In at least one embodiment, a loudspeaker assembly for a vehicle is provided. The assembly includes a diaphragm; a loudspeaker, and a carrier. The loudspeaker includes a first end for being positioned in a first area of the vehicle that is exposed to external ambient noise to the vehicle and a second end for being positioned in a second area of the vehicle that is exposed directly within an interior cabin of the vehicle to provide desired audio along a first axis to the interior cabin. The carrier is attached to the second end of the loudspeaker and includes noise absorption material to prevent the external ambient noise from entering into the vehicle. The carrier defines a plurality of openings positioned on an outer perimeter thereof to enable the desired audio to enter into the interior cabin along a second axis that is different than the first axis.

A speaker diaphragm includes a mixed layer. The mixed layer includes cellulose nanofibers, and polyparaphenylenebenzobisoxazole fibers. An average length of the polyparaphenylenebenzobisoxazole fibers is 0.5 mm or more and 4.0 mm or less.

A vibration plate having a reinforced structural element is provided. The vibration plate includes a vibration plate main body. The vibration main body has a first surface and a second surface opposite to each other. The reinforced structural element is located between the first surface and the second surface. A material of the vibration plate main body is different from a material of the reinforced structural element.

A non-dispensing manufacturing process includes forming a paper cone; engaging the paper cone with a voice coil to form a vibration assembly; fixing a yoke, a magnet set, and a washer to form a magnetic circuit assembly; engaging a basket with the magnetic circuit assembly; and engaging the basket with the vibration assembly to form a speaker, where no glue is used in the manufacturing process. A speaker includes a paper cone; a voice coil engaged with the paper cone to form a vibration assembly, where a junction between a bobbin of the voice coil and the paper cone has a first welding layer; a magnetic circuit assembly including a yoke, a magnet set, and a washer that are integrally fixed; and a basket engaged with the magnetic circuit assembly and the vibration assembly.

The invention relates to a new resonance sound generation flat speaker which comprises a wireless music vibration body, at least one resonance sounding board and resonance sounding cloth arranged in said wireless music vibration body; the first surface of said resonance sounding board is attached to a sound vibrator on said wireless music body, the second surface of said resonance sounding board is attached to the inner surface of said resonance sounding cloth; said resonance sounding cloth is combined with the outer frame of said wireless music body with the tensile force of 5 kg-20 kg. Said resonance sounding board is matched with different audio resonance points of said resonance sounding cloth to produce a full range flat speaker sounding device.

A speaker diaphragm structure is installed inside a sound generator device which comprises a frame, a speaker diaphragm structure installed within the frame and a suspension edge whose inner perimeter is connected to the speaker diaphragm structure and whose outer perimeter is connected to the frame; herein the speaker diaphragm structure includes a diaphragm body and a composite material layer, in which the composite material layer is used for bonding onto the surface of the diaphragm body or attaching within the diaphragm body; moreover, the composite material layer is composed of one or more types of tetrapyrrole compounds as well as one or more types of metal ions; additionally, the composite material layer has a thickness smaller than the thickness of the diaphragm body, and is mainly applied to provide the performance effect of sound quality modifications.

A display apparatus includes a display module including a display panel configured to display an image, a rear cover on a rear surface of the display module, and a sound generating module at the rear cover and configured to vibrate the display module to generate sound, and a rear surface of the sound generating module is covered by the rear cover.

A speaker diaphragm includes a plurality of highly rigid layers and a porous layer. Each of the plurality of highly rigid layers includes a first resin matrix, and wood fibers and highly rigid fibers dispersed in the first resin matrix. The porous layer includes a second resin matrix comprising independent pores, and fibers comprising wood fibers and highly rigid fibers dispersed in the second resin matrix. Both outermost layers are the highly rigid layers. A percentage content of the wood fibers in the highly rigid layers is 10% by mass or more and 65% by mass or less. A percentage content of the highly rigid fibers in the highly rigid layers is 5% by mass or more and 40% by mass or less. A percentage content of total fibers in the porous layer is 15% by mass or more and 40% by mass or less.

An audio amplified combustion system is described that has a fuel injector a positioned proximate to a speaker so that a flame moves in concert with audio emitted from the speaker. A projection column and projection top can be positioned above the cone of the speaker to define a volume for the combustion. Various apparatuses, methods, and systems for keeping the speaker cool are also described. Coating on various parts of the system to increase or decrease emissivity or absorptivity of various parts can keep the speaker cool. In addition, a control unit can cause the speaker to pant or vibrate at a low or high frequency to induce convective and keep the speaker cool. These and other features of the audio amplified combustion system are described herein.

A sound system is provided with a headphone that includes a transducer and at least one microphone. The sound system also includes an equalization filter and a loop filter circuit. The equalization filter is adapted to equalize an audio input signal based on at least one predetermined coefficient. The loop filter circuit includes a leaky integrator circuit that is adapted to generate a filtered audio signal based on the equalized audio input signal and a feedback signal indicative of sound received by the at least one microphone, and to provide the filtered audio signal to the transducer.