Speech enhancement on smartphone voice recording

8th International Conference on Physics and its Applications

Atmaja, Bagus Tris^1 ; Farid, Mifta Nur^1 ; Arifianto, Dhany^1

Dept. of Engineering Physics, Faculty of Industrial Technology, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya

60111, Indonesia^1

关键词: MMSE estimators;    Nonnegative matrix factorization;    Spectral amplitude;    Spectral subtractions;    Speech enhancement algorithm;    Speech signals;    Two microphones;    Wiener filtering;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/776/1/012072/pdf
DOI  :  10.1088/1742-6596/776/1/012072

来源: IOP

【 摘 要 】

Speech enhancement is challenging task in audio signal processing to enhance the quality of targeted speech signal while suppress other noises. In the beginning, the speech enhancement algorithm growth rapidly from spectral subtraction, Wiener filtering, spectral amplitude MMSE estimator to Non-negative Matrix Factorization (NMF). Smartphone as revolutionary device now is being used in all aspect of life including journalism; personally and professionally. Although many smartphones have two microphones (main and rear) the only main microphone is widely used for voice recording. This is why the NMF algorithm widely used for this purpose of speech enhancement. This paper evaluate speech enhancement on smartphone voice recording by using some algorithms mentioned previously. We also extend the NMF algorithm to Kulback-Leibler NMF with supervised separation. The last algorithm shows improved result compared to others by spectrogram and PESQ score evaluation.