Methods and systems are provided for enhancing and delivering engine sounds to a vehicle cabin based on a selected mode. In one example, a method may include adjusting openings of one or more valves fluidically coupling one or more corresponding engine regions to a sound tube of a sound enhancing system based on the selected mode. Throttle opening may also be adjusted to compensate for air routed from the engine regions to the sound tube instead of flowing to the engine cylinders.

Methods and systems are provided for enhancing and delivering engine sounds to a vehicle cabin based on a selected mode. In one example, a method may include adjusting openings of one or more valves fluidically coupling one or more corresponding engine regions to a sound tube of a sound enhancing system based on the selected mode. Throttle opening may also be adjusted to compensate for air routed from the engine regions to the sound tube instead of flowing to the engine cylinders.

Sound diffuser accessory, suitable to be associated to a sound source, such as an electric or electronic or digital musical device or instrument and suitable to diffuse sounds or sound signals deriving from said sound source, wherein such accessory includes at least one sound board, and support structure for the sound board, wherein the sound board includes a board or panel having a flat or slightly curved shape and including a first exposed surface, a second surface, opposite to the first surface and a thickness (S), wherein the sound board includes or is connected with at least one transducer of the electromechanical and/or piezoelectric and/or piezoceramic and/or magnetodynamic and/or magnetostrictive type and wherein the support structure includes at least one element having a substantially strip-like shape and spacer means having a height (H2), suitable to constrain and space the at least one sound board and the support structure.

Sound diffuser accessory, suitable to be associated to a sound source, such as an electric or electronic or digital musical device or instrument and suitable to diffuse sounds or sound signals deriving from said sound source, wherein such accessory includes at least one sound board, and support structure for the sound board, wherein the sound board includes a board or panel having a flat or slightly curved shape and including a first exposed surface, a second surface, opposite to the first surface and a thickness (S), wherein the sound board includes or is connected with at least one transducer of the electromechanical and/or piezoelectric and/or piezoceramic and/or magnetodynamic and/or magnetostrictive type and wherein the support structure includes at least one element having a substantially strip-like shape and spacer means having a height (H2), suitable to constrain and space the at least one sound board and the support structure.

The present disclosure provides a vibration diaphragm. The vibration diaphragm includes a central dome part; and a suspension part surrounding the dome part. The suspension part has a protruding part and a fixation part extending outwards from the protruding part. The vibration diaphragm further includes a number of first reinforcing parts disposed on the suspension part; and a number of second reinforcing parts disposed on the suspension part. Each second reinforcing part surrounds an end of the first reinforcing part.

The present disclosure provides a vibration diaphragm. The vibration diaphragm includes a central dome part; and a suspension part surrounding the dome part. The suspension part has a protruding part and a fixation part extending outwards from the protruding part. The vibration diaphragm further includes a number of first reinforcing parts disposed on the suspension part; and a number of second reinforcing parts disposed on the suspension part. Each second reinforcing part surrounds an end of the first reinforcing part.

The present invention relates to an ultrasonic generator for repelling harmful animals. The invention comprises a columnar ultrasonic wave generating body 18 which has a piezoelectric element 16 and a connecting body 22 and a smaller-diameter connecting body 24 each having a reduced diameter, a diaphragm 28 which is in the form of a speaker horn, and a connecting rod 26 which extends from the ultrasonic wave generating body 18 and connects and fixes the diaphragm 28 to an end thereof. The thickness of the diaphragm 28 gradually decreases from the base 34 connected to the connecting rod 26 toward an outer edge of the diaphragm 28 and one or more undulated portions 36 are formed concentrically on the front face of the diaphragm.

The present invention relates to an ultrasonic generator for repelling harmful animals. The invention comprises a columnar ultrasonic wave generating body 18 which has a piezoelectric element 16 and a connecting body 22 and a smaller-diameter connecting body 24 each having a reduced diameter, a diaphragm 28 which is in the form of a speaker horn, and a connecting rod 26 which extends from the ultrasonic wave generating body 18 and connects and fixes the diaphragm 28 to an end thereof. The thickness of the diaphragm 28 gradually decreases from the base 34 connected to the connecting rod 26 toward an outer edge of the diaphragm 28 and one or more undulated portions 36 are formed concentrically on the front face of the diaphragm.

Aspects of the disclosure relate to using a display as a sound emitter and may relate to an electronic device including a display and for sound leak cancellation. A vibration sensor such as an accelerometer is physically coupled to the display and senses the display vibration to provide a signal representing actual acoustic output from the display. The electronic device includes a first actuator physically coupled to the display and configured to cause vibration of the display in response to a first audio signal. The electronic device further includes the vibration sensor configured to output a vibration sensor signal proportional to the vibration of the display. The electronic device further includes a second actuator physically coupled to a portion of the electronic device different from where the first actuator is physically coupled to the display and configured to cause vibration of the portion in response to a second audio signal.

Aspects of the disclosure relate to using a display as a sound emitter and may relate to an electronic device including a display. In particular a vibration sensor such as an accelerometer is physically coupled to the display and senses display vibration to provide a high accuracy feedback loop with respect to representing actual audio output from the display. The electronic device includes an actuator physically coupled to the display and configured to cause vibration of the display in response to an audio signal. The electronic device further includes a vibration sensor physically coupled to the display and configured to output a vibration sensor signal proportional to the vibration of the display due to the actuator.