Who invented the loudspeaker and what is the history of the development of the loudspeaker?

ernst w.On January 20, 1874, Siemens (founder of Siemens & Halske) filed a patent for a prototype electric loudspeaker that subjected a voice coil with a support system to a magnetic field in order to keep the vibrating system in axial motion. At that time, it was mainly used in the field of relays rather than speakers.

On December 14, 1877, Siemens filed a patent for a trumpet with a moving voice coil attached to it as a sound radiator, and the parchment paper could be made into an exponential cone shape, which was the first solid type of phonograph in the era of the phonograph.

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In order to better tell the story of human electroacoustic history, we start with the "**" that first conveyed human voices to distant places. More than 100 years ago, on February 14, 1876, Alexander Graham Bell filed one of the most important patents in history. The invention made it possible for the human voice to travel farther than shouting.

Since then, human beings have understood the relationship between sound and electricity, and they have never been tired of it.

For better playback of recorded sounds, 1910, s g.Brown invented the separation of the driving force from the diaphragm'armature'Armature headphones.

And in 1910, Baldwin invented it again'balanced armature'Balanced armature headphones. In 1898, Oliver Lodge applied for the first patent for a practical motorized loudspeaker, which moved the voice coil in the magnetic gap of the inner and outer circular plates, and like many inventions, this great invention was too far ahead of its time. This invention determines the construction of 99% of modern dynamic speakers today.

Horn speakers originated from the phonograph. In 1928, Wente and Thuras produced their high-efficiency horn-type speaker receiver. The principle of the horn speaker is that the diaphragm pushes the air at the bottom of the horn and works, because the sound resistance is very large, so it is very efficient, but because the shape and length of the horn will affect the timbre, it is not easy to reproduce the low frequency.

Today, high-efficiency horns are mainly used in the field of professional sound reinforcement.

As the above-mentioned speaker technology gradually took shape, it became clear that the ideal transducer should use a thin diaphragm that could pass an electric current, and the idea of a ribbon speaker began.

In January 1923, Schottky and Gerlach of Siemens Halske filed a patent for the first ribbon loudspeaker. It installs a horizontal wave-shaped pure aluminum film between the poles of the magnet, which can reduce the longitudinal hardness and reduce the resonant frequency.

In 1931, Olson and Massa produced the ribbon microphone.

Ribbon speakers are mainly used in the middle and high frequency bands, because of their flat frequency response curve, extremely high frequency upper limit, and very good transient effect, so it can easily form a linear sound source.

Electroacoustics is changing the lives of human beings and changing the future of human beings, and we look forward to more electroacoustic converters being invented in the future and changing the way human beings entertain, so that the natural sounds can truly remain in the arms of human beings. See for details.

athena

Athena was the eldest daughter of Zeus.

It was invented by Bell in March 1876 that the first loudspeaker was the first speaker, but it was not very effective, and Edison later improved its call quality.

The horn was invented by the Chinese, and there were horns in ancient China.

As early as 1877, Erenst Verner of the German Siemens company patented the moving coil horn based on Fleming's left-hand law. In 1898, Sir Oliver Lodge of England further invented the cone horn according to the principle of **microphone, which is very similar to the modern horn we are familiar with, and Sir Lodge is called "Roaring**". However, this invention could not be used, because it was not until 1906 that Lee de Forest invented the three-pole vacuum tube, and it was several years before a usable amplifier was made, so it was not until the 1930s that the cone horn gradually became widespread.

Another reason was the introduction of a new record in 1921 that was electrically recorded, which had a better dynamic range (up to 30db) than traditional mechanically engraved records, forcing people to find ways to improve the horn characteristics to match. In 1923, Bell Labs decided to develop a complete regeneration system, including new record players and speakers, stereo recording and MC cartridges, stereo engraving, etc., which were invented during this wave of action. The responsibility for developing the horn fell to engineers Rice and Kellogg.

The equipment they used was unprecedented at the time, including a 200-watt vacuum tube amplifier, many of Bell Labs' own recordings, and a variety of loudspeakers developed by Bell Labs over the years, such as the rudiments of the cone horn for the lodge, the compressed air horn that used diaphragm flaps to control the flow of compressed air, the corona discharge horn (called ion-driven today), and the electrostatic horn.

Basin racks. Magnet. T iron. Sound scrolls. Spring plates. Paper cones. Hemming rolls. Terminal Blocks. Leads are composed. All are glued together.

It's Shanxi Wang Bo.

athena

Athena was the eldest daughter of Zeus.

Why don't you just look it up online.