A sound path member covers a rear side of a bumper reinforcement for reinforcing a bumper of a vehicle and forms a sound path for a loudspeaker device between the sound path member and the bumper reinforcement. The sound path member is provided so that the sound path has a return portion. The loudspeaker device is arranged between the bumper reinforcement and the sound path member. Consequently, a sound radiated from a front side of the loudspeaker device is radiated through an opening of the bumper reinforcement, and a sound radiated from a rear side of the loudspeaker device passes through the sound path and is then radiated through an opening.

A sound path member covers a rear side of a bumper reinforcement for reinforcing a bumper of a vehicle and forms a sound path for a loudspeaker device between the sound path member and the bumper reinforcement. The sound path member is provided so that the sound path has a return portion. The loudspeaker device is arranged between the bumper reinforcement and the sound path member. Consequently, a sound radiated from a front side of the loudspeaker device is radiated through an opening of the bumper reinforcement, and a sound radiated from a rear side of the loudspeaker device passes through the sound path and is then radiated through an opening.

Methods, systems, and devices for disrupting phenomena are disclosed. An example device can comprise a transducer configured to receive a signal and output a longitudinal wave based on the signal. The example device can comprise a wave enhancer coupled to the transducer and configured to direct the longitudinal wave into a form having lower attenuation in a medium than the longitudinal wave as output from the transducer.

Methods, systems, and devices for disrupting phenomena are disclosed. An example device can comprise a transducer configured to receive a signal and output a longitudinal wave based on the signal. The example device can comprise a wave enhancer coupled to the transducer and configured to direct the longitudinal wave into a form having lower attenuation in a medium than the longitudinal wave as output from the transducer.

A piezoelectric sounding component includes a diaphragm, a case having a case body and a lid, and two pin terminals disposed on the lid such that the two pin terminals are in contact with the diaphragm. At least one of the pin terminals includes an extended portion, an extension portion, a rising portion, and a contact portion. A first fixing portion fixes the position of a first bent portion and a first guide portion that is in contact with a second bent portion and that guides posture of the pin terminal are on a surface of the lid that faces the interior space.

A speaker comprises a housing, a transducer residing inside the housing, and at least one sound guiding hole located on the housing. The transducer generates vibrations. The vibrations produce a sound wave inside the housing and cause a leaked sound wave spreading outside the housing from a portion of the housing. The at least one sound guiding hole guides the sound wave inside the housing through the at least one sound guiding hole to an outside of the housing. The guided sound wave interferes with the leaked sound wave in a target region. The interference at a specific frequency relates to a distance between the at least one sound guiding hole and the portion of the housing.

A speaker comprises a housing, a transducer residing inside the housing, and at least one sound guiding hole located on the housing. The transducer generates vibrations. The vibrations produce a sound wave inside the housing and cause a leaked sound wave spreading outside the housing from a portion of the housing. The at least one sound guiding hole guides the sound wave inside the housing through the at least one sound guiding hole to an outside of the housing. The guided sound wave interferes with the leaked sound wave in a target region. The interference at a specific frequency relates to a distance between the at least one sound guiding hole and the portion of the housing.

An ultrasonic device includes a substrate, a transmitter disposed over the substrate, the transmitter including an ultrasonic transmitting transducer configured to generate ultrasonic signals, and a receiver disposed over the substrate, the receiver including an ultrasonic receiving transducer configured to sense ultrasonic signals. The ultrasonic device further includes a first horn-shaped acoustic channel, wherein a material of at least one portion of the first horn-shaped acoustic channel is the same as a material of at least one portion of the transmitter or the receiver.

An ultrasonic device includes a substrate, a transmitter disposed over the substrate, the transmitter including an ultrasonic transmitting transducer configured to generate ultrasonic signals, and a receiver disposed over the substrate, the receiver including an ultrasonic receiving transducer configured to sense ultrasonic signals. The ultrasonic device further includes a first horn-shaped acoustic channel, wherein a material of at least one portion of the first horn-shaped acoustic channel is the same as a material of at least one portion of the transmitter or the receiver.

A speaker comprises a housing, a transducer residing inside the housing, and at least one sound guiding hole located on the housing. The transducer generates vibrations. The vibrations produce a sound wave inside the housing and cause a leaked sound wave spreading outside the housing from a portion of the housing. The at least one sound guiding hole guides the sound wave inside the housing through the at least one sound guiding hole to an outside of the housing. The guided sound wave interferes with the leaked sound wave in a target region. The interference at a specific frequency relates to a distance between the at least one sound guiding hole and the portion of the housing.