The control panel of the hifi system used to mature wheels of cheese is pictured in the K3 cellar during a media presentation of the experiment to "insonify" cheese with different types of music by the University of the Arts in Burgdorf, Switzerland, March 13, 2019. Picture taken March 13, 2019. REUTERS/Denis Balibouse

The control panel of the hifi system used to mature wheels of cheese is pictured in the K3 cellar during a media presentation of the experiment to "insonify" cheese with different types of music by the University of the Arts in Burgdorf, Switzerland, March 13, 2019. Picture taken March 13, 2019. REUTERS/Denis Balibouse

Projectionist Antonio Feliciano, 75, spools film onto projection reels at Girasol cinema in Vila Nova de Milfontes, Portugal August 31, 2013. Shades of Oscar-winning classic "Cinema Paradiso" run through the life of Feliciano, a sprightly 75-year-old who fears he may be the last of Portugal's traveling film projectionists. After six decades traveling four million km (2.5 million miles) to screen 4,000 films in Portugal's far-flung villages, Feliciano does not plan to retire just yet. But he is resigned to the fact that the Internet, digital TV and distribution monopolies have made his craft obsolete. Picture taken August 31, 2013. REUTERS/Rafael Marchante

Projectionist Antonio Feliciano, 75, prepares a reel before a projection in Monforte, Portugal May 16, 2015. Shades of Oscar-winning classic "Cinema Paradiso" run through the life of Feliciano, a sprightly 75-year-old who fears he may be the last of Portugal's traveling film projectionists. After six decades traveling four million km (2.5 million miles) to screen 4,000 films in Portugal's far-flung villages, Feliciano does not plan to retire just yet. But he is resigned to the fact that the Internet, digital TV and distribution monopolies have made his craft obsolete. Picture taken May 16, 2015. REUTERS/Rafael Marchante

Projectionist Antonio Feliciano, 75, carries projection reels at Girasol cinema in Vila Nova de Milfontes, Portugal August 31, 2013. Shades of Oscar-winning classic "Cinema Paradiso" run through the life of Feliciano, a sprightly 75-year-old who fears he may be the last of Portugal's traveling film projectionists. After six decades traveling four million km (2.5 million miles) to screen 4,000 films in Portugal's far-flung villages, Feliciano does not plan to retire just yet. But he is resigned to the fact that the Internet, digital TV and distribution monopolies have made his craft obsolete. Picture taken August 31, 2013. REUTERS/Rafael Marchante

Projectionist Antonio Feliciano, 75, spools film onto projection reels at Girasol cinema in Vila Nova de Milfontes, Portugal August 31, 2013. Shades of Oscar-winning classic "Cinema Paradiso" run through the life of Feliciano, a sprightly 75-year-old who fears he may be the last of Portugal's travelling film projectionists. After six decades travelling four million km (2.5 million miles) to screen 4,000 films in Portugal's far-flung villages, Feliciano does not plan to retire just yet. But he is resigned to the fact that the Internet, digital TV and distribution monopolies have made his craft obsolete. Picture taken August 31, 2013. REUTERS/Rafael Marchante

Outdoor Tech's Tuis ultra hifi wireless headphones are on display at the annual Consumer Electronics Show (CES) in Las Vegas, Nevada January 9, 2014. REUTERS/Robert Galbraith (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY)

Fredrik Hjelmquist shows the CataCoffin in Stockholm January 18, 2013. Music and video equipment store owner Hjelmquist said his hi-fi coffin would entertain the dead and provide solace for grieving friends and relatives by making it possible for them to alter the deceased's playlist online. REUTERS/Ints Kalnins (SWEDEN - Tags: SOCIETY)

A technician works on an old video tape at the INA (National Audiovisual Institute) at Bry-sur-Marne, eastern Paris, September 19 2011. The INA is a repository of all French radio and television audiovisual archives.REUTERS/Charles Platiau (FRANCE - Tags: BUSINESS LOGO)

A cassette player is placed on bricks at a brick-making factory outside Kabul July 15, 2010. Labourers, most of whom work barefoot and without gloves, earn from $3 to $8 a day depending on their working hours and the number of bricks they make. REUTERS/Ahmad Masood (AFGHANISTAN - Tags: SOCIETY EMPLOYMENT BUSINESS)

