4926results about "Electrical transducers" patented technology

The invention discloses a sound production device and a sound production module, and relates to the technical field of electroacoustic transduction. The inner side of an inner folding ring of a first vibrating diaphragm assembly of the sound production device is connected with a magnetic circuit system, the outer periphery of an outer folding ring is connected with a shell, and a voice coil is connected with a first vibrating plate; the diaphragm and the second diaphragm assembly are sequentially arranged on the side, facing the voice coil, of the first diaphragm assembly and located on the outer side of the voice coil, the diaphragm is a flexible piece, the outer edges of the diaphragm and the second diaphragm assembly are both connected with the shell, and the inner edge of the diaphragm and the inner edge of the second diaphragm assembly are both connected with the first vibrating plate. A sound production cavity communicated with the sound outlet hole is formed between the diaphragm and the second vibrating diaphragm assembly; wherein a first rear cavity is defined between the first vibrating diaphragm assembly and the diaphragm, a second rear cavity is defined among the first vibrating diaphragm assembly, the second vibrating diaphragm assembly, the shell and the magnetic circuit system, and the first rear cavity is communicated with the second rear cavity. According to the sound production device, the effective vibration area of the vibration system is increased, and the acoustic performance is improved.

The utility model discloses a sound production device and a sound production module, the sound production device comprises a shell, a magnetic circuit system and a vibration system, and the shell is provided with a first sound outlet hole; the vibration system comprises a first vibrating diaphragm, a second vibrating diaphragm, a middle diaphragm and a voice coil, the first vibrating diaphragm is arranged on one side, far away from the magnetic circuit system, of the shell, the second vibrating diaphragm is arranged on one side, facing the magnetic circuit system, of the first vibrating diaphragm, and the middle diaphragm is arranged between the first vibrating diaphragm and the second vibrating diaphragm; the voice coil is at least partially arranged in the magnetic gap of the magnetic circuit system, and the middle diaphragm and the second diaphragm are located outside the voice coil; the outer edges of the second vibrating diaphragm and the middle diaphragm are connected with the shell, and the inner edges of the second vibrating diaphragm and the middle diaphragm are connected with the first vibrating plate of the first vibrating diaphragm; a second sound production cavity communicated with the first sound production hole is formed between the second vibrating diaphragm and the middle diaphragm; a first rear cavity is defined by the first vibrating diaphragm and the middle diaphragm, and a second rear cavity communicated with the first rear cavity is defined by the first vibrating diaphragm, the second vibrating diaphragm and the shell.

The utility model discloses a sound production device and a sound production module, the sound production device comprises a shell, a magnetic circuit system and a vibration system, and the shell is provided with an accommodating space; the magnetic circuit system is arranged in the accommodating space, the magnetic circuit system comprises a magnet yoke, an inner magnetic part and an edge magnetic part, the inner magnetic part and the edge magnetic part are arranged on the magnet yoke, the edge magnetic part is located on the outer side of the inner magnetic part, a magnetic gap is formed between the inner magnetic part and the edge magnetic part, and the edge magnetic part is provided with a notch; the vibration system comprises a voice coil, at least part of the voice coil is arranged in the magnetic gap, the voice coil is provided with a first protruding part formed by extending into the notch of the side magnetic part, the inner magnetic part is provided with a second protruding part, and the second protruding part and the first protruding part are correspondingly arranged.

