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please send me some information regarding these two tpoics ....etc

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1. INTRODUCTION
As more and more attention is paid to the ocean, the requirement of exploration and exploitation to it grows increasingly. In order to realize some tasks in the ocean such as collection of the information, monitoring of the environment, exploration of energy sources, forecast of natural disaster, assistant navigation, underwater communication technique has become a very important scientific research field. Because acoustic wave is adopted to actualize communication in the water instead of electromagne ....etc

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Thermo acoustic Refrigeration is based on the principles of creation of temperature gradient from sound waves and this theory was first developed in 1960s. Unlike vapour compression system, Thermo acoustic engines uses inert gases which is safe and no adverse effect on the atmosphere like the depletion of ozone layer and global warming.

Even though acoustic Refrigeration is efficient and cost effective its commercial application is warranted the need of more R&D efforts for technology up gradation and standardization without which its eff ....etc

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HELLO I AM A STUDENT OF THE FINAL YEAR OF ENGINEERING AND INTERESTED IN THE TOPIC STATED ABOVE SO PLEASE GIVE ME SOME MORE INFORMATION ABOUT THERMO ACOUSTIC REFRIGERATION.
THANKING YOU. ....etc

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Acoustic Refrigeration
Foundation
Thermoacoustic Refrigeration
Alternative
Replaces Compressor with a loud speaker
Substitutes conventional refrigerants for inert gases (i.e. helium)
Operation
Increase Pressure raise Temperature
Diffusion of heat to or from stacks: Thermal Penetration
Standing Wave: Pressure in phase with Displacement
Application
Existing
NASA
Preserve blood and urine samples
U.S. Navy
Cool radar electronics onboard warships
Potential
Marine Vehicles
Replace Noisy Genera ....etc

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1.proportions of various losses in thermal power plant.
2.especially what amount of energy lost by the steam to pipes while passing from boiler to turbine. ....etc

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urgent neede seminar on Acoustic parking system ....etc

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Presented by
AKHILESH.S




Introduction

3D audio system developed by William.G.Gardner.

Sound cards, multimedia speakers, video
games etc.. Are marketed as having 3D capability.

A new technology called Acoustic Environment modeling has emerged which combines basic 3D technology to simulate natural acoustic scenes.

3D AUDIO SYSTEM

A 3D audio system has the ability to position sounds all around a listener.

Here the sound is created by headphones, but th ....etc

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BackGround
A CDMA (Code Division Multiple Access) based communication system allows the users to share an available frequency spectrum. The users are allocated different codes that are recognizable for the preferred receivers. This solution has several advantages, among other it gives increased robustness to interference. The CDMA project will investigate the benefits and losses of using CDMA communication system on an acoustic channel between two computers. The focus of the project will be to study how a higher data rate will affect ....etc

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