Innovation Sound Technology Co., Ltd.

Shun Ming Yuen

Ka Ming Wu

Wai Yin Mung

Lei Zheng

Chun Lan

Shui Shing Choi

The application belongs to the field of earphone technology, and discloses a type of noise-reducing earphones with adjustable voice. An audio processor processes voice signals. After a digital signal processor (DSP) completes noise reduction, the signals return to the audio processor, where two signals are combined, through another signal wire. Then the signals are transmitted to a digital-to-analog converter (DAC) that transmits the signals to an acoustic amplifier, where the signals are transmitted to a speaker to realize the adjustment of voice.

Noise-reducing earphone with adjustable voice

The present invention discloses a lumped circuit balance converter applied to double-sided parallel lines, comprising a radio frequency transceiver, a balance converter, a filter and a matching network. The filter is connected with the matching network through the balance transmission line. The balance converter comprises a second circuit block, a first circuit block, a third circuit block, a first port, a second port and a third port. A positive polarity of a signal is positioned at the top of the second port and the bottom of the third port. Balance signals are respectively fed to the converter at the top of the second port and the bottom of the third port, and the signals are combined in the first port. The present invention has simple structure and better effect when used, can be easily changed to different required performance, and has good applicability and strong practicability.

Lumped circuit balance converter applied to double-sided parallel lines

A moving-coil speaker includes: a magnetic path unit (); an annular frame () connected to exterior of the magnetic path unit () and used to carry a membrane (); and a PCB () installed on the frame () and used to solder thereon a component or provide electrical conduction. An outer perimeter of the frame () is 45 mm. A positioning pin () is disposed at a front side of the frame () and overlapping with a central axle extension line of the PCB (). Two sets of air vents () are provided on the frame on two sides of the positioning pin (). A tune paper () is pasted on the surface of the frame () on the two sides of the positioning pin (). A distance between the positioning pin () and the center of a first air vent at the starting place of each set of air vents () is equivalent to a distance between a side of the PCB () and the center of a second air vent at the last place of each set of air vents (). The &#x3a6;45 mm speaker is a balance between a &#x3a6;40 mm speaker and a &#x3a6;50 mm speaker, and can meet requirements with respect to structures and appearances for this type of earphones.

Moving-coil speaker

The present invention relates to an earphone, which comprises a shell, a speaker arranged in said shell, an sound chamber corresponding to said speaker and an E&M, in which the sound emission hole is arranged in said E&M, and connected with said sound chamber; the earphone also comprises a normally closed pressure relief channel used for connecting the said sound chamber and the outside, and connected when a user puts said E&M in the ear canal.

Earphone

This invention relates to Bluetooth earphone. Existing Bluetooth earphones have some problems: users must wear the earphone to use it, so that the user will feel uncomfortable if the user uses the earphone for a long time. In order to solve these problems, this invention has added a speaker with larger power (i.e. 3W) and configured corresponding speaking amplifying circuit and switching circuit based on the existing Bluetooth earphones. With these new features, the user can adjust his/her Bluetooth earphone by switching different circuit so that it can work in earphone mode or speaker mode. When the Bluetooth earphone works in speaker mode, the user can hear normal voice without wearing the Bluetooth earphone. Obviously, this new invention can be used not only as a common earphone, but also as a speaker. In addition, a call identification circuit, a Bluetooth transmitting circuit and a microphone can be added to expand functions of the whole Bluetooth earphone. As a result, it can be used as a Bluetooth telephone receiver/transmitter cooperated with the fixed telephone or mobile phone.

Growing community of inventors

Guangdong, China

Shun Ming Yuen