The utility model discloses a sound production device, a sound production module and electronic equipment, the sound production device comprises a shell, a magnetic circuit system and a vibration system, the shell is provided with an accommodating space, and the shell is provided with a first sound outlet hole; the magnetic circuit system is arranged in the accommodating space and is provided with a magnetic gap; the vibration system comprises a first vibrating diaphragm, a second vibrating diaphragm, a middle diaphragm and a voice coil, the first vibrating diaphragm is arranged on one side, far away from the magnetic circuit system, of the shell, the second vibrating diaphragm is arranged on one side, facing the magnetic circuit system, of the first vibrating diaphragm, and the middle diaphragm is arranged between the first vibrating diaphragm and the second vibrating diaphragm; the voice coil is at least partially arranged in the magnetic gap, the voice coil is connected with the first diaphragm, and the second diaphragm and the middle diaphragm are located on the outer side of the voice coil; the outer edges of the second vibrating diaphragm and the middle diaphragm are connected with the shell, and the inner edges of the second vibrating diaphragm and the middle diaphragm are connected with the first vibrating diaphragm; and a closed second sound production cavity is formed between the second vibrating diaphragm and the middle diaphragm and is communicated with the first sound outlet hole.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, a vibrating diaphragm assembly of the sound production device comprises a first vibrating diaphragm, a second vibrating diaphragm and a vibrating plate, the first vibrating diaphragm and the second vibrating diaphragm are arranged at an interval along a first direction and are respectively connected with two ends of a voice coil along the first direction, and the vibrating plate is located at the inner side of the voice coil and is connected with the first direction. The vibrating plate has magnetic conductivity, an edge magnetic part of the magnetic circuit system is arranged between the first vibrating diaphragm and the second vibrating diaphragm and is located on the outer side of the voice coil, two center magnets of a center magnetic part are located on the two opposite sides of the vibrating plate, the two center magnets are magnetized in the first direction, and the magnetizing directions are opposite; the sounding device forms a first cavity and a second cavity on two sides of the vibrating plate, and is provided with a first sounding hole and a second sounding hole which are respectively communicated with the first cavity and the second cavity, and the two central magnets are respectively exposed in the first cavity and the second cavity. According to the sound production device, the BL value is effectively increased, the acoustic performance is improved, and the sound leakage problem of a far field can be reduced.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, a magnetic circuit system of the sound production device comprises a magnetic conductive yoke, and side magnetic parts, a common magnetic part and two central magnetic parts which are arranged on the magnetic conductive yoke, the side magnetic parts are annularly arranged to form an accommodating space, the common magnetic part is located in the accommodating space and is connected with the side magnetic parts, and the two central magnetic parts are arranged in the accommodating space. The magnetic circuit system is arranged in the containing space to divide the containing space into two installation spaces, each center magnetic part is located in one installation space, the center magnetic parts, the side magnetic parts and the common magnetic part are spaced to define a magnetic gap, the vibration system comprises a vibrating diaphragm assembly and two voice coils, the periphery of the vibrating diaphragm assembly is connected to the shell and is opposite to the magnetic circuit system, and the two voice coils are arranged side by side. One end of each voice coil is connected to the diaphragm assembly, and the other end of each voice coil is suspended in one magnetic gap. According to the sound production device, the size of the voice coil and the magnet volume of the magnetic circuit system are increased, so that the BL value is improved, and the whole machine performance and the sound effect loudness are improved.

The invention discloses a sound production device, a sound production module and electronic equipment, and relates to the technical field of electroacoustic transduction, a vibration plate of a vibration system of the sound production device comprises a first plate part and a second plate part which are located on different horizontal planes, the top of a voice coil is connected with the first plate part, and the second plate part is located on the inner side of the voice coil; a center magnetic part of the magnetic circuit system comprises a first center magnet and a second center magnet which are located on the two opposite sides of the second plate part, the first center magnet is close to the top of the voice coil, and the second center magnet is close to the bottom of the voice coil. The first center magnet and the second center magnet are magnetized in the first direction and are opposite in magnetizing direction, and the magnetic energy product of the first center magnet is larger than that of the second center magnet. According to the sound production device, the thinning design can be realized, the BL value is effectively improved, the magnetic lines are distributed more uniformly, the BLx curve is flatter, and thus the distortion is reduced.

The utility model relates to a treble and bass coaxial moving coil loudspeaker horn, which comprises a main body bracket, a front cover, a PCB (Printed Circuit Board), an outer ring horn and an inner ring horn, the main body bracket comprises a shell and an annular partition plate arranged in the shell; a first magnetic circuit cavity is formed between the annular partition plate and the shell; and a second magnetic circuit cavity is formed in the annular partition plate. The main body support is divided into the first magnetic circuit cavity and the second magnetic circuit cavity by arranging the annular partition plate, the outer ring loudspeaker is arranged in the first magnetic circuit cavity, the inner ring loudspeaker is arranged in the second magnetic circuit cavity, namely, the inner ring loudspeaker is arranged in the spare area in the center of the outer ring loudspeaker, and therefore coaxial arrangement of the tweeter and the woofer is achieved. Not only can segmented coverage of an audio frequency band be realized, but also the whole loudspeaker structure can be more compact, and the overall appearance size of the loudspeaker is greatly reduced.

