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1995 International Conference on Acoustics, Speech, and Signal Processing最新文献

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Language identification with phonological and lexical models 语音和词汇模式的语言识别
1995 International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1995-10-10 DOI: 10.1109/ICASSP.1995.479742
S. Kadambe, J. Hieronymus
{"title":"Language identification with phonological and lexical models","authors":"S. Kadambe, J. Hieronymus","doi":"10.1109/ICASSP.1995.479742","DOIUrl":"https://doi.org/10.1109/ICASSP.1995.479742","url":null,"abstract":"A task independent spoken language identification (LID) system which uses phonological and lexical models to distinguish languages is described. We demonstrate that the performance of an LID system which is based only on acoustic models can be improved by incorporating higher level linguistic knowledge in the form of trigram phonemotatics and lexical matching. We also present the performance of our LID system for four languages (English, German, Mandarin and Spanish).","PeriodicalId":300119,"journal":{"name":"1995 International Conference on Acoustics, Speech, and Signal Processing","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130117526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 35
Localization of multiple signals using subarrays data 使用子阵列数据的多信号定位
1995 International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1995-05-09 DOI: 10.1109/ICASSP.1995.478492
J. Sheinvald, M. Wax
{"title":"Localization of multiple signals using subarrays data","authors":"J. Sheinvald, M. Wax","doi":"10.1109/ICASSP.1995.478492","DOIUrl":"https://doi.org/10.1109/ICASSP.1995.478492","url":null,"abstract":"A new technique for localisation of multiple signals is presented. Unlike existing techniques which require that the whole array be sampled simultaneously and consequently require many receivers, our technique allows us to sample arbitrary subarrays sequentially and consequently significantly reduces the required number of receivers. The estimation method we use in conjunction with this sampling scheme is based on approximating the corresponding maximum likelihood estimator by a computationally simpler generalized least squares (GLS) estimator that is proved to be both consistent and efficient.","PeriodicalId":300119,"journal":{"name":"1995 International Conference on Acoustics, Speech, and Signal Processing","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115415730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Prosodic cues to word usage 韵律提示词的用法
1995 International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1995-05-09 DOI: 10.1109/ICASSP.1995.479674
Karen Ward, D. Novick
{"title":"Prosodic cues to word usage","authors":"Karen Ward, D. Novick","doi":"10.1109/ICASSP.1995.479674","DOIUrl":"https://doi.org/10.1109/ICASSP.1995.479674","url":null,"abstract":"In this study we examined prosodic characteristics of a word used in several distinct senses in a task-oriented corpus of spontaneous speech. We compared the pitch characteristics of the word \"right\" used in three different senses: as an acknowledgment, as a direction, and as an affirmative answer to a question. Significant differences in intonation for different classes of usage were found, although the differences are not reliable enough to allow systems to use prosody alone to distinguish between usages. These results suggest that pitch change as reported by a pitch tracker could serve as a confirming cue when analyzing ambiguous speech recognizer output, or could serve as input to a probabilistic parser to aid in disambiguating senses of homonyms.","PeriodicalId":300119,"journal":{"name":"1995 International Conference on Acoustics, Speech, and Signal Processing","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123047633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Ground penetrating radar tomography 探地雷达层析成像
1995 International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1995-05-09 DOI: 10.1109/ICASSP.1995.479430
J. Molyneux
