generator being partially suspended over the plurality of grooves;
- a loudspeaker comprising a housing configured to accommodate the thermoacoustic device;
- a signal processor electrically connected to the loudspeaker and configured to provide signals to the loudspeaker;
- and
- a driving port electrically connected to the signal processor and configured to provide driving signals and audio signals.
Dependencies are inferred from the claim text.