The invention discloses a sound production device and a sound production module, and relates to the technical field of electroacoustic transduction, the inner side of an inner folding ring of a first vibrating diaphragm assembly of a vibration system of the sound production device is connected with a central magnetic part, and a diaphragm and a second vibrating diaphragm assembly are sequentially arranged on one side, facing a magnetic conductive yoke, of the first vibrating diaphragm assembly; the outer periphery of the folding ring part of the second vibrating diaphragm assembly is connected with the shell, the first bending part of the second vibrating plate is connected with the inner edge of the diaphragm, and the outer edge of the diaphragm is connected with the shell, so that a sound production cavity communicated with the sound outlet hole of the shell is formed between the diaphragm and the second vibrating diaphragm assembly; two ends of the rigid connecting piece are respectively connected with the second vibrating diaphragm assembly and the voice coil, so that the voice coil drives the second vibrating diaphragm assembly to vibrate through the rigid connecting piece; wherein the effective vibration area Sd1 of the diaphragm is smaller than the effective vibration area Sd2 of the second diaphragm assembly, and the ratio of the Sd1 to the Sd2 is 1: 1.5-1: 3. According to the sound production device, the effective vibration area of the vibration system is increased, and the acoustic performance is improved.

Disclosed in the present invention are a sound production apparatus, a sound production module, and an electronic device. The sound production apparatus comprises a magnetic circuit system, a conductive support, and a vibration system; the magnetic circuit system is provided with a magnetic gap and a mounting hole; the conductive support is provided in the mounting hole; the vibration system comprises a diaphragm assembly, a voice coil, and centering supports; the diaphragm assembly comprises a diaphragm, a frame, and a dome opposite to the magnetic circuit system; an inner annular hole is formed in the center of the diaphragm; the frame is provided in the inner annular hole and is connected to the diaphragm; the frame is provided with an assembling hole corresponding to the conductive support; the dome covers the assembling hole; one end of the voice coil is connected to the diaphragm or the frame, and the other end of the voice coil is suspended in the magnetic gap; and one end of each centering support is connected to the conductive support, and the other end of the centering support is connected to the frame and electrically connected to a lead of the voice coil. The sound production apparatus of the present invention has low magnetic flux leakage, and the sound production apparatus effectively improves the magnetic field strength and increases the BL value, thereby improving acoustic performance.