{"title":"Ground penetrating radar tomography","authors":"J. Molyneux","doi":"10.1109/ICASSP.1995.479430","DOIUrl":"https://doi.org/10.1109/ICASSP.1995.479430","url":null,"abstract":"Presents a survey of theory and practice in tomographic imaging of subsurface features utilizing ground penetrating radar (GPR). The discussion includes: (i) A brief review of the equations governing radar scattering culminating in the Lippmann Schwinger (LS) equation. (ii) A summary of approximations often made in developing GPR imaging algorithms based on inversion of the LS equation: the scalar wave approximation, the two dimensional scattering model, and neglect of multiple scattering. (iii) A description of certain inversion algorithms used in GPR work. This includes a short discussion of ill-posed problems utilizing a one dimensional model equation, a review of difficulties characteristic of tomographic inversion, a summary of results based on linearized inversion methods such as Devaney's (1992) generalized projection slice theorem, and finally, a brief overview of the some numerical algorithms. (iv) A discussion of a field study using GPR to image shallow targets.","PeriodicalId":300119,"journal":{"name":"1995 International Conference on Acoustics, Speech, and Signal Processing","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124276270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
New split algorithms for linear least squares prediction filters with linear phase 线性相位线性最小二乘预测滤波器的新分割算法
1995 International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1995-05-09 DOI: 10.1109/ICASSP.1995.480439
Wen-Hsien Fang, Yang-Lung Hwang
{"title":"New split algorithms for linear least squares prediction filters with linear phase","authors":"Wen-Hsien Fang, Yang-Lung Hwang","doi":"10.1109/ICASSP.1995.480439","DOIUrl":"https://doi.org/10.1109/ICASSP.1995.480439","url":null,"abstract":"This paper is concerned with the development of new split algorithms for the design of linear least squares prediction filters with linear phase. The proposed fast algorithm, which fully expresses the inherent symmetry of the problem, requires lower computational complexity than other existing ones. Moreover, unlike other existing ones, the new recurrences involve only the order updates, which lend themselves to more efficient hardware implementations. For parallelization consideration, a new split Schur-like algorithm is also proposed to overcome the nonparallelizable inner product. Some numerical simulation results are provided to verify the proposed fast algorithms and highlight possible applications.","PeriodicalId":300119,"journal":{"name":"1995 International Conference on Acoustics, Speech, and Signal Processing","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124280339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Restoration of spiky signals: a new optimal estimate and a comparison 尖尖信号的恢复:一种新的最优估计和比较
1995 International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1995-05-09 DOI: 10.1109/ICASSP.1995.480314
C. Heinrich, J. Bercher, G. L. Besnerais, G. Demoment
{"title":"Restoration of spiky signals: a new optimal estimate and a comparison","authors":"C. Heinrich, J. Bercher, G. L. Besnerais, G. Demoment","doi":"10.1109/ICASSP.1995.480314","DOIUrl":"https://doi.org/10.1109/ICASSP.1995.480314","url":null,"abstract":"Discusses the restoration of spiky sequences distorted by a linear\u0000system and corrupted by additive noise. A (now) classical way of coping\u0000with this problem is to use a Bayesian approach with a\u0000Bernoulli-Gaussian (BG) prior model of the sequence. The authors refine\u0000this method using a Bernoulli-Gaussian plus Gaussian (BCG) prior model.\u0000This estimation method requires maximization of a posterior probability\u0000distribution, which cannot be performed optimally. Thus the authors\u0000propose a new non-Bayesian estimation scheme, derived from the\u0000Kullback-Leibler information or cross-entropy. This quite general\u0000method, called the maximum entropy on the mean method (MEMM) in Gamboa\u0000(1989) and le Besnerais (1995) is firmly based on convex analysis and\u0000yields a unique solution which can be efficiently calculated in\u0000practice, and which is, in this sense, truly optimal. As a conclusion,\u0000the authors present results obtained with both methods on a synthetic\u0000case","PeriodicalId":300119,"journal":{"name":"1995 International Conference on Acoustics, Speech, and Signal Processing","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117050756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
The combination of finite-length geometric equalization and bandwidth optimization for multicarrier transceivers 多载波收发器的有限长度几何均衡与带宽优化相结合
1995 International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1995-05-09 DOI: 10.1109/ICASSP.1995.480453
N. Al-Dhahir, J. Cioffi
