Characteristics of sound

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  • WHAT IS THEIR SIMILARITIES………. THEY ARE ALL MUSICIANS….
  • WHAT ABOUT THIS WHAT IS ITS SIMILARITIES….. THEY ARE ALL SOUND INSTRUMENTS
  • TODAY OUR TOPIC IS ALL ABOUT THE CHARACTERISTICS OF SOUND WAVES… AND THERE ARE THREE CHARATERISTICS OF SOUND WAVES……
  • Lets her a different intensities and loudness of the sound…..okay let me play this sound…..What did you observed guys
  • Let me play here a different type of sounds…..okay what did you observed guys
  • Okay lets here a sound of the ambulance instead…. Coming in and going out
  • The Doppler effect as produced by the siren of a moving police vechicle as it is approaching the boy and moving away from the girl.
  • It is not difficult to identify the sounds produced by different musical instruments, even if they produce the same tone with equal intensity. There are differences in the quality of sounds. For this reason , a person could be identified by the quality of his or her voice. Very often, you can tell who is talking without seeing the person. This is due to the quality of the sound produced by the person.Examples: lets here different types of sound
  • Characteristics of sound

    1. 1. ARE YOU READY FORTONIGHT’S CONCERT?
    2. 2. CHARACTERISTICS OF SOUND•Intensity and Loudness•Pitch•Quality
    3. 3. INTENSITY AND LOUDNESS Loudness is a physiological sensation. It dependsmainly on sound pressure but also on the spectrum ofthe harmonics and the physical duration. The intensity ofsound, at a given distance, depends upon the amplitudeof the waves. Thus, a tuning fork gives out more energyin the form of sound when struck hard than when struckgently. You should remember that when a tuning fork isstruck, the sound is omnidirectional (heard in alldirections), because the sound waves spread out in alldirections. www. personal.cityu.edu.hk/~bsapplec/characte.htm+characteristics+of+sound&cd=1& www.electriciantraining.tpub.com/14182/css/14182_32.htm
    4. 4. PITCH Pitch refers to how low or high a sound is.The pitch of a sound depends on its frequency. Ahigh pitch sound has a high frequency and a lowpitch sound has a low frequency. The human ears can detect sounds betweenfrequencies of 20 and 20 000 Hz. Sounds abovethis range are ultrasonic. Dogs can hearfrequencies up to 25 000 Hz.
    5. 5. DOPPLER EFFECT Have you noticed how the pitch of the policevehicle siren gradually drops as it moves awayfrom you? As the siren approaches, the distanceof the sound waves decreases or becomesshorter. When the ambulance moves away, lesswaves reach you each second, and the pitchbecomes lower. Any change in frequency whenyou or wave source moves is known as DopplerEffect, a phenomenon named after itsdiscoverer, Christian Doppler.
    6. 6. DOPPLER EFFECT
    7. 7. QUALITY OF SOUND Sound "quality" or "timbre" describes thosecharacteristics of sound which allow the ear todistinguish sounds which have the same pitchand loudness. Timbre is then a general term forthe distinguishable characteristics of a tone.Timbre is mainly determined by the harmoniccontent of a sound and the dynamiccharacteristics of the sound such as vibrato andthe attack-decay envelope of the sound. http://hyperphysics.phy-astr.gsu.edu/hbase/sound/timbre.html
    8. 8. IN GENERAL…… There are three characteristics of sound waves the intensity and loudness, pitch and the quality of sound.

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