Context and question: The mid-1970s saw the introduction of dbx-encoded records, again for the audiophile niche market. These were completely incompatible with standard record playback preamplifiers, relying on the dbx compandor encoding/decoding scheme to greatly increase dynamic range (dbx encoded disks were recorded with the dynamic range compressed by a factor of two in dB: quiet sounds were meant to be played back at low gain and loud sounds were meant to be played back at high gain, via automatic gain control in the playback equipment; this reduced the effect of surface noise on quiet passages). A similar and very short-lived scheme involved using the CBS-developed "CX" noise reduction encoding/decoding scheme.
What did CBS develop in order to reduce outside noise?
Answer: "CX" noise reduction
Context and question: The status of "language" is not solely determined by linguistic criteria, but it is also the result of a historical and political development. Romansh came to be a written language, and therefore it is recognized as a language, even though it is very close to the Lombardic alpine dialects. An opposite example is the case of Chinese, whose variations such as Mandarin and Cantonese are often called dialects and not languages, despite their mutual unintelligibility.
Why might Mandarin and Cantonese not be regarded as dialects?
Answer: mutual unintelligibility
Context and question: Portugal has developed a specific culture while being influenced by various civilizations that have crossed the Mediterranean and the European continent, or were introduced when it played an active role during the Age of Discovery. In the 1990s and 2000s (decade), Portugal modernized its public cultural facilities, in addition to the Calouste Gulbenkian Foundation established in 1956 in Lisbon. These include the Belem Cultural Centre in Lisbon, Serralves Foundation and the Casa da Musica, both in Porto, as well as new public cultural facilities like municipal libraries and concert halls that were built or renovated in many municipalities across the country. Portugal is home to fifteen UNESCO World Heritage Sites, ranking it 8th in Europe and 17th in the world.
Portugal modernized its public cultural facilities during what two decades?
Answer:
1990s and 2000s