{"title":"The combination of finite-length geometric equalization and bandwidth optimization for multicarrier transceivers","authors":"N. Al-Dhahir, J. Cioffi","doi":"10.1109/ICASSP.1995.480453","DOIUrl":"https://doi.org/10.1109/ICASSP.1995.480453","url":null,"abstract":"A bandwidth-optimized and equalized multicarrier transceiver that achieves near-optimum performance at a practical complexity level is described. The equalizer used is a relatively short FIR filter whose taps and delay are set to optimize the performance of the multicarrier transceiver. Simulation results on a set of carrier-serving-area subscriber loops are also presented to demonstrate the separate and joint effects of bandwidth optimization and equalization on performance. Finally, the intriguing idea of using a pole-zero equalizer to achieve the high performance of infinite-complexity FIR equalizers at a much lower implementation cost is investigated.","PeriodicalId":300119,"journal":{"name":"1995 International Conference on Acoustics, Speech, and Signal Processing","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117137995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
An M-band, 2-dimensional translation-invariant wavelet transform and applications 一种m波段二维平移不变小波变换及其应用
1995 International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1995-05-09 DOI: 10.1109/ICASSP.1995.480421
S. D. Marco, P. Heller, J. Weiss
{"title":"An M-band, 2-dimensional translation-invariant wavelet transform and applications","authors":"S. D. Marco, P. Heller, J. Weiss","doi":"10.1109/ICASSP.1995.480421","DOIUrl":"https://doi.org/10.1109/ICASSP.1995.480421","url":null,"abstract":"This paper develops a two-dimensional M-band translation-invariant wavelet transform (2-D MTI). Use of the MTI overcomes the shift-variance of the wavelet transform by applying a cost function over M shifts of the input signal. The new transform is proven to be translation-invariant. Use of M-band wavelets enables a finer frequency partitioning and greater energy compaction in the transform representation. Examples are presented which show that the translation-invariant transforms provide superior energy concentration compared to the corresponding nominal wavelet transforms. Examples are also presented comparing the energy concentration capability of M-band wavelets and the modulated lapped transform (MLT). We explored the MTI as a tool for image processing by using it to represent several different images.","PeriodicalId":300119,"journal":{"name":"1995 International Conference on Acoustics, Speech, and Signal Processing","volume":"13 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120859752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
A self-calibration algorithm for cyclostationary signals and its uniqueness analysis 一种循环平稳信号的自校正算法及其唯一性分析
1995 International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1995-05-09 DOI: 10.1109/ICASSP.1995.480581
P. Yip, Yifeng Zhou
{"title":"A self-calibration algorithm for cyclostationary signals and its uniqueness analysis","authors":"P. Yip, Yifeng Zhou","doi":"10.1109/ICASSP.1995.480581","DOIUrl":"https://doi.org/10.1109/ICASSP.1995.480581","url":null,"abstract":"A self-calibration DOA estimation algorithm for cyclostationary source signals is presented in which the effects of the sensor gain and phase shift uncertainty have been eliminated. The uniqueness conditions and the asymptotic consistency of the estimates are discussed. An alternating projecting optimization algorithm is provided which lessens the computational load involved in the nonlinear multivariate optimization problem. A numerical example is presented to show the effectiveness of the algorithm.","PeriodicalId":300119,"journal":{"name":"1995 International Conference on Acoustics, Speech, and Signal Processing","volume":"16 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120931921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Coherence effects of the interference on the performance of optimum/adaptive beamformer 干扰对最佳/自适应波束形成器性能的相干性影响
1995 International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1995-05-09 DOI: 10.1109/ICASSP.1995.479773
G. Serebryakov, D. V. Sidorovich, C. Mecklenbräuker
{"title":"Coherence effects of the interference on the performance of optimum/adaptive beamformer","authors":"G. Serebryakov, D. V. Sidorovich, C. Mecklenbräuker","doi":"10.1109/ICASSP.1995.479773","DOIUrl":"https://doi.org/10.1109/ICASSP.1995.479773","url":null,"abstract":"We present an analysis of the interference coherence effects on the performance of an antenna array processor, which maximizes the output signal-to-noise ratio (SNR) for a coherent wave. The analytical expression for the optimal weight vector, directional pattern and output SNR is derived as a function of the coherence coefficient, interference power and parameters of the adaptive processor. We show how different models of interference coherence affect the array performance. Finally, to illustrate the theory, several numerical results are given.","PeriodicalId":300119,"journal":{"name":"1995 International Conference on Acoustics, Speech, and Signal Processing","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121079700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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