Artikel Jurnal :: Kembali

Artikel Jurnal :: Kembali

Traditional psychoacoustic model and daubechies wavelets for enhanced speech coder performance

Rajeshree D. Raut (Faculty of Engineering, Universitas Indonesia, 2015)

 Abstrak

Speech compression techniques based on traditional psychoacoustic model have been proposed by many researchers. We have suggested Discrete Wavelet Transform (DWT) supported by the same psychoacoustic model for speech compression. This paper presents a traditional psychoacoustic model to process equal partitions of total bandwidth spectrum of audio signal frequency to reduce redundancy by filtering out the tones and noise masker in speech signal. Here, the uniform filter banks are used for efficient computations and selection of appropriate threshold level for better compression of Discrete Wavelet Transformed coefficients. Daubechies wavelet filter bank is a nonlinear and asymmetric wavelet filter bank. It is equivalent to cochlear filter of human hearing system. The resemblance between Daubechies Filter Bank and our hearing system is used to develop the novel speech coder. Results have shown better performance in terms of compression factor (CF) and Signal-to-Noise Ratio (SNR) as compare to the methods suggested earlier.

 Metadata

Jenis Koleksi : Artikel Jurnal
No. Panggil : UI-IJTECH 6:2 (2015)
Entri utama-Nama orang :
Subjek :
Penerbitan : Depok: Faculty of Engineering, Universitas Indonesia, 2015
Sumber Pengatalogan : LibUI eng rda
ISSN : 20869614
Majalah/Jurnal : International Journal of Technology
Volume : Vol. 6, No. 2, April 2015: Hal. 190-197
Tipe Konten : text
Tipe Media : unmediated
Tipe Carrier : volume
Akses Elektronik : https://doi.org/10.14716/ijtech.v6i2.761
Institusi Pemilik : Universitas Indonesia
Lokasi : Perpustakaan UI, Lantai 4 R. Koleksi Jurnal
  • Ketersediaan
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No. Panggil No. Barkod Ketersediaan
UI-IJTECH 6:2 (2015) 08-23-82910509 TERSEDIA
Ulasan:
Tidak ada ulasan pada koleksi ini: 9999920532480
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