Sökning: "Reverberation time"

Visar resultat 1 - 5 av 54 uppsatser innehållade orden Reverberation time.

1. 1. Standardized Test Methods in Over-the-Air Chambers for FCC Part 27

   Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

   Författare :Oskar Hellström; [2023]
   Nyckelord :;

   Sammanfattning : Base stations (BSs) are the cornerstone that enables wireless communications. In order for a new BS variant to be imported and sold in the US they are required to undergo electromagnetic compatibility (EMC) testing. This testing is necessary to obtain their Federal Communications Commission (FCC) certification. LÄS MER

3. 2. The effect of furniture on room acoustic parameters and its dependence on the sound absorbing properties of the ceiling

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Teknisk akustik; Lunds universitet/Institutionen för byggvetenskaper

   Författare :Huong Nguyen; [2023]
   Nyckelord :Room acoustics; furniture; Sabine s formula; SEA model; sound absorption; sound scattering; reverberation time; speech clarity; sound strength; Technology and Engineering;

   Sammanfattning : In ordinary public rooms such as classrooms and offices, the base line of acoustical treatment is an absorbent suspended ceiling. Due to the non-uniform distribution of the absorptive ceiling material, the scattering as well as the absorption properties of furniture will have a significant effect on room acoustic parameters such as reverberation time, speech clarity and sound strength. LÄS MER

4. 3. Development of a Novel Method for Automotive On-board Transmitter EMC Immunity Testing

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

   Författare :Ludvig Holm; [2023]
   Nyckelord :Electromagnetic Compatibility EMC ; Reverberation Chamber RC ; Vibrating Intrinsic Reverberation Chamber VIRC ; Cumulative Distribution Function CDF ; Rayleigh Distribution; Immunity testing; On-board Transmitter OBT ; Reverberating On-board Transmitter ROBT ; Expected Isotropicity; Delta-DoF; Elektromagnetisk Kompatibilitet; Modväxlande Kammare; Kumulativ Fördelningsfunktion; Rayleighfördelning; Immunitetstest; Simulerad Strålningskälla i Fordon ISO 11451-3:2015 ; Modväxlande Simulerad Strålningskälla; Förväntad Isotropicitet;

   Sammanfattning : As the automotive industry advances through technology integration, components are designed to operate at increasingly higher frequencies. Consequently, there will be an increasing demand for automotive electromagnetic compatibility (EMC) testing. LÄS MER

5. 4. Prediction of Reverberation Time in Office Spaces by Investigation of the Scattering Factor in Odeon

   Master-uppsats, KTH/Teknisk akustik

   Författare :Viktor Söderlund; [2023]
   Nyckelord :Scattering Factor; Reverberation Time; Odeon; Sabine; Arau-Puchades; Spridningsfaktor; Efterklangstid; Odeon; Sabine; Arau-Puchades;

   Sammanfattning : Accurate estimations of the reverberation time of furnished office spacesis essential as an acoustic consultant. A time efficient way to predict thefurniture’s effect is to investigate it by software modelling. The room acousticsoftware Odeon is suitable for doing this. LÄS MER

7. 5. Can a Dry Recording Treated with a Convolution Reverb in a Surround Sound Speaker System be Perceived as Maintaining the Same Degree of Naturalness as Real Recorded Reverberation?

   Kandidat-uppsats, Luleå tekniska universitet/Institutionen för ekonomi, teknik, konst och samhälle

   Författare :Sophie Andersson; [2023]
   Nyckelord :;

   Sammanfattning : When recording classical instruments, access to a physical space of acoustic properties associated with classical music might not always be available. This study seeks to investigate if classical music recorded in an environment with a short reverberation time can be treated with an impulse response from a concert hall and still maintain the same sense of naturalness. LÄS MER