police siren analysis
DESCRIPTION
This presentation will give you an answer to an interesting question: "Why siren sounds so different?" To relate the analysis to it, please visit http://deepaksharma1992.blogspot.in/2013/05/what-makes-sound-of-siren-so-different.htmlTRANSCRIPT
?WHY SIREN SOUNDS SO DIFFERENT
Attempt made to answer the qn. by: Deepak Sharma | Mohit Yadav
Introduction to CAST & CREW of the Presentation
• Siren
• Mic
• Data Acquisition System
• Open Room
EXPERIMENT SETUP
AID FOR ANALYSIS
• Audacity
• Wavesurfer
HUMAN HEARING PERCEPTION
LOUDNESS
SENSITIVITY TO HIGHER
FREQUENCIES
PITCH PERCEPTION
Place theory is a theory of hearing which states that our perception of sound depends on where each component frequency produces vibrations along the basilar membrane.
PITCH PERCEPTION
Place theory is a theory of hearing which states that our perception of sound depends on where each component frequency produces vibrations along the basilar membrane.
PITCH PERCEPTION
Place theory is a theory of hearing which states that our perception of sound depends on where each component frequency produces vibrations along the basilar membrane.
EXPERIMENTAL RESULTS
ANALYSIS OF A SIREN USING A SUBTLE
COMAPRISON
PITCH RESOLUTION
Place theory is a theory of hearing which states that our perception of sound depends on where each component frequency produces vibrations along the basilar membrane.
FOURIER TRANFORM
SPECTROGRAM
PITCH CONTOURS(Please see the cover
story for them)
REFERENCES
• http://hyperphysics.phy-astr.gsu.edu/hbase/sound/earsens.html• http://wikipedia.org • http://personal.cityu.edu.hk/~bsapplec/frequenc.htm• “Self Acoustics” by Beranek
Thank You