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Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '76.

Date 12-14 April 1976

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Displaying Results 1 - 25 of 226
  • [Front cover and table of contents]

    Publication Year: 1976 , Page(s): 0
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    Freely Available from IEEE
  • A hardware vocal source simulator

    Publication Year: 1976 , Page(s): 51 - 54
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (211 KB)  

    Speech synthesis has been performed utilizing different devices, Roughly speaking, these devices are composed of a vocal tract transfer function simulator and a glottal waveform simulator. Of course, this description is very crude and in actual realizations some features which belong to one part may be taken into account by the simulation of the other one.For instance, in mathematical analyses, th... View full abstract»

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  • Analysis and areas modelling of Nasalised speech by a multivariable identification technique

    Publication Year: 1976 , Page(s): 80
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (6 KB)  

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  • 600 bps voice digitizer

    Publication Year: 1976 , Page(s): 91 - 94
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (102 KB)  

    This paper presents an analysis/synthesis method whereby speech may be transmitted at 600 bps, a data rate which is less than 1 percent of the PCM transmission rate for original speech sounds. This R&D effort was motivated by the pressing need for very-low-data rate (VLDR) voice digitizers to meet some of the current military voice communication requirements. The use of a VLDR voice digitizer make... View full abstract»

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  • Non-linear effects in direct radiator loudspeaker systems

    Publication Year: 1976 , Page(s): 409
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    Summary form only given, as follows. The theory developed by Small points out the need for determining the displacement volume of a loudspeaker driver. Methods I or measuring displacement volume will be given. The contribution from suspension non-linearity will be shown to be of minor importance. Non-linearity in the driving motor will be related to the resulting amplitude modulation distortion. View full abstract»

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  • Filter structures which minimize roundoff noise in fixed point digital filters

    Publication Year: 1976 , Page(s): 505 - 508
    Cited by:  Papers (10)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (83 KB)  

    We have outlined a synthesis procedure which minimizes the output noise in cascade and parallel connections of second-order sections caused by roundoff of internal storage registers. Theorem 1 characterizes the optimal fi Iter and dictates the synthesis procedure. The output noise is made up of two terms. The dominant noise term for block optimal fi lters is independent of bandwidth unl ike the us... View full abstract»

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  • Distortion in audio amplifiers

    Publication Year: 1976 , Page(s): 542
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    Summary form only, as given. The evolution of amplifiers will be put in perspective by starting with vacuum valve designs. The cost of gain stages kept valve amplifiers out of transient interncdulation distortion. The low cost of gain stages, and later of integrated circuit operational amplifiers, led to the use of large amounts of negative voltage feedback to reduce The:enin's impedance and disto... View full abstract»

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  • On the audibility of distortion

    Publication Year: 1976 , Page(s): 547
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    Summary form only given, as follows. The distortion characteristics of microphones, recorders, amplifiers, and, loudspeakers will be cross-compared to arrive at a distortion budget. Better valve and, transistor anDlifiers make a negligible contribution to this budget. Loudspeakers can be (but usually are not) better than the tape recorder and this looks like the frontier for distortion reduction. ... View full abstract»

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  • Protocol for prescriptive fitting of a wearable master hearing aid

    Publication Year: 1976 , Page(s): 583 - 585
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  • The programmable array processor

    Publication Year: 1976 , Page(s): 640 - 643
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (66 KB)  

    This work describes the Aeronutronic Ford Programmable Array Processor (PAP). The PAP is a high-speed programmable signal processor which has been designed to perform functions such as those required by a narrowband communications terminal. The PAP design employs many of the features of a dedicated pipeline processor while maintaining the flexibility of a programmable signal processing computer. View full abstract»

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  • Sonar design in the real ocean: Multipath limitations on sonar performance

    Publication Year: 1976 , Page(s): 652 - 655
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (115 KB)  

    Traditionally, the nost important military use of underwater sound has been the detection of subnarines at as great a distance as technology and costs will allow (sonar). Nowadays, these distances are as great as hundreds of miles for passive sonars, utilizing the noise radiated by the target, and tens of niles for active sonars, utilizing echoes from their targets. Detection ranges of these nagni... View full abstract»

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  • Motion induced coherence degradation in passive systems

    Publication Year: 1976 , Page(s): 660 - 663
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (101 KB)  

    The problem of correlation degradation resulting from the motion of a transiting target is addressed. The target is assumed to emit a narrowband signal which is remotely received by two or more signal sensors. The signal compensation controls available in correlation processing are a fixed time delay (to align the two received signals) and a fixed time scale-factor shift (to compensate for doppler... View full abstract»

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  • A comprehensive model for fundamental frequency generation

    Publication Year: 1976 , Page(s): 701 - 704
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (92 KB)  

