HSS is a pioneering sound-generation technology Developed from American Technology Corporation(ATC) It works by using harmless ultrasonic tones that we can't hear Sound is directed only where it is intended to go. Sound does not spread to the sides, eliminating the problem of uncomfortable and unwanted noise pollution produced by conventional speakers.

1. HYPERSOUND
SPEAKER
Prepared by
Jesbin Jose
Electrical & Electronics Engineering
Roll no : 25
Reg no: 13030600
GPTC Perinthalmanna
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2. INTRODUCTION
 HSS is a pioneering sound-generation technology
 Developed from American Technology Corporation(ATC)
 It works by using harmless ultrasonic tones that we can't
hear
 Sound is directed only where it is intended to go.
 Sound does not spread to the sides, eliminating the
problem of uncomfortable and unwanted noise pollution
produced by conventional speakers.
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3. WHAT IS
HYPER SONIC SOUND
 Hypersonic sound is based on ultrasonic waves.
 It is not audible by human hears.
 It’s like open light bulb & flash light bulb
 It use the Non-linearity property of air
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Fig- 1

4. HISTORY OF HSS
 HSS concept is given by -Herman Von helmboltz(1821)
 1960-Attempt HSS in Under water sonar
 1970-Mathematically proves for HSS in air
 1996-First attempt of HSS started(Good quality)
 1998-audio spot light by F.Joseph pompei
 Now using HSS by “Woddy norris”
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Fig- 2

5. ULTRASONIC
SOUND WAVES
 Sound waves which humans can’t hear
 Frequency above 20khz
 Used in sonography,detect invisible flaws,and for
cleaning
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Fig- 3

6. FREQUENCY RANGES
 The human ear is sensitive to frequencies from 20 Hz to
20 kHz
 No single loudspeaker element can operate efficiently
over this range of frequencies
 In HSS two signals are used
a) Reference signal (held constant at 200 kHz)
b) Variable signal (ranges from 200.020 kHz to 220 kHz)
 These two combine to produce audible signal
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7. WORKING
 These ultrasonic frequencies are inaudible by
themselves
 The interaction of the air and ultrasonic frequencies
creates audible sounds
 It occur when the air down converts the ultrasonic
frequencies to the lower frequency spectrum that
humans can hear.
 The basic operating principal of HSS uses a property of
air known as "non-linearity"
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8. NON-LINEARITY OF AIR
 creates new waves within another wave by the
continuous expansion and contraction of waves
 As the pressure goes up and down, the "nonlinear"
nature of the air itself causes the sound waves to be
changed slightly
 If we know how the air affects the sound waves, we can
predict exactly what new frequencies will be added into
the sufficient volume to cause the air to create these new
frequencies
 Since we only hear the new sounds that are formed by
the non-linear action of the air
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9. HSS SYSTEM
ARCHITECTURE
9
Fig- 4

10. HSS SYSTEM
ARCHITECTURE
 SMPS
 Microcontroller unit
 Audio signal processing unit
 Digital audio pre-amp
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Fig 5

11. HSS SYSTEM
ARCHITECTURE
 Variable Carrier Frequency Oscillator (VCFO)
 Dynamic DSB Modulator
 Ultrasonic Power Amplifier
 Monolithic Film Transducers
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Fig- 6 Fig- 7

12. CONNECTION SETUP 12

13. NEED OF HSS
 Due to the increase in noise pollution
 Conventional loudspeakers can replace by HSS
 Saves space for a loudspeaker
 Increase concentration level
 immersive 3-D effect without any headphones
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Fig- 9

14. APPLICATIONS OF HSS
 Automobile
 Audio video conferrence
 Military application
 parks
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Fig- 8
Fig- 9
Fig- 10

15. APPLICATIONS OF HSS
 Museum
 Virtual Home Theater
 Targeted Advertising
 Pointed Messages
 Decoration
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Fig- 11
Fig- 12
Fig- 13

16. WHY IT IS BETTER THAN
TRADITIONAL SYSTEM
 Shot tightly focused wave
 Highly directional has long distance
 Smaller in size
 No cross over network
 Simple to handle
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Fig- 14

17. ADVANTAGES
 Highly focused directional audio
 Very thin and light weight transducer used as ultrasonic
emitter
 The sound only can hear within a particular angle
 Provide HD real audio for virtual reality (virtual real audio
processing is possible)
 Support multi channel audio
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18. DISADVANTAGES
 High operating voltage required as compared to normal
audio amplifier
 Minimum stereo quality sound input required for the
proper working
 High manufacturing cost
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19. CONCLUSION
As a conclusive remark, this paper discussed About
the coming of the Hypersonic Speaker Systems
which are yet not implemented, but is a real promising
innovation which may be applied in our everyday
life and will revolutionize the sound technology.
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20. ANY QUESTIONS? 20

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