The invention discloses a sound production device and a sound production module, and relates to the technical field of electroacoustic transduction, a central magnetic part of a magnetic circuit system of the sound production device comprises a first central magnet, a central magnetic conductive plate and a second central magnet which are stacked, and the magnetizing directions of the first central magnet and the second central magnet are opposite; a receding space is formed between every two adjacent side magnetic parts, the inner side of an inner folding ring of a first vibrating diaphragm assembly of the vibrating system is connected with the center magnetic part, a diaphragm and a second vibrating diaphragm assembly are sequentially arranged on the side, facing the magnetic conductive yoke, of the first vibrating diaphragm assembly, and a sound production cavity communicated with a sound production hole of the shell is formed between the diaphragm and the second vibrating diaphragm assembly. The first extension part of the second diaphragm assembly is correspondingly connected with the second extension part of the diaphragm and extends to the avoiding space, the rigid connecting piece is arranged in the avoiding space, the rigid connecting part of the rigid connecting piece is connected with the first extension part, and the fourth extension part of the rigid connecting piece is connected with the voice coil. According to the sound production device, the effective vibration area of the vibration system is increased, and the acoustic performance is improved.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, the sound production device comprises a vibration system and a magnetic circuit system, the magnetic circuit system comprises a magnetic conductive yoke, a central magnetic part and an edge magnetic part, the edge magnetic part and the central magnetic part are spaced to form a magnetic gap, one end of a voice coil of the vibration system is suspended in the magnetic gap, and the other end of the voice coil is suspended in the magnetic gap. The central magnetic part comprises a middle magnetic assembly and a Halbach magnetic circuit arranged around the middle magnetic assembly. The Halbach magnetic circuit comprises a first magnet, a second magnet and a third magnet which are sequentially arranged on the magnetic conductive yoke in a stacked mode. Wherein the first magnet and the third magnet are both magnetized in the direction perpendicular to the vibration direction of the vibration system, the magnetizing direction of the first magnet is opposite to the magnetizing direction of the third magnet, and the second magnet is magnetized in the vibration direction of the vibration system. According to the sound production device, the central magnetic part of the magnetic circuit system is optimized, so that the magnetic induction lines are effectively gathered in the magnetic gap, the BL value is increased, the sensitivity of the sound production device is improved, and the sound effect of the whole machine is improved.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, a first magnetic gap is formed between an edge magnetic part of a magnetic circuit system of the sound production device and a magnetic conductive yoke, a second magnetic gap is formed between a central magnetic part and the magnetic conductive yoke, a support member is arranged on one side of the magnetic conductive yoke back to the central magnetic part, and the support member and the magnetic conductive yoke enclose to form an airflow cavity; the magnetic conductive yoke is provided with a first through hole communicated with the second magnetic gap and the airflow cavity, the supporting piece is provided with a second through hole communicated with the airflow cavity, a first vibrating diaphragm and a second vibrating diaphragm of the vibrating system are located on the two opposite sides of the magnetic circuit system, and the first vibrating diaphragm is provided with a third through hole communicated with the second through hole. The first voice coil and the second voice coil are arranged in the first magnetic gap and the second magnetic gap respectively, and sound waves of the first side of the second vibrating diaphragm and sound waves of the first side of the first vibrating diaphragm are radiated outwards on the same side of the sound production device together. According to the sound production device, the high-frequency performance is improved, and the vibration area of the vibration system is increased, so that the performance and the effect of the whole machine are improved.

The utility model discloses a sound production device and a sound production module, the sound production device comprises a shell, a magnetic circuit system and a vibration system, the shell is provided with a first sound outlet hole, and the shell comprises a first shell and a second shell; the magnetic circuit system is fixed on the second shell and is provided with a magnetic gap; the vibration system comprises a first vibrating diaphragm, a second vibrating diaphragm, a middle diaphragm and a voice coil, the first vibrating diaphragm is arranged on one side, far away from the magnetic circuit system, of the shell, and the outer edge of the first vibrating diaphragm is fixed on the first shell; the second vibrating diaphragm is arranged on one side, facing the magnetic circuit system, of the first vibrating diaphragm, and the outer edge of the second vibrating diaphragm is clamped between the first shell and the second shell; the middle diaphragm is arranged between the first vibrating diaphragm and the second vibrating diaphragm, and the outer edge of the middle diaphragm is connected with the first shell; the voice coil is at least partially arranged in the magnetic gap; the inner edges of the second vibrating diaphragm and the middle diaphragm are connected with the first vibrating diaphragm; and a closed second sound production cavity is formed between the second vibrating diaphragm and the middle diaphragm and is communicated with the first sound outlet hole.

The present invention relates to the technical field of electroacoustic transduction. Disclosed in the present invention are a sound production unit and an electronic device. The sound production unit comprises a housing and a magnetic circuit system, which is arranged in the housing and comprises a magnetically conductive yoke, a central magnetic portion and a side magnetic portion, wherein the central magnetic portion and the side magnetic portion are arranged on the magnetically conductive yoke, and the side magnetic portion is arranged on an outer side of the central magnetic portion; the central magnetic portion comprises central magnetic steel and a central magnetically conductive plate, with two opposite sides of the central magnetic steel being respectively connected to the central magnetically conductive plate and the magnetically conductive yoke; the side magnetic portion comprises side magnetic steel and a side magnetically conductive plate, with two opposite sides of the side magnetic steel being respectively connected to the side magnetically conductive plate and the magnetically conductive yoke; the central magnetically conductive plate and / or the side magnetically conductive plate are / is made of a cobalt alloy material; and the magnetically conductive yoke is also made of a cobalt alloy material. A thinned design of the sound production unit of the present invention is realized, and the magnetic induction intensity of the magnetic circuit system is also effectively improved, thereby increasing the BL value, and thus the acoustic performance requirement of the sound production unit can be met.

