69results about How to "Prevent sound leakage" patented technology

The present invention discloses an earphone testing device. An earphone testing device provided by the embodiments of the present invention comprises an fixation base, a standard microphone attached to the fixation base, and a fixation scaffold for attaching and fixing the fixation base and the standard microphone; the fixation base is supported and fixed on the fixation scaffold by several supporting elements; a sealer is located on the position on the fixation base in contact with the outer shell of an earphone, the sealer forms an earphone storage portion for placing the earphone; a sealer is located on the position on the fixation base in contact with the outer shell of the standard microphone, the sealer forms a microphone attachment portion for attaching to the standard microphone; the earphone placed in the earphone storage portion and the standard microphone attached onto the microphone attachment portion are communicated with each other in the fixation base. The present invention provides a stable and highly precise testing solution of earphone, which can guarantee the precision and stability of earphone testing.

A breathing biofeedback device, having a microphone configured to acquire sounds of a user's breathing; a controller communicatively connected with the microphone, the controller processing the signals acquired by the microphone to produce an output signal, the controller processing the signal whereby the microphone signal is first pre-amplified to a voltage level that can be processed by an audio envelope detector circuit, the envelope detector signal is then fed into the analog-to-digital converter input of the controller allowing it to constantly sample the input volume level, the controller then controlling the output volume level fed to the headphones utilizing a digitally controlled variable-gain amplifier, wherein the output signal is not modified in any manner from the original input, except in volume; and a pair of earphones connected with the controller and configured to convey the output signal to the user.

The object is to provide a bone-conduction handset, which has its main body (1) sufficiently isolated from a bone-conduction speaker unit (3) so that: the chances that howling and sound leaking may occur are reduced; and, the handset is improved in easiness in use. In the handset, the speaker unit (3) is mounted on the main body (1) through a speaker mounting member (2) made of a vibration-proof material. The mounting member (2) is characterized by comprising a connection portion (6), which is disposed perpendicularly to both the handset body (1) and the speaker unit (3) in a manner such that the main body (1) and the speaker unit (3) have their opposed inner surfaces disposed adjacent to opposite sides of the connection portion (6), whereby the main body (1) is isolated from the speaker unit (3).

Embodiments of the present disclosure relate to an organic light emitting display device which directly vibrates an organic light emitting display panel to generate sound, and includes: an organic light emitting display panel including a light emitting layer including an organic light emitting material layer and an encapsulation layer disposed at one side of the light emitting layer; and a sound generating actuator in direct contact with the organic light emitting display panel to vibrate the organic light emitting display panel to generate sound. Especially, the organic light emitting display panel is a bottom emission type device, and thus can prevent generation of a weighted color mixing phenomenon in a wide viewing angle at the time of panel vibration and reduce the thickness or weight of the panel to thereby enhance the sound generation characteristic.

Problem: To provide a bone conduction speaker unit which can sufficiently prevent generation of sound leakage at the time of non-calling, and can be easily incorporated in a main body casing of mobile phones, and the like.Solution: A bone conduction speaker unit, being configured by incorporating a bone conduction speaker main body 2 in a housing 1, wherein an elastic plate 21 is fixed on a top face of a plate yoke 17 of the bone conduction speaker main body 2; an elastic base 22 is disposed on a rear face of a yoke 11; and an elastic cover 3 for holding a contact 5 which, upon a pressing force having been applied thereto in use, is abutted against the plate yoke 17 through the elastic plate 21 is loaded on the housing 1 with a gap “a” being held between a bottom face of the contact 5 and a top face of the elastic plate 21.

A speaker system has a laterally extending body portion for supporting the back of the head of a user and a pair of right and left side portions respectively connected to the right and left ends of the body portion. A plurality of openings in side wall of each of two speaker boxes for making communication between the inside and the outside of each speaker box, for preventing sound leakage from each speaker unit and ensuring the sound pressure level in a low-frequency range of the audio frequencies reproducible by the speaker unit.

Embodiments of the present disclosure relate to an organic light emitting display device which directly vibrates an organic light emitting display panel to generate sound, and includes: an organic light emitting display panel including a light emitting layer including an organic light emitting material layer and an encapsulation layer disposed at one side of the light emitting layer; and a sound generating actuator in direct contact with the organic light emitting display panel to vibrate the organic light emitting display panel to generate sound. Especially, the organic light emitting display panel is a bottom emission type device, and thus can prevent generation of a weighted color mixing phenomenon in a wide viewing angle at the time of panel vibration and reduce the thickness or weight of the panel to thereby enhance the sound generation characteristic.

An ear plug to be inserted into the external auditory canal, having a compressible sleeve member and a core member attached therein, the improvement in which plural projections or a single projection are formed intermittently or continuously on an exterior of the core member, and vent is formed through or along the projection to make the external auditory canal communicate with the external atmosphere when inserted into the external auditory canal. A communicating passage or vent to an effective degree for remarkably decreasing the pressure difference between the inside of the external auditory canal and the external atmosphere as well as preventing leakage of sound causing so-called howling.

An insert earphone which prevents a sound leakage and improves wearing comfort. An ear chip has a barrel portion and first and second annular flange portions having the shape of a parabola spreading from the top toward the middle and from the middle toward the base of the barrel portion respectively. The first annular flange portion has a smaller outer diameter than the second annular flange portion. The first annular flange portion has almost even thickness from the inner circumference to the outer circumference, and has the inner circumference neighborhood substantially formed in the shape of a sliced doughnut.

