NOISE ESTIMATION USING STANDARD DEVIATION OF THE FREQUENCY MAGNITUDE SPECTRUM FOR MIXED NON-STATIONARY NOISE
Noise estimation and suppression is very important for improving the quality of speech signal. Noises exist in almost all places. In reality, more than one noise degrades the speech signal. It is hard to find and supress various types of noise that affect the speech quality. This paper proposed a me...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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ICT Academy of Tamil Nadu
2015-12-01
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| Series: | ICTACT Journal on Communication Technology |
| Subjects: | |
| Online Access: | http://ictactjournals.in/paper/IJCT_V6_I4_pp_8_1218_1222.pdf |
| _version_ | 1811192396308807680 |
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| author | A. Indumathi E. Chandra |
| author_facet | A. Indumathi E. Chandra |
| author_sort | A. Indumathi |
| collection | DOAJ |
| description | Noise estimation and suppression is very important for improving the quality of speech signal. Noises exist in almost all places. In reality, more than one noise degrades the speech signal. It is hard to find and supress various types of noise that affect the speech quality. This paper proposed a method for noise estimation of mixed non-stationary noisy speech signal. This method uses Spectral properties of the noisy speech signal to detect the frequency regions of noise signal. Highest frequency of speech signal is calculated and it is considered as the threshold value for separating noise signal and clean speech signal. Using Spectral subtraction, Standard deviation of noise spectrum is subtracted with noisy spectrum to acquire enhanced speech signal. Performance of the method is evaluated using SNR and Spectrogram. The main focus of this paper is to propose an independent method which estimates the noise of any type and nature. |
| first_indexed | 2024-04-11T23:52:02Z |
| format | Article |
| id | doaj.art-8fc3543e32a34f8481a2b0128265aad5 |
| institution | Directory Open Access Journal |
| issn | 0976-0091 2229-6948 |
| language | English |
| last_indexed | 2024-04-11T23:52:02Z |
| publishDate | 2015-12-01 |
| publisher | ICT Academy of Tamil Nadu |
| record_format | Article |
| series | ICTACT Journal on Communication Technology |
| spelling | doaj.art-8fc3543e32a34f8481a2b0128265aad52022-12-22T03:56:28ZengICT Academy of Tamil NaduICTACT Journal on Communication Technology0976-00912229-69482015-12-016412181222NOISE ESTIMATION USING STANDARD DEVIATION OF THE FREQUENCY MAGNITUDE SPECTRUM FOR MIXED NON-STATIONARY NOISEA. Indumathi0E. Chandra1Dr. SNS Rajalakshmi College of Arts and Science, IndiaBharathiar University, IndiaNoise estimation and suppression is very important for improving the quality of speech signal. Noises exist in almost all places. In reality, more than one noise degrades the speech signal. It is hard to find and supress various types of noise that affect the speech quality. This paper proposed a method for noise estimation of mixed non-stationary noisy speech signal. This method uses Spectral properties of the noisy speech signal to detect the frequency regions of noise signal. Highest frequency of speech signal is calculated and it is considered as the threshold value for separating noise signal and clean speech signal. Using Spectral subtraction, Standard deviation of noise spectrum is subtracted with noisy spectrum to acquire enhanced speech signal. Performance of the method is evaluated using SNR and Spectrogram. The main focus of this paper is to propose an independent method which estimates the noise of any type and nature.http://ictactjournals.in/paper/IJCT_V6_I4_pp_8_1218_1222.pdfNoise EstimationSpectral SubtractionStandard DeviationSNRSpectrogram |
| spellingShingle | A. Indumathi E. Chandra NOISE ESTIMATION USING STANDARD DEVIATION OF THE FREQUENCY MAGNITUDE SPECTRUM FOR MIXED NON-STATIONARY NOISE ICTACT Journal on Communication Technology Noise Estimation Spectral Subtraction Standard Deviation SNR Spectrogram |
| title | NOISE ESTIMATION USING STANDARD DEVIATION OF THE FREQUENCY MAGNITUDE SPECTRUM FOR MIXED NON-STATIONARY NOISE |
| title_full | NOISE ESTIMATION USING STANDARD DEVIATION OF THE FREQUENCY MAGNITUDE SPECTRUM FOR MIXED NON-STATIONARY NOISE |
| title_fullStr | NOISE ESTIMATION USING STANDARD DEVIATION OF THE FREQUENCY MAGNITUDE SPECTRUM FOR MIXED NON-STATIONARY NOISE |
| title_full_unstemmed | NOISE ESTIMATION USING STANDARD DEVIATION OF THE FREQUENCY MAGNITUDE SPECTRUM FOR MIXED NON-STATIONARY NOISE |
| title_short | NOISE ESTIMATION USING STANDARD DEVIATION OF THE FREQUENCY MAGNITUDE SPECTRUM FOR MIXED NON-STATIONARY NOISE |
| title_sort | noise estimation using standard deviation of the frequency magnitude spectrum for mixed non stationary noise |
| topic | Noise Estimation Spectral Subtraction Standard Deviation SNR Spectrogram |
| url | http://ictactjournals.in/paper/IJCT_V6_I4_pp_8_1218_1222.pdf |
| work_keys_str_mv | AT aindumathi noiseestimationusingstandarddeviationofthefrequencymagnitudespectrumformixednonstationarynoise AT echandra noiseestimationusingstandarddeviationofthefrequencymagnitudespectrumformixednonstationarynoise |