An upper plate and a similarly configured lower plate each have a serpentine forward edge, a linear rearward edge, a left edge, a right edge, an upper surface, and a lower surface. The upper and lower plates each have a whistle section and a laterally spaced bottle-opener section. A C-shaped bend couples the upper and lower plates. An upper hole extends through the upper plate in the whistle section. An axially aligned lower hole extends through the lower plate in the whistle section. A J-shaped notch extends through the upper plate and the lower plate and the C-shaped bend at the rearward edge in the bottle-opener section.

Apparatus, systems, and methods for providing transmission and localized reception of data, aural, visual, and tactile signaling are taught for a myriad of useful purposes, including embodiments that permit differentiation between selected groups of intended recipients to permit simultaneous use of multiple instances of this technology in close proximity, if desired.

Apparatus, systems, and methods for providing transmission and localized reception of audio, visual, and tactile signaling are taught for a myriad of useful purposes, including embodiments that permit differentiation between selected groups of intended recipients to permit simultaneous use of multiple instances of this technology in close proximity, if desired.

A musical instrument is disclosed. The musical instrument comprises a tubular body comprising a first mouthpiece and a bell for blowing air in and out of the tubular body. The musical instrument further comprises an orifice between the first mouthpiece and the bell. The orifice has a continuously curved longitudinal profile gradually opening up to an inlet side of the orifice from one of said first mouthpiece and the bell and to an outlet side of the orifice from one of the first mouthpiece and the bell. The musical instrument is adapted to be positioned between lips for blowing air.

A musical instrument is disclosed. The musical instrument comprises a tubular body comprising a first mouthpiece and a bell for blowing air in and out of the tubular body. The musical instrument further comprises an orifice between the first mouthpiece and the bell. The orifice has a continuously curved longitudinal profile gradually opening up to an inlet side of the orifice from one of said first mouthpiece and the bell and to an outlet side of the orifice from one of the first mouthpiece and the bell. The musical instrument is adapted to be positioned between lips for blowing air.

Disclosed technology allows a whistle to be magnetically detachable from a base portion, such as a finger grip. Some embodiments comprise a whistle component comprising a first magnetic member and a base component comprising a second magnetic member, such that the first and second magnetic members are magnetically attracted to each other. The whistle component can be detachable from the base component by breaking a magnetic bond between the first and second magnetic members. At least one of the first and second magnetic members can be at least partially covered by a non-magnetic material such that the non-magnetic material separates the first and second magnetic members when the whistle component is magnetically coupled to the base component. The first magnetic member can be contained within a cavity of an adaptor that is attached to the whistle, or within the whistle itself.

Disclosed technology allows a whistle to be magnetically detachable from a base portion, such as a finger grip. Some embodiments comprise a whistle component comprising a first magnetic member and a base component comprising a second magnetic member, such that the first and second magnetic members are magnetically attracted to each other. The whistle component can be detachable from the base component by breaking a magnetic bond between the first and second magnetic members. At least one of the first and second magnetic members can be at least partially covered by a non-magnetic material such that the non-magnetic material separates the first and second magnetic members when the whistle component is magnetically coupled to the base component. The first magnetic member can be contained within a cavity of an adaptor that is attached to the whistle, or within the whistle itself.

A system and method for providing network-enabled signaling devices for sporting events are disclosed. An example embodiment is configured for: detecting an event at a sporting activity by use of a signal generator with a data processor and a sensor subsystem, the event detection being triggered by a sensor of the sensor subsystem detecting a signal exceeding a pre-defined threshold; generating a signal message including information indicative of the event detection; establishing, by use of the data processor of the signal generator, a connection with a data network; sending the signal message to a message broker via the data network; and causing the message broker to forward the signal message to subscribed subscriber platforms.

A system and method for providing network-enabled signaling devices for sporting events are disclosed. An example embodiment is configured for: detecting an event at a sporting activity by use of a signal generator with a data processor and a sensor subsystem, the event detection being triggered by a sensor of the sensor subsystem detecting a signal exceeding a pre-defined threshold; generating a signal message including information indicative of the event detection; establishing, by use of the data processor of the signal generator, a connection with a data network; sending the signal message to a message broker via the data network; and causing the message broker to forward the signal message to subscribed subscriber platforms.

A whistle mouthpiece is provided that has a whistle mechanism that comprises one or more openings that may contain one or more reeds or other frequency producing mechanisms that produce the same or different resonant frequencies. The one or more openings may transversely cross the whistle mouthpiece in a parallel manner, or may alternatively exit the whistle mouthpiece at the front portion at a non-parallel location or at another location along the bottom or top of the mouthpiece.