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The use of electronics in Bangladesh started in the 1930s through the field of communication with the establishment of radio stations, telephone exchanges, and wireless communication. During World War II , to satisfy military needs, the technology of wireless communication was enhanced and the latest technology was introduced in the British Raj .
The Shearing-Lansing 500-A ended up being used in "screening rooms, dubbing theaters, and early sound reinforcement". [10] In the late 1930s, Lansing created a smaller two-way speaker with a 15-inch (38 cm) woofer in a vented enclosure, which he called the Iconic system; it was used as a studio monitor and in high-end home hi-fi set-ups. [10]
The original S4 design was a 4-way system with two JBL K150 18 inch bass speakers, four JBL K110 10 inch midrange speakers, two JBL 2440 2 inch troat high frequency drivers coupled to JBL 2385 12 inch elliptical exponential horns (without the slant-plate acoustic lenses) and two JBL 2405 ultra-high frequency "slot" drivers. [7]
A loudspeaker (commonly referred to as a speaker or, more fully, a speaker system) is a combination of one or more speaker drivers, an enclosure, and electrical connections (possibly including a crossover network). The speaker driver is an electroacoustic transducer [1]: 597 that converts an electrical audio signal into a corresponding sound. [2]
The original Aiwa company was founded in 1951 and was one of the leading creators of audio products such as speakers, boomboxes and stereo systems. [2] After stagnating in the latter half of the 1990s, Aiwa was merged into Sony in 2002 and then unsuccessfully relaunched as a low-cost brand until discontinuation by 2008. Aiwa was relaunched as ...
The mountainous areas along the northern and eastern edges of the Indian Subcontinent are inhabited primarily by speakers of Tibeto-Burman languages. Indigenous Tibeto-Burman-speaking communities are found through the northern, eastern, and especially the southeastern parts of Bangladesh, primarily the Chittagong Hill Tracts.
The 3rd article of the Constitution of Bangladesh states Bengali to be the sole official language of Bangladesh. [12] The Bengali Language Implementation Act, 1987 , made it mandatory to use Bengali in all records and correspondences, laws, proceedings of court and other legal actions in all courts, government or semi-government offices, and ...
The divisions of Bangladesh are further divided into districts or zilas (Bengali: জেলা). [1] The headquarters of a district is called the district seat (Bengali: জেলা সদর, romanized: zila sadar). There are 64 districts in Bangladesh. The districts are further subdivided into 495 subdistricts or upazilas. [2]