SUZHOU SONAVOX ELECTRONICS CO., LTD. Patent applications |
Patent application number | Title | Published |
20150110299 | Method and Device for Driving Digital Speaker Based on Code Conversion - A method and device for driving a digital speaker based on code conversion are provided in the invention. The method comprises the steps of: (1) converting input format; (2) performing multi-bit Σ-Δ modulation; (3) thermometer code conversion; (4) dynamic mismatch-shaping processing; (5) pulse width modulation code conversion; and (6) controlling on/off status switching of the MOSFET of a full-bridge power amplification network to drive a digital speaker load sound. The device comprises a sound source, an input format converter, a multi-bit Σ-Δ modulator, a thermometer coder, a dynamic mismatch shaper, a code converter, a multi-channel digital amplifier and a digital speaker load which are connected to each other in sequence. By means of the device and method of the invention, the switching rate of the power tube, the power dissipation and heating generated during the switching are reduced, the sound quality and efficiency of electroacoustic restoration are improved, the volume, weight and implementation cost of the system are decreased, and the level of electromagnetic radiation is reduced. Furthermore, the device and method of the invention also have excellent immunity to the frequency response deviation of multiple digital channels. | 04-23-2015 |
20140119577 | Diaphragm - A diaphragm is disclosed in the invention, which comprises a one-piece diaphragm body and a plurality of mass blocks mounted on the diaphragm body. Each of the mass blocks substantially has the same radial distance from the center of the diaphragm. The mass blocks are divided into three or more arrays each of which includes one or more mass blocks. the arrays are distributed along the circumference direction of the diaphragm body, and the mass blocks in each array are distributed along the circumference direction of the diaphragm. The mass blocks are elastic and made of materials with internal damping, such as rubber, silicone or foam rubber. At least one of the mass blocks is connected to an annular roll fixed on the peripheral edge of the diaphragm body, and the mass blocks are bonded to the diaphragm body. | 05-01-2014 |
20130108078 | METHOD AND DEVICE OF CHANNEL EQUALIZATION AND BEAM CONTROLLING FOR A DIGITAL SPEAKER ARRAY SYSTEM | 05-02-2013 |
20120269379 | DIAPHRAGM USED IN A LOUDSPEAKER AND A LOUDSPEAKER - A diaphragm and a loudspeaker using the diaphragm are disclosed. The diaphragm has a diaphragm body with at least one projection formed thereon, to reduce peaks in the medium-high frequency section of the frequency response curve for the loudspeaker, and make the frequency response curve smooth in medium-high frequency. Thereby the sound effect of medium-high frequency section is improved, and the original sound can be reflected more veritably | 10-25-2012 |