466 Treffer:
Suchergebnisse 1 bis 99 von 466
1. DAFx20  
23rd International Conference on Digital Audio Effects DAFx 2020
Will be now in 2021 and 2020!
 
3. Labor  
The ARI lab consists of five testing and measurement stations: GREEN and BLUE (ISF Grün, ISF Blau): Two sound-booths (IAC-1202A) are used for audio recording and psychoacoustic testing performed with headphones. Each of the booths is controlled from outside by a computer. Two bidirectional…  
4. Loudspeaker Array Studio (Purple)  
The loudspeaker array is mounted in a semi-anechoic room (3 x 3 m). It consists of 91 loudspeakers, arranged in a spherical order, and 2 subwoofers. This high number of loudspeakers enables many possible demonstration, for instance: Present sound sources from any given directions by…  
5. ISF  
Das Institut für Schallforschung der Österreichischen Akademie der Wissenschaften betreibt anwendungsoffene Grundlagenforschung in der Akustik.  
6. Betreuung und Praktika  
Am Institut für Schallforschung (ISF) dürfen PraktikantInnen mehr als nur über die Schulter schauen. Stattdessen wirken sie aktiv an Projekten in den einzelnen Forschungsgruppen mit oder bekommen oft gar eigene Projekte zugewiesen. Ihre Arbeit verrichten sie in enger Zusammenarbeit mit den…  
7. ExpSuite  
Objective ExpSuite ist ein Softwareprogramm, das die Implementierung psychoakustischer Experimente ermöglicht. ExpSuite ist der Name eines Frameworks, das als Basis verwendet wird verschiedene Anwendungen (Applikationen) rasch zu erstellen. Es kann mit vielen individuell angepassten und…  
8. Subjects  
Subjects ist eine einfach gehaltene Datenbank zur Verwaltung von Versuchspersonen. Das Konzept ist es, Einträge von normalhörenden, hörbeeinträchtigten, sowie cochleaimplantattragenden Versuchspersonen zu erstellen. Die verschiedenen Tabs ermöglichen es Kontaktdaten, Experimentinformationen…  
9. Hoeschele, Dr. Marisa  
Musikalität und Bioakustik Maschinelles Lernen GruppenleiterIn Tel: +43 1 51581-2556 Email: mhoeschele [at] kfs.oeaw.ac.at Scientific IDs: ORCID: http://orcid.org/0000-0002-2102-0882 Research Gate: https://www.researchgate.net/profile/Marisa_Hoeschele Google scholar:…  
10. Download  
Derzeit ist STx für nichtkommerzielle, wissenschaftliche Zwecke und für die studentische Verwendung im Rahmen von Lehrveranstaltungen und Hochschularbeiten frei und kostenlos verwendbar. Wenn Sie STx verwenden, zitieren Sie bitte einen dieser Artikel. Bei Interesse an einer Version zur…  
11. STx  
Sound Tools Extended (STx) ist eine unter Windows laufende Anwendung zur Analyse und Verarbeitung von akustischen Signalen und Sprache. Das Softwarepaket wird am Institut für Schallforschung in Wien entwickelt und findet in aller Welt in zahlreichen Gebieten der Akustik Verwendung. Für…  
12. Projekte  
Abgeschlossene Projekte → Abgeschlossene Projekte → Abgeschlossene Projekte → Abgeschlossene Projekte → Multidisziplinäre Projekte  
14. Features  
Signal Recording The STx Recorder is supplied with a level meter. Digital recordings allow no overload at all. For that reason it is extremely important to adjust the signal input level to -12 dB in average, providing enough headroom for signal peaks. The normal recorder can use all…  
15. Publications  
If you use STx in your scientific work, please cite one of the following publications, if appropriate: Balazs, P., Noll, A., Deutsch, W., Laback, B. (2000): Concept of the integrated signal analysis software system STx, in: Jahrestagung der Österreichischen Physikalischen Gesellschaf 2000,…  
16. The AMT  
The Auditory Modeling Toolbox (AMT) is a Matlab/Octave toolbox intended to serve as a common ground for all auditory modelling in Matlab or Octave. The AMT has been initiated by Peter Søndergaard and contains contributions of many international auditory research groups.  The AMT is…  
17. LTFAT  
The Linear Time/Frequency Toolbox (LTFAT) is toolbox for  time-frequency analysis in Matlab/Octave. LTFAT is developed at: CAHR, Technical University of Denmark, ARI , Austrian Academy of Sciences I2M, Institut de Mathématiques de Marseille  
18. HRTF-Database  
