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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Digital Transducer Array Loudspeakers System
 Ležák, Petr ; Káňa, Ladislav (referee) ; Schimmel, Jiří (advisor)
This thesis discusses loudspeakers with a direct D/A conversion, possibilities of their technical solution and construction. It analyses classic conversion of digital signal to analog with D/A converters, amplifiers and loudspeakers and possibilities of its replacement by loudspeakers with a direct D/A conversion. The main part of thesis is devoted to design of a loudspeaker with a direct D/A conversion and a proper exciter for it. The exciter is designed from a block diagram to a specific electric circuit and printed circuit boards. The loudspeaker system is designed as well and the results of its simulations are included in this thesis. The device was constructed and tested. The program which generates digital harmonic signal on parallel port was written and electric and acoustic properties of the device was measured and discussed.
Detailed record
Digital Transducer Array Loudspeakers System
 Ležák, Petr ; Káňa, Ladislav (referee) ; Schimmel, Jiří (advisor)
This thesis discusses loudspeakers with a direct D/A conversion, possibilities of their technical solution and construction. It analyses classic conversion of digital signal to analog with D/A converters, amplifiers and loudspeakers and possibilities of its replacement by loudspeakers with a direct D/A conversion. The main part of thesis is devoted to design of a loudspeaker with a direct D/A conversion and a proper exciter for it. The exciter is designed from a block diagram to a specific electric circuit and printed circuit boards. The loudspeaker system is designed as well and the results of its simulations are included in this thesis. The device was constructed and tested. The program which generates digital harmonic signal on parallel port was written and electric and acoustic properties of the device was measured and discussed.
Detailed record

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