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conclusion and references
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Conclusion and references:

 

Three methods for pitch determination, autocorrelation method, cepstrum method and LPC method were examined. The first two methods obtained the similar pitch frequency, whereas, the LPC method obtained a different pitch frequency. The LPC method would be used to detect not only pitch but also formants.

 

 

References:

[1] http://filmsound.org/articles/ninecomponents/9components.htm

[2] http://www.ndt-ed.org/EducationResources/HighSchool/Sound/components.htm

[3] http://hyperphysics.phy-astr.gsu.edu/hbase/sound/pitch.html

[4] http://en.wikipedia.org/wiki/Ultrasound

[5] http://en.wikipedia.org/wiki/Infrasound

[6] http://sound.eti.pg.gda.pl/student/eim/synteza/leszczyna/index_ang.htm

[7] http://en.wikipedia.org/wiki/Pitch_detection_algorithm

[8] http://www.cs.uregina.ca/Research/Techreports/2003-06.pdf

[9] Http___note.sonots.com__plugin=attach&refer=SciSoftware_Pitch&openfile=pitch

[10] http://www.ncbi.nlm.nih.gov/pubmed/11572360

[11] http://www.cc.gatech.edu/cpl/pubs/pui97/audio.html

[12] http://www.google.co.in/url?sa=t&source=web&cd=4&ved=0CDMQFjAD&url=http%3A%2F%2Fieeex plore.ieee.org%2Fiel4%2F89%2F8806%2F00388147.pdf%3Farnumber%3D388147&ei=OEOrTZepHdRrQfLiJmnCA&usg=AFQjCNHiG6Ph4jawhQrwREfclzrmCEvBrQ

[13] http://www.ijicic.org/nlpke08-09-1.pdf