1. Universitas Islam Indonesia
Spectrum Identification of Peking as a Part of Traditional Instrument of Gamelan
Muhammad Arif Maula
Electrical Engineering
Universitas Islam Indonesia

2. outline
Introduction
Method and result analysis
Conclusion

3. 1
Introduction

4. What is gamelan?
What Is Peking?

5. How about Frequency Standart?
How about Tunning System?
How about The Gamelan in Future?

6. Purpose of This research
Get the dominant frequency and compiler frequency which can be made into a database for subsequent use as a differentiator with other musical instruments.

7. Method dan Result Analysis2
Method dan Result Analysis

8. Method

9. Tools Needed

10. Spectrum Frequency Analysis

11. Signal Processing in Matlab
FFT
Time Domain
Frekuensi Domain

12. Dominant Frequency Table
Dominant Frequency Data Peking Slendro and Pelog
Instrument 1
Instrument 2
Instrument 3
Slendro 1
Pelog 1
Slendro 2
Pelog 2
Slendro 3
Pelog 3
Bars
Freq (Hz) 1
1083
1151
1082
1178
1103
1102 2
1250
1244
1237
1282
1267
1177 3
1432
1333
1400
1469
1276 5
1664 4
1573
1642
1640
1686
1515 6
1902
1687
1922
1778
1925
1603 i
2212
1817 I
2155
1865
2238
1714 7
1985
2118
1868

13. Threshold -55 dB

14. Compiler Frequency Table
Instrumen 1
Instrumen 2
Instrumen 3
slendro 1
Normalize amplitude
pelog 1
slendro 2
pelog 2
slendro 3
pelog 3
Bars
Frekuensi f0 1
1083 Hz
0 dB
1151 Hz
1081 Hz
1178 Hz
1103 Hz
1102 Hz f1
2911 Hz dB
2951 Hz dB
3015 Hz dB f2
3212 Hz dB
5287 Hz dB f3
5486 Hz dB 2
1250 Hz
1244 Hz
1237 Hz
1282 Hz
1276 Hz
1177 Hz
3480 Hz dB
3134 Hz dB
5509 Hz dB 3
1432 Hz
1333 Hz
1400 Hz
1469 Hz
4067 Hz dB
3524 Hz dB
3540 Hz dB 5
1664 Hz 4
1573 Hz
1641 Hz
1640 Hz
1686 Hz
1515 Hz
4376 Hz dB
1470 Hz dB
3991 Hz dB 6
1902 Hz
1687 Hz
1922 Hz
1778 Hz
1925 Hz
1603 Hz
160 Hz dB
2692 Hz dB
4364 Hz dB
3484 Hz dB
3449 Hz
4275 Hz dB f4
8872 Hz dB i
2212 Hz
1817 Hz
2156 Hz
1865 Hz
2238 Hz
1714 Hz
5641 Hz dB
3485 Hz dB
3657 Hz
110 Hz dB
161 Hz dB
8913 Hz dB
2389 Hz dB
1926 Hz dB
3700 Hz dB 7
1985 Hz
2118 Hz
1868 Hz
982 Hz dB
78 Hz dB
3368 Hz dB
3557 Hz

15. Frequency Range Peking Slendro and Pelog
Bars
max
min
Difference 1
1103 Hz
1082 Hz
21 Hz
1178 Hz
1102 Hz
76 Hz 2
1267 Hz
1237 Hz
30 Hz
1282 Hz
1177 Hz
105 Hz 3
1469 Hz
1432 Hz
37 Hz
1400 Hz
1276 Hz
124 Hz 5
1686 Hz
1642 Hz
44 Hz 4
1640 Hz
1515 Hz
125 Hz 6
1925 Hz
1902 Hz
23 Hz
1778 Hz
1603 Hz
175 Hz i
2238 Hz
2155 Hz
83 Hz
1865 Hz
1714 Hz
151 Hz 7
2118 Hz
1868 Hz
250 Hz
Frequency Average
40 Hz
144 Hz

16. Difference Frequency Between Bars
slendro 1
slendro 2
slendro3
Bars
pelog1
pelog2
pelog3
frequency
cent
1 to 2
167 Hz
248
155 Hz
232
164 Hz
240
93 Hz
135
104 Hz
146
75 Hz
114
2 to 3
182 Hz
235
195 Hz
253
202 Hz
256
89 Hz
120
118 Hz
152
99 Hz
140
3 to 5
232 Hz
260
210 Hz
237
217 Hz
239
3 to 4
240 Hz
287
274
239 Hz
297
5 to 6
238 Hz
231
280 Hz
273
230
4 to 5
114 Hz
121
138 Hz
88 Hz 98
6 to I
310 Hz
261
233 Hz
198
313 Hz
130 Hz
129
87 Hz 83
111 Hz
116
6 to 7
168 Hz
153
253 Hz
220
154 Hz
149
Average Hz Hz Hz
Average  Hz Hz Hz

17. Testing Range Frequency of Peking Slendro and Pelog that is in Gamelan

18. Before Filtering

19. After filtering

20. 3
conclusion

21. In general there are two types of peking in Yogyakarta, namely peking slendro and pelog. Peking slendro has a frequency range between 1082 Hz Hz and pelog peking has a frequency range between 1102 Hz Hz.
The dominant frequency of Peking Slendro in Yogyakarta is in strips 1, Hz, bars 2, Hz, bars 3, Hz, bars 5, Hz, bars 6, Hz, bars i, Hz. As for Peking Pelog is on the slats 1, Hz, bars 2, Hz, bars 3, Hz, bars 4, Hz, bars 5, Hz, bars 6, Hz, bar 7, Hz.
The variation of the compiler frequency on each bar of the peking instrument is one to five variations of frequency on each bar with intervals that can not be formulated.
The interval on the slendro tone has an average of about 240 cent and is according to what Dr. Jaap Kunts and for pelog tones have different tone intervals on each tone.
The database that has been created can be used as a differentiator of peking instruments with other instruments by looking at the frequency areas.

22. Muhammad Arif Maula arivemolla@gmail.com
THANKS!
Muhammad Arif Maula