Abstract: A full-frequency band high quality speaker with a bar and sound tunnels includes a voice coil, magnet, diaphragm and magnetically conductive structure; the diaphragm is conical, a bridge-style bar is on the surface of at least one side of the diaphragm; the diaphragm includes at least two grooves, each horizontally radial; each groove crosses the bridge-type bar in the horizontal direction and the length direction of the groove is perpendicular to the bridge-type bar; the groove is concave on the surface of the diaphragm to form a sound tunnel. The diaphragm is changed to the current standard vibration mode, and the timbre of treble register is not bright and the timbre of bass register is not sonorous and mellow enough from the perspective of vibration, resonance and phonation. The practice proves that the improved scheme has outstanding substantive characteristics and remarkable technical progress, and has obtained obvious technical results.

Abstract: A grand piano soundboard with a bar and sound tunnels has an outer wall with first and second grooves. The first groove is arranged diagonally in the width direction. The second groove is arranged diagonally in the length direction. The grooves cross and connect on the outer wall of the soundboard. The outer wall is divided into four resonance regions, and its center has a bar assembly having strip-shaped bar members arranged on both sides of the grooves in pairs; The grooves form a sound tunnel on the outer wall. The soundboard is changed from the previous free vibration mode to the current standard vibration mode. The treble of the grand piano is bright and the bass was sonorous and mellow from the perspectives of vibration, resonance and phonation. The design scheme has outstanding substantive characteristics and remarkable technical progress, and has obtained technical results.

Abstract: A double-bar violin family without sound post, including a resonance box, with a front plate, back plate and sidewalls, wherein: two upper bars are parallel on the front plate inner wall; two lower bars are parallel on the back plate inner wall; an upper cross groove sits on the front plate inner wall, and forms an upper cross sound tunnel on the front plate inner wall; a lower cross groove sits on the back plate inner wall, and the lower cross groove forms a lower cross sound tunnel on the back plate inner wall. This breaks the shackles of the traditional bass bar and sound post design in resonance box, eliminates sound post in resonance box, and proposes a new improved design, wherein treble register is not bright, and bass register is not sonorous and mellow enough, so the resonance box produces treble, alto, and bass registers with good timbre.

Abstract: A full-frequency band high quality planar resonance speaker with a bar and sound tunnels includes a planar diaphragm, whose outer edge is connected to the outer frame of the speaker through an elastic connector; a sound source is arranged in the middle; first and second grooves are arranged on the surface of the diaphragm and are crossed and connected with each other, the surface of the diaphragm is divided into four resonance regions; the diaphragm includes a bar assembly at the center of the surface with the grooves, which includes a plurality of strip-shaped bar members arranged on both sides of the grooves in pairs; the grooves form a sound tunnel on the surface of the diaphragm. The speaker solves the problem that the timbre of treble register is not bright and the timbre of bass register is not sonorous and mellow from the perspective of vibration, resonance and phonation.

Abstract: A full-frequency band high quality electronic products speaker with a bar and sound tunnels, including a voice coil, metal plate, diaphragm and magnetically conductive structure; the diaphragm is annular, the outer edge combines with the speaker outer frame and the inner edge combines with the metal plate outer part; the diaphragm includes an annular bridge-type bar on the upper surface of the diaphragm inner edge, and located horizontally on the outside of the speaker metal plate; the diaphragm upper surface includes four grooves, which diaphragm surface outside the bridge-type bar is divided into four resonance regions; each groove crosses the bridge-type bar; and are concave on the diaphragm upper surface forming sound tunnels. The diaphragm changes to the standard vibration mode, and the timbre of treble register is not bright and the timbre of bass register is not sonorous and mellow enough from the perspective of vibration, resonance and phonation.

Abstract: A full-frequency band high quality MEMS microphone with a bar and sound tunnels includes a sensor, acoustic chamber, and circuit board; the sensor includes a diaphragm and silicon back plate; the diaphragm is provided with a bar assembly; the bar assembly includes a plurality of arc-shaped bar members, arranged in a ring, and a gap is formed between the two adjacent members; the diaphragm has an annular area and at least two radial grooves on the same surface with the bar assembly; the radial grooves are arranged radially and uniformly, and then the surface of the diaphragm located outside the bar assembly is divided into multiple resonance regions; the radial grooves and gaps between the two arc-shaped bar members are matched one by one; each radial groove inner end is connected with the annular area; the radial groove is concave on surface of the diaphragm to form a sound tunnel.