A native Indian of the Caritiana tribe turns on his stereo unit at a reservation near the Brazilian town of Porto Velho, the capital of western Amazon's Rondonia state, November 18, 2009. The Santo Antonio dam in the western Amazon's Rondonia state, which goes online in December 2011, will pave the way for a trade route between the Atlantic and Pacific oceans by making more of the Madeira river navigable. Picture taken November 18, 2009. To match feature CLIMATE-BRAZIL/DAM REUTERS/Ricardo Moraes (BRAZIL - Tags: ENERGY ENVIRONMENT SOCIETY)

A slum dweller carries her belongings after her slum was demolished by workers appointed by the Dhaka Water and Sewerage Authority (WASA) in Dhaka June 21, 2009. Dhaka Water and Sewerage Authority evicted a slum as part of efforts to clear up the 26 canals causing water logging in the city on Sunday. About 50 families have been affected by the eviction, local media reported. REUTERS/Andrew Biraj (BANGLADESH SOCIETY ENVIRONMENT IMAGES OF THE DAY)

Gul Zaman, a 12-year-old Pashtun boy, cleans an electric piano while selling musical instruments at a market in Karachi April 22, 2009. REUTERS/Athar Hussain (PAKISTAN SOCIETY)

A man returns a cell phone to a customer after downloading music onto it at a street stand in Shanghai January 22, 2009. China's economic growth slumped in the fourth quarter, dragging down the pace of expansion in 2008 to a seven-year low as the full force of the global financial crisis struck home. REUTERS/Nir Elias (CHINA)

A Bang and Olufsen speaker in an Aston Martin DBS is seen at the motor manufacturer's production facility in Gaydon, central England, September 3, 2008. REUTERS/Darren Staples (BRITAIN)

An attendee looks at a display of car speakers at the opening day of the Consumer Electronics Show in Las Vegas, Nevada January 7, 2008. REUTERS/Rick Wilking (UNITED STATES)

The new stereo system 'Model D' by Steinway Lyngdorf is presented in London November 7, 2007. Steinway Lyngdorf's extravagant Model D sound system promises to deliver an outstanding reproduction of music akin to a live symphony orchestra in any space you place it for a mere $157,500 installed. Lyngdorf unveiled the system, which includes specially engineered speakers coated in Steinway's trademark black lacquer, to journalists and potential buyers gathered in London late on Wednesday evening. Picture taken November 7, 2007. REUTERS/Alessia Pierdomenico (BRITAIN)

A model demonstrates Toyota Motor Corp's concept product, the "Personal Mover", during the 40th Tokyo Motor Show in Chiba, east of Tokyo October 25, 2007. REUTERS/Kim Kyung-Hoon (JAPAN)

A view of the new Apple iPod Hi-Fi which was introduced by Apple CEO Steve Jobs at an event for press and industry analysts at Apple headquarters in Cupertino, California February 28, 2006. The Hi-Fi is a new home stereo high-fidelity speaker system which works with any of Apple's many iPod models. REUTERS/Lou Dematteis

A Magnadyne Linear Series car stereo is displayed at the Consumer Electronics Show in Las Vegas, Nevada January 6, 2006. The stereo can play from or record to an SD disk or through devices attached through the USB port. The stereo should be available in mid-February 2006, a Magnadyne representative said. REUTERS/Steve Marcus

A technician makes final touches on the world's most expensive HIFI audio system combine with components of different High-End audio companies - presented by a German audio magazine - which costs about 3,6 million dollars is on display at the world's largest international broadcasting and consumer fair IFA in Berlin August 27. About 870 exhibitors from 36 countries present their products at the world's largest international broadcasting and consumer fair IFA which will open to the public on Saturday.

FAB/CLH/

A woman adjusts the levels on the worlds most expensive sound system during an international broadcasting fair in Berlin August 29. The system, which was arranged by a German magazine, is made up of different components from various manufacturers and is estimated to cost $2.16 million.

GERMANY