id	domain	url
flr-371	doi.org	https://doi.org/10.14786/flr.v6i3.372
flr-371	www.moodmetric.com	http://www.moodmetric.com
flr-371	www.firstbeat.com	https://www.firstbeat.com/en/
flr-371	science.howstuffworks.com	http://science.howstuffworks.com/question124.htm
flr-371	www.merriamwebster.com	https://www.merriamwebster.com/dictionary/frequency#medicaldictionary
flr-371	www.researchgate.net	https://www.researchgate.net/post/what_is_pitch_or_pitch_frequency_of_a_speech_signal
flr-371	www.merriam-webster.com	https://www.merriam-webster.com/dictionary/hertz#medicaldictionary
flr-371	hyperphysics.phy-astr.gsu.edu	http://hyperphysics.phy-astr.gsu.edu/hbase/sound/loud.html
flr-371	www.merriam-webster.com	https://www.merriam-webster.com/dictionary/pitch#medicaldictionary
flr-371	www.merriam-webster.com	https://www.merriam-webster.com/dictionary/prosody
flr-371	grammar.about.com	http://grammar.about.com/od/pq/g/prosodyterm.htm
flr-371	www.merriam-webster.com	https://www.merriam-webster.com/dictionary/semi-tone