14 results about "Electrodynamic loudspeaker" patented technology

Magnet assembly with axially magnetized magnetic rings, motor for electrodynamic loudspeaker comprising it, and associated electrodynamic loudspeaker The present invention relates to a magnet assembly (1) for an electrodynamic loudspeaker motor, comprising a first outer pair of axially magnetized magnetic rings (2, 3) and a second inner pair of axially magnetized magnetic rings (4, 5), each outer magnetic ring (2, 3) consisting of a plurality of identical axially magnetized outer permanent magnets (2a, 3a) arranged in a circle, the outer permanent magnets (2a, 3a) having either a cylindrical shape or a rectangular parallelepiped shape, the magnet assembly (1) further comprising outer steel rings (6, 7), inner steel rings (8, 9), an external separator (10) arranged between the outer steel rings (6,7) and an internal separator (11) arranged between the internal steel rings (8, 9). Figure to be published with the abstract: Figure 4,

The invention relates to an electrodynamic loudspeaker (10) comprising a device (22) for suspending a diaphragm (20) and a coil (18), which device can be translated along a longitudinal axis (Z) and which comprises: - a peripheral suspension (44) extending radially relative to the longitudinal axis (Z) between a proximal edge (50) and a distal edge (52) linked to an outer frame (12) of the loudspeaker; - an intermediate connection device (46) between the outer frame (12) and the diaphragm (20) along the longitudinal axis (Z), and extending along said axis between a lower base (54) to which is attached the proximal edge (50), and an upper base (56), and radially relative to said axis, between an inner circumference (58) rigidly connected to the coil (18), and an outer circumference (60) rigidly connected to the diaphragm (20); and - an inner suspension (48) extending radially relative to the longitudinal axis (Z) between a proximal contour (72) attached to an inner frame (74) rigidly connected to the outer frame (12), and a distal contour (70) attached to the upper base (56).

The utility model relates to an electrodynamic loudspeaker, which comprises a cone frame, a cone arranged on the inner side of the cone frame, a magnetic circuit assembly arranged at the bottom of the cone frame, a guide cylinder connected with the bottom of the cone, a voice coil wound outside the guide cylinder, and a dust cover arranged on the cone and positioned above the guide cylinder, the periphery of the guide cylinder is coaxially sleeved with an annular elastic centering disk, and the centering disk is fixedly connected with the inner wall of the basin stand through the outer edge of the centering disk to form a radial suspension structure. Two conductive leads are led out of the voice coil, the two conductive leads are bonded and fixed on the upper surface of the centering support chip through glue, and the conductive leads extend to the outside of the basin frame through the outer edge of the centering support chip and form electrical connection terminals. According to the utility model, the conductive lead is firmly bonded on the centering disk through the adhesive, thereby avoiding the problem of lead loosening or fracture caused by vibration, and improving the electrical connection reliability of the whole loudspeaker system.

The present invention relates to an acoustic loading device for an electrodynamic loudspeaker, enabling the control of unwanted displacements of the sound cone, resulting in low distortion for good acoustic efficiency. According to the device, the loudspeaker (0) is mounted in a sealed enclosure (10), the assembly forming the acoustic enclosure. The loudspeaker (0) is provided with an internal flat ring (CP), positioned approximately at mid-height of the sound cone (1), forming a small variable active loading volume (CA) in the upper, unperforated portion of the basket (2F). The lower portion of the basket (2A) is perforated, allowing the passage of sound waves to the acoustic suspension volume (VA) formed by the sealed enclosure (10). The flat ring (CP) is characterized by its central opening (D), the diameter of which allows the passage and linear displacement, forward (AV) or backward (AR), of the sound cone (1), forming an internal variable-opening vent (OV).Figure for the abridged version: Fig. 1.

A magnet assembly for an electrodynamic loudspeaker driver, comprising a first outer pair of axially magnetized, permanent ring magnets, having a first thickness and a second inner pair of axially magnetized, permanent ring magnets, having a second thickness less than the first thickness, the face of the first inner magnet facing the second inner magnet being offset by a predefined offset distance (Δy) relative to the face of the first outer magnet facing the second outer magnet, and the face of the second inner magnet facing the first inner magnet being offset by the predefined offset distance (Δy) relative to the face of the second outer magnet facing the first outer magnet.

The present invention discloses an electric loudspeaker parameter testing system, which is characterized in that it includes a control host, a dynamic signal acquisition card, a current sensor and a voltage sensor. After the transducer is connected to the electric loudspeaker, the current sensor and the voltage sensor respectively record the current signal and the voltage signal between the transducer terminals. After the control host collects the current signal and the voltage signal via the dynamic signal acquisition card, an electrical impedance curve is obtained, and a relationship between the electrical impedance curve and the magnetic circuit force factor BL is established. The relationship is fitted with multiple parameters to obtain the value of the magnetic circuit force factor BL and derive the related small signal parameters. The present invention has the advantages of high signal-to-noise ratio, low cost, strong adaptability, high efficiency and convenience. The present invention can be used for parameter measurement and quality control in laboratory research and development and batch production on production lines.

The utility model relates to a belt type earphone loudspeaker, belongs to the loudspeaker technical field, and specifically refers to a press-fitting belt type earphone loudspeaker comprising a pair of bench covers, one side of each bench cover is fixedly provided with a fixed bench, and each bench cover and the corresponding fixed bench are in threaded connection with a plurality of fixing bolts; an aluminum strip is fixedly installed in the middle of the fixing table, a pair of pressing strips is fixedly installed on one side of the fixing table through fixing bolts, and copper foil is jointly bonded between the pressing strips and the aluminum strip. According to the utility model, the effects of reducing faults such as poor contact and the like and improving the drivability and audio characteristics of the aluminum strip earphone are achieved, the problem that the audio playing effect is realized through the arranged vibrating diaphragm assembly and voice coil in the prior art is solved, and the earphone is similar to a transmission electrodynamic loudspeaker. A voice coil and a vibrating diaphragm are separately arranged, so that the earphone is relatively heavy in overall weight and relatively large in size, and is not beneficial to long-time wearing and use.