    From these studies, it is possible to model the fundamental frequency (F0) contours for sentences which exhibit a comprehensive range of linguistic communicative functions, and thus extend the understanding of the role of F0 from simple declarative sentences to a class which more nearly typifies the utterances found in nornsl discourse. Any attempt to characterize discourse-l... View full abstract»

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  • An application of the linear prediction technique to efficient coding of speech segments

    Publication Year: 1976 , Page(s): 722
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    Summary form only given, as follows. The paper deals with the application of linear prediction technique to the speech synthesis of both italian and german languages by Standard Speech Reproducing Units (SSRU), it is by combining elementary speech segments of standardized charac teristics extracted fron utterances of native speakers. The nain feature of the method presented is the possibility of s... View full abstract»

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  • Automatic speaker recognition by computers

    Publication Year: 1976 , Page(s): 738
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (6 KB)  

    Summary form only given, as follows. This paper describes a new modular speaker recognition system consisting of a st of real??time speech analysis processors and a pattern recognition software package. Within a government sponsored research project, combinations of different speech analysis procedures and different pattern recognition algorithms are compared in order to find optimal subsystems, t... View full abstract»

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  • Speaker identification by multivariable linear prediction analysis

    Publication Year: 1976 , Page(s): 739
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (8 KB)  

    Summary form only given. The paper gives a solution of the problem of separating n speakers observed by m microphons by modelling the n speakers as a multi-input, multi-output (MIMO) system. The paper demonstrates that for separation there is the requirement m = n, not surprisingly, shows the limitations of machine analysis in the cocktail party situation m = 2, gives an algorithm with results for... View full abstract»

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  • Speech - a possible indicator of physical stress

    Publication Year: 1976 , Page(s): 740
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    Summary form only given, as follows. In the recent years, considerable effort has been expended in determining a quantitative measure of fatigue, and various attempts to correlate psycilological measures with fatigue have not been successful. In this paper, a positive correlation between quantitative characteristics of speech data and fatigue measures is shown to exist. Since both the motor and sp... View full abstract»

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  • Vibration pick-up type ear microphone

    Publication Year: 1976 , Page(s): 794
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    Summary form only given, as follows. A vibration pick-up type ear microphone was developed in order to make howlingless,mask and free hand microphones or the like. Instead of monodirectional, noise cancelling, laryngeal and forehead microphone, this microphone is made by use of a pie3o element which is put in the ear along the canal and picks up the bone conducted sound by the principle of acceler... View full abstract»

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  • [Back cover]

    Publication Year: 1976 , Page(s): c4
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    Freely Available from IEEE
  • Wideband target strength measurements

    Publication Year: 1976 , Page(s): 679 - 681
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (85 KB)  

    The development of the Hydroshock®III impulsive sound source has allowed the collection of acoustic target strength data over a wide frequency range. Deconvolution of a shock-echo pair provides a wideband target impulse response. Convolution off this impulse response with any sonar ping whose spectrum is defined in the frequency range of the impulse response will generate the echo ... View full abstract»

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  • A channel adapted vocoder and its applications to continuous speech recognition

    Publication Year: 1976 , Page(s): 38
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  • GASP: A programmable signal processor

    Publication Year: 1976 , Page(s): 651
    Cited by:  Papers (3)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (91 KB)  

    GASP is a General Arithmetic Signal Processor originally designed for real time linear predictive speech analysis. A "correlation" or sum of products unit forms the heart of the processor, which employs a dual bus system for arguments. Incorporation of a separate data lookahead memory with eight autoincrementing data pointers reduces argument fetch times. The processor operates on 20 bit words con... View full abstract»

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  • A dynamic processing approach to extraction and categorization of phonemic information

    Publication Year: 1976 , Page(s): 5 - 8
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (152 KB)  

    This paper aims to report a new successive procedure for obtaining a sequence of phonemic categories from acoustic speech signal. The procedure is composed of three levels, i.e., enhancement and inhibition of speech spectra (preprocessing), local peak extraction (feature extraction), and processing of dynamic properties of the feature series (categorization). Each level is composed of multistage p... View full abstract»

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  • Evaluation of the performance of piecewise-linear-prediction coding (PLPC) of speech signals

    Publication Year: 1976 , Page(s): 497
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  • Cascade realization of digital inverse filter for extracting speaker dependent features

    Publication Year: 1976 , Page(s): 723 - 726
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    Quest for new speaker dependent features is a constant problem in the design of automatic speaker recognition systems. In speech, information about the speaker usually arises along with the semantic information which makes its independent use difficult. In this paper, a method based on linear prediction (LP) analysis is described which yields features that are more speaker dependent than the usual... View full abstract»

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