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| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
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Boll, Steven F. | Application of the saber method for improved spectral analysis of noisy speech | A stand alone noise suppression algorithm is described for reducing the spectral effects of acoustically added noise in speech. A fundamental result is developed which shows that the spectral magnitude of speech plus noise can be effectively approximated as the sum of magnitudes of speech and noise.... | Noise suppression algorithm; SABER method | 1977 |
| 2 |
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Boll, Steven F. | Improving linear prediction analysis of noisy speech by predictive noise cancellation | The analysis of speech using Linear Prediction is reformulated to account for the presence of acoustically added noise and a technique is presented for reducing its effect on parameter estimation. The method, called Predictive Noise Cancellation (PNC), modifies the noisy speech autocorrelations ... | Linear prediction; Predictive Noise Cancellation; Noisy speech; Sppech analysis | 1977 |
| 3 |
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Boll, Steven F. | Noise suppression methods for robust speech processing (1 April 1979- 30 Sept. 1979) | Robust speech processing in practical operating environments requires effective environmental and processor noise suppression. This report describes the technical findings and accomplishments during this reporting period for the research program funded to develop real-time, compressed speech analysi... | Noise suppression; Signal contamination; Compressed speech analysis-synthesis algorithms | 1979 |
| 4 |
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Boll, Steven F. | Noise suppression methods for robust speech processing (1 Oct. 1976 - 31 March 1977) | To develop robust speech processes, based upon the integration of digital noise suppression methods and narrow band speech analysis-synthesis methods, capable of realizing practical, real time methods for effectively processing speech recorded in practical operating environments. | Digital noise suppression | 1977 |
| 5 |
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Boll, Steven F.; Timothy, LaMar K. | Noise suppression methods for robust speech processing (1 Oct. 1978- 31 Mar. 1979) | Robust speech processing in practical operating environments requires effective environmental and processor noise suppression. This report describes the technical findings and accomplishments during this reporting period for the research program funded to develop real time, compressed speech analysi... | Noise suppression; Signal contamination; Compressed speech analysis-synthesis algorithms | 1979 |
| 6 |
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Boll, Steven F.; Done, William John | Noise suppression methods for robust speech processing (1 Oct. 1978- 31 Mar. 1981) | Robust speech processing in practical operating environments requires effective environmental and processor noise suppression. This report describes the technical findings and accomplishments during this reporting period for period for research program funded to develop real time, compressed speech ... | Noise suppression; Compressed speech analysis-synthesis algorithms; Signal contamination | 1978 |
| 7 |
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Boll, Steven F. | Noise suppression methods for robust speech processing (1 Oct. 1979- 31 Mar. 1980) | Robust speech processing in practical operating environments requires effective environmental and processor noise suppression. This report describes the technical findings and accomplishments during this reporting period for the research program funded to develop real time, compressed speech analysi... | Noise suppression; Compressed speech analysis-synthesis algorithms; Signal contamination | 1980 |
| 8 |
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Boll, Steven F. | Selected methods for improving synthesis speech quality using linear predictive coding: system description, coefficient smoothing and streak | This report develops two generalizations of the standard Linear Predictive Coding (LPC) implementation of a narrow band speech compression system. The purpose of each method is to improve the speech quality that is available from a standard LPC system. | Linear Predictive Coding; LPC; Speech compression system; Pitch excited system | 1974 |
| 9 |
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Boll, Steven F. | Suppression of acoustic noise in speech using spectral subtraction | A stand alone noise suppression algorithm is presented for reducing the spectral effects of acoustically added noise in speech. Effective performance of digital speech processors operating in practical environments may require suppression of noise from the digital waveform. Spectral subtraction offe... | Suppression; acoustic noise; noise suppression algorithm; digital speech processors; Spectral subtraction | 1979 |
| 10 |
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Boll, Steven F. | Suppression of acoustic noise in speech using two microphone adaptive noise cancellation | Acoustic noise with energy greater or equal to the speech is suppressed by filtering a separately recorded correlated noise signal and subtracting it from the speech waveform. This approach was investigated to determine the degree of noise suppression possible using an external correlated input. The... | Suppression; acoustic noise; adaptive noise cancellation | 1979 |
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