This invention relates to the field of audio noise reduction technology, and provides a sound field zoning control method, device, vehicle speaker, and storage medium. The method includes: acquiring transfer function signals from the speaker to each sound field zone; obtaining filter parameters for the speaker when each sound field zone is considered a bright / dark zone based on the transfer function signals and a neural network model; iterating the parameters of the neural network model based on the differences in sound field energy between the bright and dark zones in each sound field zone, wherein the sound field energy in the bright and dark zones is determined based on the transfer function signals and the filter parameters; and using the neural network model after parameter iteration to determine the sound field zoning filter parameters for the speaker to be controlled. The sound field zoning control method, device, vehicle speaker, and storage medium provided by this invention achieve a targeted improvement in isolation experience in multi-bright-zone environments from the user's listening perspective.

Disclosed in the present invention are a sound production apparatus and a terminal device. The sound production apparatus comprises a housing, a vibration system, and a magnetic circuit system; in the vibration system, a first vibration assembly comprises a first diaphragm assembly and a first voice coil connected to the first diaphragm assembly, and a second vibration assembly comprises a second diaphragm assembly and a second voice coil connected to the second diaphragm assembly; the first diaphragm assembly and the second diaphragm assembly are respectively connected to two ends of the housing and cover openings, the first voice coil is a rectangular voice coil, and the second voice coil is a racetrack-shaped voice coil; the magnetic circuit system is arranged in an accommodating cavity of the housing, and the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap; the second magnetic gap is arranged around the first magnetic gap, and at least part of the first magnetic gap is communicated with the second magnetic gap; and one end of the first voice coil is suspended in the first magnetic gap, and one end of the second voice coil is suspended in the second magnetic gap. The sound production apparatus of the present invention can reduce the height and weight in the Z direction, thereby reducing the housing vibration caused by the vibration system.

The invention discloses a sound production module, the sound production module comprises a sound production device and a module shell, the sound production device comprises a shell, a magnetic circuit system and a vibration system, and the shell is provided with a first sound outlet hole; the vibration system comprises a first vibrating diaphragm, a second vibrating diaphragm, a middle diaphragm and a voice coil, the first vibrating diaphragm is arranged on one side, far away from the magnetic circuit system, of the shell, the second vibrating diaphragm is arranged on one side, facing the magnetic circuit system, of the first vibrating diaphragm, and the middle diaphragm is arranged between the first vibrating diaphragm and the second vibrating diaphragm; a closed second sound production cavity is formed between the second vibrating diaphragm and the middle diaphragm, and the second sound production cavity is communicated with the first sound outlet hole; a first sound production cavity is formed between the module shell and the first vibrating diaphragm, the module shell is provided with a sound outlet, and the sound outlet is communicated with the first sound production cavity; the sound production module is applied to the electronic equipment, the sound production module is provided with a rear sound production channel, the electronic equipment is provided with an electronic equipment cavity and an electronic equipment sound production hole, and the electronic equipment sound production hole is communicated with a sound production port; and the rear sound outlet channel is communicated with the electronic equipment cavity.

