Page 62 - Conference Book The 3rd IConVET "Future of TVET Graduates: Developing Talent for Industry 4.0 and The New Normal"

The 3 International Conference
rd
on Vocational Education and Technology (IConVET)
Universitas Pendidikan Ganesha - Bali | 7 November, 2020
th
RINDIK ROD SOUND SEPARATION WITH SPECTRAL
SUBTRACTION METHOD

Y Christian , I D M B A Darmawan 2*
1

1,2 Program Studi Teknik Informatika, Fakultas
Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana, Bali,
Indonesia

Email: dewabayu@unud.ac.id

Abstract. Rindik is a traditional music instrument originated from Bali that
consists of 11 bamboo rods and played by a person hitting the bamboo rod
with a rubber mallet in each player’s hands. Documentation of Rindik songs
with automatic music transcription work is easier to do by separating it first.
To overcome that challenge, two Rindik rods sounds are separated using the
spectral subtraction method. The noise spectrum is the spectrum of a single
rod sound that needs to be muffled. The resulting audio is the other single
rod sound and vice versa to get both single rod sound. The data consists of
single rod hit sound recordings of 11 single rod sound and 55 combinations
of two-rods sounds that being hit at the same time. The performance of the
spectral subtraction method in separating Rindik sound was measured with
MSE and SIR and also heard the noise exists in the separated audio signal.
The experiment demonstrates a state-of-the-art performance consists of
spectral subtraction with squared noise average magnitude with average
MSE value 0.0130 and average SIR value 55.68 dB.

| IConVET 2020 | 62

https://conference.undiksha.ac.id/iconvet/ | 62 |