Jurnal Nasional Teknologi Informasi dan Aplikasinya
Vol. 3 No. 4 (2025): JNATIA Vol. 3, No. 4, Agustus 2025

Identifikasi dan Klasifikasi Suara Vokal Menggunakan Metode Fast Fourier Transform

I Ketut Manik Ambarawan (Universitas Udayana)
I Gusti Agung Gede Arya Kadyanan (Universitas Udayana)



Article Info

Publish Date
01 Aug 2025

Abstract

This research develops a vocal range identification and classification system using frequency spectrum analysis and Fast Fourier Transform (FFT) algorithm. The system addresses the need for an accessible vocal range identification tool for amateur singers and the general public without formal musical training. The proposed system combines real-time audio recording capabilities with audio file processing, implementing pitch identification through FFT analysis and windowing functions. The system features two input methods: real-time recording and audio file upload supporting various formats (MP3, WAV, FLAC, AAC, OGG, M4A). Using PyAudio for real-time processing and Librosa for file analysis, the system accurately identifies fundamental frequencies within the human vocal range (80-1100 Hz) and automatically classifies voice types (Bass, Baritone, Tenor, Alto, Mezzo-soprano, Soprano). Testing demonstrates effective frequency identification with pitch conversion accuracy ranging from 95.7% to 98.8% and voice type classification achieving 81.2% accuracy. The system provides an efficient solution for vocal range analysis with low computational complexity and real-time processing capabilities.

Copyrights © 2025






Journal Info

Abbrev

jnatia

Publisher

Subject

Computer Science & IT Engineering

Description

JNATIA (Jurnal Nasional Teknologi Informasi dan Aplikasinya) adalah jurnal yang berfokus pada teori, praktik, dan metodologi semua aspek teknologi di bidang ilmu komputer, informatika dan teknik, serta ide-ide produktif dan inovatif terkait teknologi baru dan teknologi informasi. Jurnal ini memuat ...