Sökning: "Maximum Sound Pressure Level SPL"

Hittade 2 uppsatser innehållade orden Maximum Sound Pressure Level SPL.

1. 1. Automatic Maximum Sound Pressure Level (SPL) Measurements Inside Cars

   Master-uppsats, KTH/Teknisk akustik

   Författare :Luyao Dong; [2023]
   Nyckelord :Audio Measurement; Distortions; Maximum Sound Pressure Level SPL ; Automotive Audio; Ljudmätning; distorsion; maximal ljudtrycksnivå; billjud;

   Sammanfattning : With a growing interest in technical specifications among consumers, there is a need for accessible measurement tools that enable individuals to evaluate the performance of their equipment, including common speakers and car audio systems, beyond what the manufacturer provides. However, the existing measurement systems are often geared towards professionals. LÄS MER

3. 2. Investigating the Impact of Water Injection on Noise Generation During Rocket Lift-Off

   Master-uppsats, Luleå tekniska universitet/Rymdteknik

   Författare :Sångberg Linus; [2021]
   Nyckelord :Rocket lift-off; Turbulent mixing noise; CFD;

   Sammanfattning : This thesis aim to provide SSC, Swedish Space Corporation, with a foundation for understanding the key ideas behind water injection during rocket lift-off, including problems to be avoided when simulating the phenomena. This investigation focus on finding approaches suitable for obtaining a rough estimate of the reduction in noise generation, when too expensive equipment required is absent. LÄS MER