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National Repository of Grey Literature 2 records found  Search took 0.02 seconds. 
Adjusting Acoustic of Listening Room for Subjective Assessment of Quality of Audiovisual Systems
 Bijota, Jan ; Kurc, David (referee) ; Schimmel, Jiří (advisor)
The thesis deals with acoustics of the listening room, which has to be modified to fulfil requirements in reccomendation ITU-R BS.1116. It analyses electro-acoustic reproduction chain, geometric and acoustic properties of the listening room and it also deals with conditions, which the reccomendation imposes on reference listening area. Thesis proposes a solution of listening arrangements and listening room model design according to reccomendation. This model design will be used for acoustic simulation program purposes. Resources of this thesis were speaker data sheet and my own measuring of reference monitor loudspeakers, reference listening room and reference sound field. Listening arangement was made in Microsoft Visio 2013 software. SketchUp Make software was used for model design of reference room. This model design was imported to EASE simulating software and then I started reference sound field simulation. Results of measurements and simulation don't fulfil requirements in reccomendation ITU-R BS.1116. Room can be modified by bass traps, but this modification will only reduce reverbation time. This thesis offers an insight of reproduction chain analysis and also may serve for future modification purposes of reference listening room.
Detailed record
Adjusting Acoustic of Listening Room for Subjective Assessment of Quality of Audiovisual Systems
 Bijota, Jan ; Kurc, David (referee) ; Schimmel, Jiří (advisor)
The thesis deals with acoustics of the listening room, which has to be modified to fulfil requirements in reccomendation ITU-R BS.1116. It analyses electro-acoustic reproduction chain, geometric and acoustic properties of the listening room and it also deals with conditions, which the reccomendation imposes on reference listening area. Thesis proposes a solution of listening arrangements and listening room model design according to reccomendation. This model design will be used for acoustic simulation program purposes. Resources of this thesis were speaker data sheet and my own measuring of reference monitor loudspeakers, reference listening room and reference sound field. Listening arangement was made in Microsoft Visio 2013 software. SketchUp Make software was used for model design of reference room. This model design was imported to EASE simulating software and then I started reference sound field simulation. Results of measurements and simulation don't fulfil requirements in reccomendation ITU-R BS.1116. Room can be modified by bass traps, but this modification will only reduce reverbation time. This thesis offers an insight of reproduction chain analysis and also may serve for future modification purposes of reference listening room.
Detailed record

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