The invention discloses a sound production device, a sound production module and electronic equipment, and relates to the technical field of electroacoustic transduction, and the sound production device comprises a first sound production monomer and a second sound production monomer which are arranged side by side along a first direction, the vibrating plates of the first sound production monomer and the second sound production monomer comprise first plate parts and second plate parts which are located on different horizontal planes in the second direction, the first plate parts are connected with the top of the voice coil and the vibrating diaphragm respectively, and the outer peripheries of the second plate parts abut against the inner peripheral wall of the voice coil; the central magnetic parts of the first sound production single body and the second sound production single body comprise a first central magnet and a second central magnet which are positioned on two opposite sides of the second plate part; the first central magnet and the second central magnet are magnetized along a second direction and are opposite in magnetizing direction; the sound production device further comprises a first magnet yoke and a second magnet yoke which are oppositely arranged in the second direction, and the outer edges of the first magnet yoke and the second magnet yoke are connected in a welded mode. According to the sound production device, the BL value is improved, and distortion is reduced.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, a vibrating diaphragm assembly of a vibrating system of the sound production device comprises a first vibrating diaphragm, a second vibrating diaphragm and a vibrating plate, the first vibrating diaphragm and the second vibrating diaphragm are arranged at an interval along a first direction and are respectively connected with two ends of a voice coil along the first direction, and the vibrating plate is located at the inner side of the voice coil and is connected with the first direction. An edge magnetic part of the magnetic circuit system is arranged between the first vibrating diaphragm and the second vibrating diaphragm and located on the outer side of the voice coil, two center magnets of a center magnetic part are located on the two sides of the vibrating plate in the first direction, the two center magnets are magnetized in the first direction, and the magnetizing directions are opposite; the sounding device forms a first cavity and a second cavity on two sides of the vibrating plate, and is provided with a first sounding hole and a second sounding hole which are respectively communicated with the first cavity and the second cavity, and the two central magnets are respectively exposed in the first cavity and the second cavity. According to the sound production device, the BL value is effectively increased, the acoustic performance is improved, and the sound leakage problem of a far field can be reduced.

The invention discloses a sound production monomer and electronic equipment, the sound production monomer comprises a magnetic circuit system, a vibration system and a shell, the magnetic circuit system comprises a magnetic conductive yoke and a magnet assembly arranged on the magnetic conductive yoke, the magnet assembly forms a magnetic gap, and the magnet assembly comprises a first magnet, a second magnet, a third magnet and a fourth magnet, the first magnet and the third magnet are magnetized in the second direction, the magnetizing directions are opposite, the second magnet and the fourth magnet are magnetized in the first direction, the first direction is perpendicular to the second direction, and the polarity of the magnetic pole, facing the first magnet, of the second magnet is the same as that of the magnetic pole, close to one side of the magnetic gap, of the first magnet. The polarity of the fourth magnet towards the third magnet is the same as that of the third magnet close to one side of the magnetic gap, so that the magnet assembly forms a magnetic field enhancement side towards the magnetic gap; the vibration system comprises a vibrating diaphragm and a flat voice coil. The magnet assembly forms a magnetic field enhancement side facing the magnetic gap, so that the magnetic field driving force is improved, and the acoustic performance of the loudspeaker is improved.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electroacoustic transduction, the sound production device comprises a magnetic circuit system and a vibration system, a central magnetic part of the magnetic circuit system comprises two central magnetic groups, and an edge magnetic part comprises an outer magnetic group located on the outer sides of the two central magnetic groups and a common magnetic group located between the two central magnetic groups. The outer magnetic group and the common magnetic group are spaced from each central magnetic group so as to define two magnetic gaps which are arranged at intervals, each central magnetic group comprises a first central magnet, a central magnetic conductive plate and a second central magnet which are arranged in a stacked mode, and the outer magnetic group and the common magnetic group each comprise a first edge magnet, an edge magnetic conductive plate and a second edge magnet which are arranged in a stacked mode. The vibration system comprises a vibrating diaphragm and two voice coils, and each voice coil corresponds to one magnetic gap. According to the sound production device, the utilization rate of the magnetic circuit system is further improved by optimizing the magnetic circuit system and adopting the double voice coils, so that the loudness and the sensitivity of the sound production device are improved.

