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Museum Satria Mandala merupakan salah satu objek wisata sejarah yang berada di pusat pemerintahan negara Indonesia, Jakarta, tepatnya di Jalan Gatot Subroto. Museum ini di buka untuk umum mulai tahun 1972 yang pada saat itu peresmiannya telah dilakukan oleh presiden Soeharto dimana menurut sejarahnya, bangunan museum Satria Mandala awal mulanya sebagai rumah dari istri Soeharto yang bernama Ratna Sari Dewi Soekarno.

Museum milik Tentara Nasional Indonesia (TNI) ini juga telah menyajikan beragam peninggalan – peninggalam benda – benda perang mulai dari rudal, pesawat tempur, torpedo, ranjau, helicopter dan peralatan tempur lainnya. Sehingga objek wisata ini juga sangat cocok sekali dikunjungi oleh para pelajar yang ingin mengenal lebih jauh mengenai sejarah pertempuran bangsa Indonesia pada zaman dahulu.

Objek wisata Museum Satria Mandala mempunyai halaman depan yang cukup luas dan telah di tata sedemikian rupa sehingga suasananya akan tampak rapih sekali. Di beberapa sisi halaman depan-nya anda akan melihat sebuah benda “roket peluru kendali” yang mempunyai ukuran antara 7 hingga 8 meter, dan tidak jauh dari alat tempur tersebut anda juga akan melihat sebuah pesawat helicopter yang dahulu digunakan oleh TNI AU.

Koleksi Alat Perang Museum Satria Mandala

Hal yang tidak kalah menariknya untuk anda lihat selain di dalam Museum Satria Mandala yaitu sebuah ruang pameran alat – alat berat seperti tank – tank berlapis baja yang terdapat di sebelah samping dan belakang museum. Sebagian besar tank – tank tersebut adalah kendaraan pertama yang dimiliki oleh bangsa Indonesia buatan luar negeri. Namun dari sekian banyak koleksi kendaraan tersebut, tank amphibi milik TNI AL adalah yang paling di sukai oleh para pengunjung.

Koleksi Alat Perang Museum Satria Mandala

Museum Satria Mandala juga terlihat sangat sepi sekali dari keramaian para pengunjung, jadi ketika anda berkunjung ke tempat wisata ini, anda akan dapat dengan mudah melakukan berbagai macam aktivitas dengan lebih fleksibel dan mudah seperti berfoto – foto dekat dengan kendaraan tempur yang terdapat di Museum Satria Mandala.

Objek wisata Museum Satria Mandala juga sangat cocok sekali di kunjungi oleh keluarga yang ingin mengenalkan tentang sejarah dan alat – alat tempur yang digunakan oleh bangsa Indonesia dalam memperjuangkan kemerdekaannya pada masa lampau. Dan untuk memasuki objek wisata ini, anda juga akan dikenakan biaya sebesar 2500 rupiah untuk anak – anak dan 5 ribu rupiah untuk orang dewasa, harga yang cukup murah bukan.

TEMPAT WISATA MUSEUM SATRIA MANDALA

Though Robin and Joan Rolfs owned two rare talking dolls manufactured by Thomas Edison’s phonograph company in 1890, they did not dare play the wax cylinder records tucked inside each one.

The Rolfses, longtime collectors of Edison phonographs, knew that if they turned the cranks on the dolls’ backs, the steel phonograph needle might damage or destroy the grooves of the hollow, ring-shaped cylinder. And so for years, the dolls sat side by side inside a display cabinet, bearers of a message from the dawn of sound recording that nobody could hear.

In 1890, Edison’s dolls were a flop; production lasted only six weeks. Children found them difficult to operate and more scary than cuddly. The recordings inside, which featured snippets of nursery rhymes, wore out quickly.

Yet sound historians say the cylinders were the first entertainment records ever made, and the young girls hired to recite the rhymes were the world’s first recording artists.

Year after year, the Rolfses asked experts if there might be a safe way to play the recordings. Then a government laboratory developed a method to play fragile records without touching them.

Audio

The technique relies on a microscope to create images of the grooves in exquisite detail. A computer approximates — with great accuracy — the sounds that would have been created by a needle moving through those grooves.

In 2014, the technology was made available for the first time outside the laboratory.

“The fear all along is that we don’t want to damage these records. We don’t want to put a stylus on them,” said Jerry Fabris, the curator of the Thomas Edison Historical Park in West Orange, N.J. “Now we have the technology to play them safely.”

Last month, the Historical Park posted online three never-before-heard Edison doll recordings, including the two from the Rolfses’ collection. “There are probably more out there, and we’re hoping people will now get them digitized,” Mr. Fabris said.

The technology, which is known as Irene (Image, Reconstruct, Erase Noise, Etc.), was developed by the particle physicist Carl Haber and the engineer Earl Cornell at Lawrence Berkeley. Irene extracts sound from cylinder and disk records. It can also reconstruct audio from recordings so badly damaged they were deemed unplayable.

“We are now hearing sounds from history that I did not expect to hear in my lifetime,” Mr. Fabris said.

The Rolfses said they were not sure what to expect in August when they carefully packed their two Edison doll cylinders, still attached to their motors, and drove from their home in Hortonville, Wis., to the National Document Conservation Center in Andover, Mass. The center had recently acquired Irene technology.

Audio

Cylinders carry sound in a spiral groove cut by a phonograph recording needle that vibrates up and down, creating a surface made of tiny hills and valleys. In the Irene set-up, a microscope perched above the shaft takes thousands of high-resolution images of small sections of the grooves.

Stitched together, the images provide a topographic map of the cylinder’s surface, charting changes in depth as small as one five-hundredth the thickness of a human hair. Pitch, volume and timbre are all encoded in the hills and valleys and the speed at which the record is played.

At the conservation center, the preservation specialist Mason Vander Lugt attached one of the cylinders to the end of a rotating shaft. Huddled around a computer screen, the Rolfses first saw the wiggly waveform generated by Irene. Then came the digital audio. The words were at first indistinct, but as Mr. Lugt filtered out more of the noise, the rhyme became clearer.

“That was the Eureka moment,” Mr. Rolfs said.

In 1890, a girl in Edison’s laboratory had recited:

There was a little girl,

And she had a little curl

Audio

Right in the middle of her forehead.

When she was good,

She was very, very good.

But when she was bad, she was horrid.

Recently, the conservation center turned up another surprise.

In 2010, the Woody Guthrie Foundation received 18 oversize phonograph disks from an anonymous donor. No one knew if any of the dirt-stained recordings featured Guthrie, but Tiffany Colannino, then the foundation’s archivist, had stored them unplayed until she heard about Irene.

Last fall, the center extracted audio from one of the records, labeled “Jam Session 9” and emailed the digital file to Ms. Colannino.

“I was just sitting in my dining room, and the next thing I know, I’m hearing Woody,” she said. In between solo performances of “Ladies Auxiliary,” “Jesus Christ,” and “Dead or Alive,” Guthrie tells jokes, offers some back story, and makes the audience laugh. “It is quintessential Guthrie,” Ms. Colannino said.

The Rolfses’ dolls are back in the display cabinet in Wisconsin. But with audio stored on several computers, they now have a permanent voice.

Ghostly Voices From Thomas Edisonís Dolls Can Now Be Heard

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