this ppt discuss about how sound energy get converted into electrical energy using piezo electric material. In the bottom slides i gave just figures which are self explanatory.

1. Converting sound energy
into
Electrical energy using piezo
electric material

2. Electrical
Energy
Solar
energy
Thermal
energy
Hydro
energy
Wind
energy
Chemical
energy
Tidal
energy
Common alternative Source of energies

4. Example?
Micro Phone

5. Sound
Form of vibrational energy that propagates
through all mediums except in vacuum.

6. Which material will convert
sound energy to electrical?
Piezo electric material

7. How it works ?
When the material is
Stressed, the mechanical strain
energy gets converted
into electrical energy

8. What happens when stress is applied?

9. Do the all piezo electric material will
convert sound energy to electrical energy?
NO
Materials like quartz, bone, DNA could not
able to convert as they are formed naturally
But artificially materials like zinc oxide
( commonly known as calamine lotion),
Lithium niobatet etc..,

10. How Generally current produces?

11. Methodologies suggested
Method 1: Force (sound)

12. Method 2:
Sound Heat Electricity

13. Method 3
Sound Piezo Electric Electricity

14. How much energy could we produce?
For Each 100 dB we get 0.5V
1000 dB 5 Volts
By this voltage we can easily charge our home appliances
like mobile etc..,

15. where can we harvest sound ?
every where around us ..
Industries
Thermal plants
Nuclear plants
Explosions
Roads
Auditorium

16. Conclusion :
Sound is not continuous form of energy source and
difficult to harvest but with help of piezo electric
material it can be over come.

17. References:
International Journal of Mechanical Engineering
and Technology (IJMET), ISSN 0 
0(Print), ISSN 0  (Online) Volume ,
Iue , January (0),  IEME
INTERNTIONL JOURNL OF MECHNICL
ENGINEERING ND TECHNOLOGY (IJMET)[] J. Kymii, C. Kendall, J. J.
Paradio, and N. Gerhenfeld, Paraitic oer
harveting inhoe, in Proc. nd IEEE Int.
Conf.Wearable Comuting, Lo lamito, C,
ug. ,. .
[] N. S. Shenck and J. . Paradio,
Energy cavenging ith Shoe-mounted
ieoelectric,IEEE Micro, vol. , no. ,
. 0, May-Jun. 00.
[] S. Roundy, The oer of good
vibration, Lab Note- Reearch from the

18. Thank you