The invention discloses a sound production device, a sound production module and electronic equipment, and relates to the technical field of electroacoustic transduction, a vibration plate of a vibration system of the sound production device comprises a first plate part, a second plate part and a third plate part which are integrally arranged, the first plate part and the second plate part are located on different horizontal planes, the top of a voice coil is connected with the first plate part, and the top of the voice coil is connected with the third plate part. The third plate part is connected with the inner circumferential wall of the voice coil in an attached mode, the two ends, in the first direction, of the third plate part are connected with the first plate part and the second plate part respectively, and a center magnetic part of the magnetic circuit system comprises a first center magnet and a second center magnet which are located on the two opposite sides of the second plate part. The sides, facing the vibrating diaphragm assembly, of the first center magnet and the second center magnet are both exposed in the inner cavity of the sound production device, and the first center magnet and the second center magnet are magnetized in the first direction and are opposite in magnetizing direction. According to the sound production device, the thinning design can be realized, the BL value is effectively improved, the magnetic lines are distributed more uniformly, the BLx curve is flatter, and thus the distortion is reduced.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electro-acoustic transformation.The sound production device comprises a shell, a magnetic circuit system and a vibration system, a common magnetic part of the magnetic circuit system is located on the outer side of a center magnetic part and is spaced from the center magnetic part to form a first magnetic gap, and side magnetic parts are located on the outer side of the common magnetic part and are spaced from the center magnetic part to form a second magnetic gap; an inner ring hole is formed in the center of a vibrating diaphragm of the vibrating system, the inner periphery of the vibrating diaphragm is connected with the magnetic circuit system, the first voice coil corresponds to the first magnetic gap, the second voice coil corresponds to the second magnetic gap, and the first voice coil and the second voice coil are connected to the vibrating diaphragm through a framework. According to the sound production device, the utilization rate of the magnetic circuit system is effectively improved, the BL value is improved, the loudness and sensitivity of the sound production device are improved, the first voice coil and the second voice coil are connected to the vibrating diaphragm through the framework, the positions of the first voice coil and the second voice coil in the magnetic circuit system are convenient to adjust, and the design of the magnetic circuit system is more flexible.

The invention discloses a sound production device and a sound production module, and relates to the technical field of electroacoustic transduction. The inner side of an inner folding ring of a first vibrating diaphragm assembly of the sound production device is connected with a magnetic circuit system, the outer periphery of an outer folding ring is connected with a shell, and a voice coil is connected with a first vibrating plate; the diaphragm and the second diaphragm assembly are sequentially arranged on the side, facing the voice coil, of the first diaphragm assembly, the diaphragm is a flexible piece, the outer edges of the diaphragm and the second diaphragm assembly are connected with the shell, and the inner edge of the diaphragm and the inner edge of the second diaphragm assembly are connected with the first vibrating plate. A sound production cavity communicated with the sound outlet hole is formed between the diaphragm and the second vibrating diaphragm assembly; wherein a first shell body of the shell is provided with a sound outlet hole, the outer periphery of the outer folding ring and the outer periphery of the diaphragm are both connected with the first shell body, the magnetic circuit system is connected with a second shell body, and the outer periphery of the second diaphragm assembly is clamped between the first shell body and the second shell body. According to the sound production device, the effective vibration area of the vibration system is increased, and the acoustic performance is improved.

The invention provides a sound field optimization method and device of a multichannel loudspeaker array, equipment and a medium, and relates to the technical field of acoustics, to-be-played audio signals are respectively input to each phase compensation filter for phase compensation filtering, and a plurality of phase-compensated audio signals are obtained; the phase compensation filter is determined according to the phase compensation value of the loudspeaker; respectively inputting each phase-compensated audio signal into a corresponding loudspeaker so as to control the multi-channel loudspeaker array to produce sound; acquiring sound field response data in the target area; and when the difference between the sound field response data and the target sound field data does not meet the set sound effect requirement, dynamically adjusting the phase compensation value of the loudspeaker, and repeating the step of phase compensation filtering until the difference between the obtained sound field response data and the target sound field data meets the set sound effect requirement. According to the invention, through a dynamic adjustment mechanism and a closed-loop optimization process, precise regulation and control of the sound field of the loudspeaker array are realized, and the sound effect quality in the target area is significantly improved.

