A harmonica including at least a comb including a plurality of chambers, a first plate including a plurality of blow reeds, a second plate including a plurality of draw reeds, the harmonica wherein each chamber of the plurality of chambers includes at least one material projection, each material projection being configured to reduce the oscillatory space of a draw reed, and in that it includes at least one additional plate arranged above the first plate and including a plurality of additional material projections, each additional material projection of the plurality of additional material projections being configured to reduce the oscillatory space of a blow reed.

A harmonica including at least a comb including a plurality of chambers, a first plate including a plurality of blow reeds, a second plate including a plurality of draw reeds, the harmonica wherein each chamber of the plurality of chambers includes at least one material projection, each material projection being configured to reduce the oscillatory space of a draw reed, and in that it includes at least one additional plate arranged above the first plate and including a plurality of additional material projections, each additional material projection of the plurality of additional material projections being configured to reduce the oscillatory space of a blow reed.

The present invention discloses a harmonica reed plate and a harmonica, and belongs to the field of musical instruments. The harmonica reed plate has different thicknesses by controlling reed slots. Specifically, a groove with fixed depth is milled on the opposite surface of the target reed slot for fixing the reeds so that the reeds obtain an optimal vibration thickness different from the thickness of the original material after fixation to customize an equivalent reed plate thickness for each reed slot (reed) without the need to select a compromised thickness to take into account all the reed slots like the traditional harmonica reed plate. The harmonica prepared by the above harmonica reed plate can realize the optimal vibration mode of bass and treble at the same time on one reed plate, and can control the deviation of timbre, volume and pitch, which is more conducive to playing.

The present invention discloses a harmonica reed plate and a harmonica, and belongs to the field of musical instruments. The harmonica reed plate has different thicknesses by controlling reed slots. Specifically, a groove with fixed depth is milled on the opposite surface of the target reed slot for fixing the reeds so that the reeds obtain an optimal vibration thickness different from the thickness of the original material after fixation to customize an equivalent reed plate thickness for each reed slot (reed) without the need to select a compromised thickness to take into account all the reed slots like the traditional harmonica reed plate. The harmonica prepared by the above harmonica reed plate can realize the optimal vibration mode of bass and treble at the same time on one reed plate, and can control the deviation of timbre, volume and pitch, which is more conducive to playing.

A displacement amount detecting apparatus is provided and includes: transmission member, transmitting a displacement on one end side thereof to a displacement on the other end side thereof; a sensor, disposed to face the other end side of the transmission member, and configured to output a value according to a distance between the sensor and the other end side of the transmission member; a calculation device, calculating a value for indicating the distance based on the value output by the sensor and a reference value; and a correction device, correcting the reference value. When the one end side is displaced in a first direction, the other end side is displaced in a second direction opposite to the first direction and away from the sensor. The correction) device is configured to correct the reference value based on the value for indicating the distance calculated by the calculation device.

An attachment for a smart device having a touch screen displaying at least one interactive area thereon includes at least one port defining an air passageway therethrough and at least one actuator element disposed at least partially within the air passageway of each of the at least one ports. Each of the at least one actuator elements is configured to actuate upon a flow of air passing through the corresponding air passageway. Actuation of each of the at least one actuator elements causes an electrical interaction with one of the interactive areas of the touch screen.

An attachment for a smart device having a touch screen displaying at least one interactive area thereon includes at least one port defining an air passageway therethrough and at least one actuator element disposed at least partially within the air passageway of each of the at least one ports. Each of the at least one actuator elements is configured to actuate upon a flow of air passing through the corresponding air passageway. Actuation of each of the at least one actuator elements causes an electrical interaction with one of the interactive areas of the touch screen.

The invention relates to improvements to harmonica holders, designed to allow a musician to play a harmonica and another instrument at the same time. The inventor's control arm and extender tubes allow a musician to adjust the position of a harmonica (in the horizontal and vertical plains) to their personal preference. After adjustment, the control arm allows a musician to quickly raise a harmonica up to their preferred position, which locks a harmonic in place and eliminates the need to re-set it each time it is used. To unlock a harmonica and drop it completely out of the way for singing or to remove it from their head area, they would simply tap the end of the control arm up, to disengage it. The neck support is also adjustable for best fit, while a pull down loop (attached to a harmonica cross member) allows a musician to quickly change harmonicas.

The invention relates to improvements to harmonica holders, designed to allow a musician to play a harmonica and another instrument at the same time. The inventor's control arm and extender tubes allow a musician to adjust the position of a harmonica (in the horizontal and vertical plains) to their personal preference. After adjustment, the control arm allows a musician to quickly raise a harmonica up to their preferred position, which locks a harmonic in place and eliminates the need to re-set it each time it is used. To unlock a harmonica and drop it completely out of the way for singing or to remove it from their head area, they would simply tap the end of the control arm up, to disengage it. The neck support is also adjustable for best fit, while a pull down loop (attached to a harmonica cross member) allows a musician to quickly change harmonicas.

A wind instrument such as a harmonica has a mouthpiece with one or more air channels, an electric power source, and a means for generating an electrical output signal from strain gages exposed to airflow in the channels. First and second strain gages having variable flow-induced resistance are bonded to a flexible substrate and suspended within an air channel, which includes a divider shelf for directing a first airflow to the first strain gage and a second airflow to the second strain gage. Complimentary strain gages are mounted to an opposite side of the substrate for inverse flexure to enable temperature correction for the first and second strain gages. When a user forces air through a channel in a direction biased to one side of the divider shelf a difference signal is generated by the first and second strain gages and detected by comparing their outputs. The difference signal can be used to adjust a variable control signal in applications such as volume control, dimming lights, or bending notes generated by the harmonica.