Disclosed herein is a speaker system including: a laterally extending body portion for supporting the back of the head of a user; and a pair of right and left side portions respectively connected to the right and left ends of the body portion.

The present invention includes a variable directional capacitor microphone in which two capacitor elements are combined. Each of the capacitor elements includes a vibrating plate and a fixed electrode, and an acoustic resistance can be adjusted in the state that the microphone has been assembled. The variable directional capacitor microphone of this invention includes capacitor elements 10a, 10b. In each of the capacitor elements 10a, 10b, each of vibrating plate supporting members 12a, 12b, each of spacer rings 13a, 13b, each of fixed electrodes 14a, 14b having through holes 141 and each of pedestals 15a, 15b having a through hole in each center of the pedestals are assembled in this order, respectively, in each of ring-shaped cases 16a, 16b. Each of vibrating plates 11a, 11b is strained and fixed on each of vibrating plate supporting members 12a, 12b, respectively. The capacitor elements 10a, 10b are combined through a connecting ring 22 having female screw threads 221 with the pedestal 15a, 15b facing back-to-back. An elastic acoustic resisting member 31 is disposed between the pedestals 15a, 15b. The acoustic resistance of the acoustic resisting member 31 can be adjusted with the lengths of thread engagement of the pedestals 15a, 15b with the connecting ring 22.

The invention relates to a soft support bridge type silicon micro-piezoelectric microphone chip which comprises a silicon substrate with a square conical hole which is small at the top and big at thebottom, a square compound vibration membrane which consists of a first silicon nitride membrane layer, a silicon dioxide membrane layer and a second silicon nitride membrane layer is covered on the front surface of the silicon substrate, and a third silicon nitride membrane layer and a fourth silicon nitride membrane layer are sequentially covered on the back surface of the silicon substrate; thethird and the fourth silicon nitride membrane layers both have central square holes; one pair of opposite sides of the vibration membrane respectively etch a vertical narrow slot penetrating the vibration membrane, and the vertical projection of each narrow slot is positioned on the inner side of the edge of the square hole in the front surface of the silicon substrate; a lower electrode, a piezoelectric membrane and an upper electrode are sequentially deposited on the vibration membrane; a polyimide membrane is deposited on various parts on the front surface of the silicon substrate; the compound vibration membrane which is etched with the vertical narrow slots and the polyimide membrane commonly constitute a soft support anti-sound leakage bridge type vibration membrane; two sides of thevibration membrane are fixedly supported, and strain can be produced during the vibration process; in order to prevent the microphone from producing sound leakage through the narrow slots, the soft polyimide membrane is deposited on the narrow slots, thereby being capable of effectively preventing sound leakage phenomenon.

A trim panel assembly and a method of manufacture. The trim panel assembly includes a trim panel and a backplate. The trim panel includes a speaker grill that allows sound to transmit from a speaker into the interior of a vehicle. The backplate is attached to the trim panel and includes a speaker mounting portion located adjacent to the speaker grill and a seal located adjacent to the speaker mounting portion that is configured to inhibit sound leakage.

An ear plug to be inserted into the external auditory canal, having a compressible sleeve member and a core member attached therein, the improvement in which plural projections or a single projection are formed intermittently or continuously on an exterior of the core member, and vent is formed through or along the projection to make the external auditory canal communicate with the external atmosphere when inserted into the external auditory canal. A communicating passage or vent to an effective degree for remarkably decreasing the pressure difference between the inside of the external auditory canal and the external atmosphere as well as preventing leakage of sound causing so-called howling.

A volume adjusting apparatus includes a sound collecting unit configured to collect noise data of a surrounding environment, an analyzing unit configured to extract a feature value indicating a feature of the noise data collected by the sound collecting unit and a feature value indicating a feature of supplied musical tune data, and a control unit configured to generate volume adjustment information for adjusting playback volume of the musical tune data based on the feature value of the noise data and the feature value of the musical tune data and adjusts the playback volume of the musical tune data based on the volume adjustment information.

The invention provides an in-ear earphone, and belongs to the technical field of earphones. The problems of poor low-frequency reproducibility, poor sealing performance and more serious sound leakage of a conventional in-ear earphone are solved. The in-ear earphone comprises earphone bodies, wherein each earphone body comprises a main shell with an accommodation cavity and a loudspeaker arranged in the main shell; a front cover is arranged at the front end of each main shell; a sound guide tube axially extends from the middle part of each front cover; the front end of each loudspeaker is in sealing connection with the inner wall of the corresponding front cover; the inner wall of each front cover is gradually reduced from the rear end to the front end; a bucket-shaped sound guide hole is formed in each front cover and the corresponding sound guide tube; a toning hole is vertically formed in the top of each main shell, and is positioned in the rear end of the corresponding loudspeaker; a net cover is arranged on each toning hole; the rear wall of each accommodation wall is parallel to the rear end face of the corresponding loudspeaker; the loudspeakers and the toning holes are perpendicular to the bucket-shaped sound guide holes. According to the in-ear earphone, the low-frequency reproducibility of the earphone is enhanced, ear canals of a user can be prevented from being completely isolated from the outside, potential threats are avoided, and the occurrence of a sound leakage phenomenon is prevented.