The invention discloses a sound production device and electronic equipment, and relates to the technical field of electro-acoustic transformation.The sound production device comprises a shell, a magnetic circuit system and a vibration system, a common magnetic part of the magnetic circuit system is located on the outer side of a center magnetic part and is spaced from the center magnetic part to form a first magnetic gap, and side magnetic parts are located on the outer side of the common magnetic part and are spaced from the center magnetic part to form a second magnetic gap; the central magnetic part comprises a first central magnet, a central magnetic conductive plate and a second central magnet which are arranged in a stacked mode, the shared magnetic part comprises a first shared magnet, a shared magnetic conductive plate and a second shared magnet which are arranged in a stacked mode, and an inner ring hole is formed in the center of a vibrating diaphragm of the vibrating system. The inner periphery of the vibrating diaphragm is connected with the magnetic circuit system, the first voice coil corresponds to the first magnetic gap, and the second voice coil corresponds to the second magnetic gap. According to the sound production device, the utilization rate of the magnetic circuit system is effectively improved, and the BL value is improved, so that the loudness and sensitivity of the sound production device are improved.

The invention provides a sound production monomer and electronic equipment. The sound production monomer comprises a bracket, a magnetic circuit system and a vibration system, the magnetic circuit system comprises a central magnetic circuit, a middle magnetic circuit, a side magnetic circuit, a first magnetic conductive plate and a second magnetic conductive plate, a first magnetic gap and a second magnetic gap are respectively formed between the middle magnetic circuit and the side magnetic circuit as well as between the middle magnetic circuit and the central magnetic circuit, and a first through hole is formed in the first magnetic conductive plate; airflow channels are formed between the central magnetic circuit and the first magnetic conductive plate as well as between the middle magnetic circuit and the second magnetic conductive plate; the vibration system comprises a first vibrating diaphragm and a second vibrating diaphragm; the first vibrating diaphragm comprises a first folding ring, the first folding ring is provided with a second through hole communicated with the first through hole, sound waves of the second vibrating diaphragm radiate outwards through the first through hole and the second through hole, and the sound waves of the first vibrating diaphragm and the second vibrating diaphragm radiate outwards on the same side of the sound production single body. According to the invention, the problem that the vibration area and the vibration displacement of the existing sound production monomer cannot meet the requirements of wearable audio products such as OWS earphones can be solved.

The invention relates to the field of manufacturing of sensitive elements and sensors in the electronic core industry, in particular to a piezoelectric MEMS acoustic device and a manufacturing method thereof. The device structurally comprises a substrate, an insulating layer, a silicon substrate, a multi-layer composite film structure and a protective layer from bottom to top in sequence, wherein the multi-layer composite film structure is formed by alternately growing electrode layers and piezoelectric layers, and the first layer and the last layer of the multi-layer composite film are the electrode layers; a bonding pad is arranged on the multi-layer composite film structure; the protective layer covers the upper surface of the device; a suspended back cavity structure is arranged between the substrate and the insulating layer; the silicon substrate, the multi-layer composite film structure and the protective layer are connected through an opening communicated with the back cavity; according to the device provided by the invention, the volume of the piezoelectric material is increased mainly by adding the piezoelectric layer, and the energy conversion efficiency of the structure is effectively improved, so that the sensitivity of the transducer is improved.

The invention discloses a sound production monomer and electronic equipment, and relates to the technical field of sound energy conversion, the sound production monomer comprises a shell, a magnetic circuit system and a vibration system, the magnetic circuit system comprises a support plate, a center magnetic circuit and a side magnetic circuit, the support plate is made of a magnetic conductive material, and a magnetic gap is formed between the center magnetic circuit and the side magnetic circuit; the central magnetic circuit comprises a first magnet, a concentrating flux plate and a second magnet, the side magnetic circuit comprises a first side magnet, a middle side magnet and a second side magnet which are sequentially arranged in the first direction, and the side magnetic circuit can form a magnetic field enhancement side facing the magnetic gap; the vibration system comprises a vibrating diaphragm and an annular voice coil used for driving the vibrating diaphragm to vibrate in the first direction, one end of the annular voice coil is connected with the vibrating diaphragm, and the other end is located in the magnetic gap. The magnetizing directions of the magnets in the center magnetic circuit and the side magnetic circuits are designed, so that magnetic lines of force can be focused at the position of the magnetic conductive plate, the intensity of a magnetic field is greatly improved, a magnetic field enhancement side facing a magnetic gap is formed, and the acoustic performance of the loudspeaker is improved.