A pneumatic sounder and a control system thereof are disclosed. The pneumatic sounder comprises double magnets and a double-moving coil assembly. The double magnets comprise a first magnet and a second magnet, and the double-moving coil assembly comprises a first moving coil and a second moving coil. The first moving coil is disposed in a magnetic field of the first magnet, and the second moving coil is disposed in a magnetic field of the second magnet. The first moving coil and the second moving coil are connected to an electrical signal control system respectively, and a control system for the pneumatic sounder is also provided. The sounder greatly enhances adjustment efficiency of a cutting seam, reduces energy consumption for driving moving coils, guarantees services lives of the moving coils, and increases reliability of a system.

A pneumatic sounder and a control system thereof are disclosed. The pneumatic sounder comprises double magnets and a double-moving coil assembly. The double magnets comprise a first magnet and a second magnet, and the double-moving coil assembly comprises a first moving coil and a second moving coil. The first moving coil is disposed in a magnetic field of the first magnet, and the second moving coil is disposed in a magnetic field of the second magnet. The first moving coil and the second moving coil are connected to an electrical signal control system respectively, and a control system for the pneumatic sounder is also provided. The sounder greatly enhances adjustment efficiency of a cutting seam, reduces energy consumption for driving moving coils, guarantees services lives of the moving coils, and increases reliability of a system.

The present application generally discloses a digestive-safe noise making device for placement in a product, such as a toy. The digestive-safe noise making device includes a wall forming a body. The body has a passable structure allowing for the passage of digestive material if ingested by a user. Passable structures presented herein include one or more kinks as well as one or more apertures. The passable structure prevents the noise making device from blocking digestive processes when traveling through or lodged within a portion of the GI tract. At least a portion of the noise making device may be made from digestible material.

The present application generally discloses a digestive-safe noise making device for placement in a product, such as a toy. The digestive-safe noise making device includes a wall forming a body. The body has a passable structure allowing for the passage of digestive material if ingested by a user. Passable structures presented herein include one or more kinks as well as one or more apertures. The passable structure prevents the noise making device from blocking digestive processes when traveling through or lodged within a portion of the GI tract. At least a portion of the noise making device may be made from digestible material.

An electronic horn device may include a horn module, one or more amplifiers, and a controller operably connected to the horn module via the one or more amplifiers. The horn module may be mounted onboard a vehicle. The horn module includes plural compression drivers and a horn body. The horn body includes a bell segment and plural branch segments fluidly connected to the bell segment. The compression drivers are respectively mounted to respective ends of the branch segments of the horn body. The one or more amplifiers are operably connected to the compression drivers of the horn module. The controller is configured to control the compression drivers to generate a horn sound that is emitted from the bell segment of the horn body in response to receipt of a first control signal.

An electronic horn device may include a horn module, one or more amplifiers, and a controller operably connected to the horn module via the one or more amplifiers. The horn module may be mounted onboard a vehicle. The horn module includes plural compression drivers and a horn body. The horn body includes a bell segment and plural branch segments fluidly connected to the bell segment. The compression drivers are respectively mounted to respective ends of the branch segments of the horn body. The one or more amplifiers are operably connected to the compression drivers of the horn module. The controller is configured to control the compression drivers to generate a horn sound that is emitted from the bell segment of the horn body in response to receipt of a first control signal.

An apparatus, a system, and a method are disclosed for enhancing a sound of an engine having a turbocharger. The apparatus is used with a vehicle having a turbocharger that includes a recirculation hose that is disconnected from the system. A short section of hose is assembled to a blow-off valve and a sound modification apparatus that includes a horn end and an attachment portion. The attachment portion is connected to an outlet end of the short section of hose. The horn end has a conical end through which a first tone is emitted when vented gases pass inside the horn and a plurality of arcuate opening through which a second tone is emitted.

An apparatus, a system, and a method are disclosed for enhancing a sound of an engine having a turbocharger. The apparatus is used with a vehicle having a turbocharger that includes a recirculation hose that is disconnected from the system. A short section of hose is assembled to a blow-off valve and a sound modification apparatus that includes a horn end and an attachment portion. The attachment portion is connected to an outlet end of the short section of hose. The horn end has a conical end through which a first tone is emitted when vented gases pass inside the horn and a plurality of arcuate opening through which a second tone is emitted.

An apparatus includes a marine seismic source having a volume of gas and a gas reservoir, and the marine seismic source and the gas reservoir are coupled to permit a resonating gas flow to pass therebetween. The apparatus may be a component of a marine seismic survey system. The apparatus may be utilized in a method of marine seismic surveying.

An apparatus includes a marine seismic source having a volume of gas and a gas reservoir, and the marine seismic source and the gas reservoir are coupled to permit a resonating gas flow to pass therebetween. The apparatus may be a component of a marine seismic survey system. The apparatus may be utilized in a method of marine seismic surveying.