audio spot light
TRANSCRIPT
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RRIMT/EC/3rd Yr/6th Sem/Seminar 1
18-02-2015
AUDIO SPOT LIGHT
Abhijeet Aditya1236131801E.C. 3rd Year
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RRIMT/EC/3rd Yr/6th Sem/Seminar 2
INTRODUCTION THEORY COMPONENTS & SPECIFICATIONS TECHNOLOGY OVERVIEW FEATURES & APPLICATIONS ADVANTAGES & DISADVANTAGES CONCLUSION
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CONTENTS
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INTRODUCTIONWHAT IS AUDIO SPOTLIGHTING?
It creates focused beams of sound similar to light beams coming out of a flashlight.
It uses ultrasonic energy to create extremely narrow beams of sound that behave like beams of light
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Into the depth of audio spot lighting
Loudspeakers are direct radiating—that they
fundamentally a piston like device designed to directly pump air molecules into motion to create audible sound we hear
The beam angle of audible sound is very wide, just about 360 degrees
In order to focus sound into a narrow beam, you need to maintain a low beam angle that is dictated by wavelength18-02-2015
THEORY
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The original low frequency sound waves such as human speech or music are applied into an audio spotlight emitter deviceThis low frequency signal is frequency modulated with ultrasonic frequenciesSince ultrasonic frequency is used the wavelength of the combined signal will be in the order of few millimetersSince the wavelength is smaller the beam angle will be around 3 degree, as a result the sound beam will be narrow one with a small dispersion
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RRIMT/EC/3rd Yr/6th Sem/Seminar 718-02-2015
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RRIMT/EC/3rd Yr/6th Sem/Seminar 8
CONVENTIONAL AND AUDIO SPOT LIGHT PHENOMENON
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RRIMT/EC/3rd Yr/6th Sem/Seminar 9
Components of audio spot
light
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RRIMT/EC/3rd Yr/6th Sem/Seminar 10
Audio Spotlight consists of following major
components:
Sound beam processor/amplifier Frequency oscillator Modulator Microcontroller Power supply Audio Spotlight transducer18-02-2015
COMPONENT & SPECIFICATION
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RRIMT/EC/3rd Yr/6th Sem/Seminar 11
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SOUND BEAM PROCESSOR
Worldwide power input standard
Standard chassis 171mm(w) x57mm(h) x 280mm(d) option mount rack kit
Audio input: balanced custom configurations available
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RRIMT/EC/3rd Yr/6th Sem/Seminar 12
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AUDIO SPOTLIGHT TRANSDUCER 445 mm diameter, 12.7 mm
thick, 1.82kg Wall, overhead or flush
mounting Audio input :100dB max Usable range :20m Audibility to 200m Compatible with loudspeaker
mounting accessories due to continue development
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RRIMT/EC/3rd Yr/6th Sem/Seminar 13
The Audio Spotlight & Hyper Sonic Sound
uses ultrasonic energy to create extremely narrow beam of sound that behave like beam of light
These ultrasonic sound have very small wavelength
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TECHNOLOGY OVERVIEW
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DIRECT AUDIO & PROJECTED AUDIO
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RRIMT/EC/3rd Yr/6th Sem/Seminar 15
Physically small speakers
No need for woofers, voice coils
Power efficient Directionality
Resultant audio retains directionality of ultrasonic sound source
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Features
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APPLICATION 1Audio Spotlight
speakers allow visitor to enjoy music while other read nearby peace & quiet
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APPLICATION 2Using this
technology two person can hear different sound while standing close to each other
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APPLICATION 3
The US Navy using this technology on deck as a substitute to the radio operator's headphones
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RRIMT/EC/3rd Yr/6th Sem/Seminar 19
Can focus sound only at place you want
Ultrasonic emitter devices are thin and flat
The focused or directed sound travels much faster in a straight line than conventional loudspeakers
Dispersion can be controlled-a very narrow or wider to cover more listening area
There is no lag in reproducing the sound
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ADVANTAGES
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Line of sight should be clear Directivity directly depends on the length of
the ultrasonic column
Long distance transmission is not possible
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DISADVANTAGES
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RRIMT/EC/3rd Yr/6th Sem/Seminar 21
Audio spotlighting is really going to make a revolution in
sound transmission and the user can decide the path in which audio signal should propagate
Due to the unidirectional propagation it finds application in large number of fields.
Audio spotlighting system is going to shape the future of sound and will serve our ears with magical experience
So we can conclude- Audio Spotlighting really “put sound where you want it” and will be “A REAL BOON TO THE FUTURE.”
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CONCLUSION
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THANK YOU!For Your Attention
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RRIMT/EC/3rd Yr/6th Sem/Seminar 23
Queries???
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