A motor for an electrodynamic loudspeaker and an electrodynamic loudspeaker including the motor. The motor includes a magnetic circuit assembly arranged about a motor axis. The motor includes: a magnetically permeable top plate, a magnetically permeable bottom plate, a magnetically permeable member disposed between, and magnetically coupled to, the magnetically permeable top and bottom plates, a center pole piece and an air gap for receipt of a voice coil. The motor also includes an outwardly projecting magnetically permeable member, or hat, arranged above a top of the air gap. The center pole piece includes a permanent magnet, such as a Neodymium magnet or a Ferrite magnet, extending axially from at least the bottom of the air gap to a magnetically permeable bottom member or to the magnetically permeable bottom plate.

Aspects of the present invention relate to a control system (100) for a vehicle (400). The control system (100) 5 comprises one or more processors (120) collectively configured to receive a signal (145) indicative of a change in a power consumption level at which one or more electrodynamic speakers (310), (320) of an audio system (300) of the vehicle (400) is to be operated, wherein the change is from a first power consumption level to a second power consumption level lower than the first level. The one or more processors (120) are collectively configured to determine, in dependence on the received signal (145), a mode of operation of one or more 10 haptic modules (200) disposed in one or more seating assemblies (210) of the vehicle (400) and to output a signal (155) to control the one or more haptic modules (200) to implement the determined mode. The output of the one or more haptic modules (200) operating in the determined mode provides one or more vibrational effects and the output of the one or more electrodynamic speakers (310), (320) operating at the lower power consumption level provides an audio effect. The determined mode of operation of the one or more haptic 15 modules (200) provides a combination of the audio effect and the one or more vibrational effects that is associated with a higher audio quality than an audio quality associated with the audio effect.

A true wireless device is provided. The true wireless device includes a modulator for generating ultrasonic waves and a MEMS speaker coupled to the modulator. The MEMS speaker provides greater bandwidth than traditional speakers such as electrodynamic speakers and piezoelectric thin-film speakers. In particular, the MEMS speaker has an audio frequency band and an ultrasonic frequency band.

The invention discloses an electrodynamic loudspeaker, and belongs to the technical field of loudspeakers, the electrodynamic loudspeaker comprises a basin stand installed on a broadcasting device and a skeleton installed on the basin stand, the skeleton is sleeved with a voice coil, a damper is installed between the basin stand and the skeleton, a T-shaped iron is installed below the skeleton in an embedded manner, and the T-shaped iron is connected with the voice coil. The T-shaped iron is sleeved with magnetic steel, a washer is installed between the magnetic steel and the basin frame, and the washer is sleeved with the voice coil. A paper cone is arranged on the framework, and a dustproof cover is embedded in the center of the paper cone; a lower heat dissipation channel and an upper heat dissipation channel are formed in the framework, the diameter of the upper heat dissipation channel is smaller than that of the lower heat dissipation channel, and a heat dissipation mechanism communicated with the upper heat dissipation channel to assist heat dissipation is arranged on the dustproof cover; through the heat dissipation mechanism, heat in the loudspeaker can be effectively assisted to be discharged outwards, the rigidity of the framework in a high-temperature state can be enhanced, secondary resonance caused by deformation of the framework is avoided, and the tone quality effect of the loudspeaker is improved.

Electrodynamic loudspeaker comprising a damping ring. The electrodynamic loudspeaker (10) comprises: - a fixed chassis (12); - a motor (13) having a fixed base (14) connected to the fixed chassis (12) and an assembly (16) movable axially relative to the fixed base (14) along an axis of the loudspeaker (AA'); - a convex diaphragm (18); - a lattice (20) connecting the convex diaphragm (18) and the movable assembly (16). A peripheral edge (44) of the convex diaphragm (18) is mounted on the lattice (20), and the electrodynamic loudspeaker (10) further comprises a damping ring (70) connecting an internal radial portion (73) of the convex diaphragm (18) and the lattice (20). Figure for the abbreviation: Figure 1

Procedure with the following steps: when an audio input signal is applied to a coil (20) of a loudspeaker (1), detecting a current flowing through the coil (20) of the loudspeaker (1) and / or a voltage across the coil (20) of the loudspeaker (1); Estimating the diaphragm excursion of the loudspeaker (1) from an analysis of a low-frequency (LF) component of the audio input signal and using an adaptive digital model (610) of the loudspeaker (1), wherein the detected voltage and / or detected current is fed to the adaptive digital model (610); and if a value of the estimated membrane stroke exceeds a predetermined threshold: Modifying the low-frequency (LF) component of the audio input signal to provide a modified low-frequency (LF) component of the audio input signal; and Combining the modified low-frequency (LF) component of the audio input signal with a high-frequency (HF) component of the audio input signal to provide a combined signal; and Output of the combined signal to the loudspeaker (1).

The electrodynamic loudspeaker (10) comprises: - a fixed frame (12); - a motor (13) comprising a fixed base (14) connected to the fixed frame (12) and a moving assembly (16) which is axially movable relative to the fixed base (14) along an axis (A-A') of the loudspeaker; - a convex diaphragm (18); - a lattice (20) connecting the convex diaphragm (18) and the moving assembly (16). A peripheral edge (44) of the convex diaphragm (18) is mounted on the lattice (20) and the electrodynamic loudspeaker (10) further comprises a damping ring (70) connecting an inner radial portion (73) of the convex diaphragm (18) and the lattice (20).