Abstract:
A study on the human voice spectrum is analyzed based on ethnic and age groups of
children 8-11 years old. Recording is done with the human voice by using a microphone
and a computer equipped with a software praat instead of the spectrum analyzer. The
recorded sound spectrum determined a fundamental frequency (pitch) and formant.
Sampling was done by recording the sound from each tribe of Batak, Malay, Minang, and
Java, which consists of 4 males and 4 females were grouped into children aged 8-11 years.
Each voice read three pieces word is "Red and White", "Indonesia" and "Youth Pledge".
The results showed that the tribe (ethnic) Batak in males has a value of fundamental
frequency averages higher at 231-282 Hz than the Malay, Minang, and Java has a
fundamental frequency value of the average 241-252 Hz, 150-214 Hz, and 134 Hz-170 Hz.
The value of the average fundamental frequency of each tribe for females, in which the
value of highest frequency contained in Malay is 225-235 Hz compared to ethnic Minang,
Javanese and Batak which has an average fundamental frequency are 186-240 Hz, 148-186
Hz and 125-186 Hz. The differences in the fundamental frequency caused by factors based
on gender, age, condition of a person, the tribe and the condition of the room. The formant
value rose from the first formant (F1) to the third formant (F3). Average formant values
F1, F2, and F3 males lower compared to females. Formant value of the average F1, F2 and
F3 boys 2116.387 Hz, 2157.046 Hz and females
