Septiansyah, Hasbi (2015) Implementasi metode forensik suara pria menggunakan teknik voice recognize untuk analisis kemiripan suara pada media alat rekam telepon selular. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pada kasus-kasus tertentu, rekaman suara pembicaraan
merupakan barang bukti digital yang memiliki peranan sangat
penting untuk memberikan fakta-fakta yang diperlukan dalam
proses penyidangan dan juga menunjukkan keterlibatan
seseorang dengan kasus yang sedang di investigasi. Tahun 2009
Mabes Polri melaporkan sebanyak 278.537 orang pelaku tindak
pidana, sebanyak 270.844 orang (97,2%) adalah laki-laki dan
7.683 orang lainnya (2,8%) adalah perempuan. Diperkirakan
periode 2009-2014 sebanyak >85% pelaku tindak kriminalitas
masih di dominasi oleh laki-laki.
Bukti rekaman suara dapat menunjukkan identitas dari orang
yang suaranya terekam pada barang bukti tersebut dengan cara
melakukan pemeriksaan forensika audio untuk voice recognition
dengan metode komparasi, yaitu membandingkan suara barang
bukti dengan suara yang direkam sebagai pembanding. Teori
voice recognition tersebut menganalisis statistik pitch, formant,
bandwith dan spectogram. Jika hasil voice recognition
menunjukkan bahwa suara percakapan yang ada di dalam
barang bukti sama identik dengan suara pelaku, maka dapat
disimpulkan bahwa suara percakapan yang ada di dalam
rekaman barang bukti adalah suara milik pelaku sehingga alat rekam suara tersebut dapat digunakan sebagai bukti yang kuat di
pengadilan.
Hasil dari penerapan teknik forensika digital dalam penelitian
eksperimen menggunakan bantuan aplikasi Praat adalah untuk
menentukan kemiripan suara subjek dengan barang bukti
berdasarkan hasil Pitch, Formant dan Spectogram.
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In the specific cases, the recording of conversations is a digital
evidence which has a very important role to provide the necessary
facts in the trial process and also indicate the involvement of a
person within a case that is being investigated. In 2009 as many
as 278 537 the perpetrators of criminal acts which reported by
Police Headquarters, which there are 270 844 people (97.2%)
were male and 7683 others (2.8%) were women. It is estimated
that 2009-2014 period, >85% the perpetrators of crime would
still dominated by men.
Evidence of the sound recording can show the identity of the
person whose voice is recorded on the evidence by carrying out of
checks audio forensics for voice recognition by comparative
method, which compares the sound of the evidence (unknown
samples) with a recorded sound as a comparison (known
samples). The voice recognition theory statistical analyzes pitch,
formant, bandwidth and spectogram. If the voice recognition
results indicate that the voice conversation in evidence similar
with voice actors, it can be concluded that the voice conversation
in the recording of evidence is the voice of the perpetrator so that
the voice recorder can be used as strong evidence in court , The result of applying the application of digital forensics
techniques in research experiments which use Praat application
assistance is for determine which actors has the resemblance
voice with the evidence based on the result of Pitch, Formant, and
Spectogram.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSSI 006.454 Sep i |
| Uncontrolled Keywords: | Forensika digital, audio forensic, voice recognition, suara pria |
| Subjects: | Q Science > QA Mathematics > QA76 Computer software |
| Divisions: | Faculty of Information Technology > Information System > 57201-(S1) Undergraduate Thesis |
| Depositing User: | - Taufiq Rahmanu |
| Date Deposited: | 05 Dec 2019 04:53 |
| Last Modified: | 05 Dec 2019 04:53 |
| URI: | http://repository.its.ac.id/id/eprint/72218 |
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