The ARI HRTF database contains high-resolution HRTFs of more than 200 subjects. Most subjects were measured using in-the-ear microphones, for a few others we used behind-the-ear microphones placed in hearing-aid devices. 1550 positions were measured for each listener including the…  
19. Detailed Description  
Individual HRTFs were measured in a semi-anechoic chamber. Twenty-two loudspeakers (custom-made boxes with VIFA 10 BGS as drivers; the variation in the frequency response was ±4 dB in the range from 200 to 16000 Hz) were mounted at fixed elevations from -30° to 80°. They were driven by…  
20. Tools  
These tools may help you to interact with the HRTFs. We recommend to read the documentation before using HRTF data. ExpSuite Installer This is a full package of ExpSuite and contains: AMTatARI, a viewer and measurement tool for HRTFs saved in the ARI format. It is for…  
21. Documentation  
This documentation may help you to interact with the HRTFs. How to use the HRTF results   Results from the post processing procedure (pdf, also included in ExpSuite/AMTatARI Installer) ARI HRTF format   (Description of the old HRTF ARI format v1: ARI…  
22. Details In-The-Ear HRTFs  
Blocker-ear-canal technique with the in-the-ear microphones (KE-4-211-2, Sennheiser). The microphones were fully inserted in the ear canal, see figure to the right.  
23. Behind-the-ear HRTFs  
Omnidirectional microphones were positioned above the pinna, mounted in a casing of a hearing-aid device (Tempo, MED-EL).  
24. ARI and CIPIC database  
The HRTF positions are not the same in the ARI and CIPIC format. For example: The polar angles in ARI format cover a range from -30 to 80 deg, the range in CIPIC is from -45 to 90 deg (and 230.625 in the back). Even though the ARI format provides a flexible grid, the HRTF positions in the CIPIC…  
25. Mesh2HRTF  
Mesh2HRTF wurde am Institut für Schallforschung als ein Open Source Projekt mit dem Ziel entwickelt, eine einfache Möglichkeit zur Berechnung von HRTFs bereitzustellen. Als Zielgruppe waren ursprünglich Anwenderinnen und Anwender aus dem Bereich "Binaural Audio" gedacht. Der BEM-Teil von…  
26. AMUD  
A-MUD is an extension to the STx signal processing package developed at ARI and implements the method for the automatic detection and segmentation of ultrasonic vocalizations (USVs) of mice published in: "Automatic mouse ultrasound detector (A-MUD): A new tool for processing rodent…  
27. Software  
The Acoustics Research Institute is involved in the programming and maintenance of a number of software projects with applications in acoustic research. AMUD:   automatic detection and segmentation of ultrasonic vocalizations ExpSuite:   Software framework for hearing-related…  
28. Dictionary Learning for Sparse Audio Inpainting  
Georg Tauböck, Shristi Rajbamshi, and Peter Balazs This is the accompanying webpage for the article entitled "Dictionary Learning for Sparse Audio Inpainting" submitted to the IEEE Journal of Selected Topics in Signal Processing. Abstract: The objective of audio inpainting is to fill a gap in…  
29. Tauböck, DDI Dr. Georg  
MATLAB Toolboxes CS-CHEST    A MATLAB Toolbox for Compressive Channel Estimation CS-CHEST is currently available in version V1.0a and contains a collection of MATLAB routines for simulating  the performace of Compressive Estimation of Doubly Selective Channels in…  
30. Multidisziplinäre Projekte  
Laufende Projekte  
31. VarDiÖ: Variation and Change of dialect varieties in Austria (in apparent and real time)  
Finanzierung FWF Projektteil 02 des Sonderforschungsbereichs Deutsch in Österreich. Variation - Kontakt - Perzeption  finanziert vom FWF (FWF6002) in Kooperation mit der Universität Salzburg Projektleitung: Stephan Elspaß, Hannes Scheutz, Sylvia Moosmüller, Michael Pucher Beginn…  
32. Vowel and consonant quantity in Southern German varieties  
Vowel and consonant quantity in Southern German varieties:  D - A - CH project granted by DFG, FWF, SNF Principal investigators:  Felicitas Kleber, Michael Pucher, Sylvia Moosmüller†, Stephan Schmid  Start of the project: 1st of June 2015 Projektbeschreibung Viele…  
33. Acoustic cues in production and perception of irony in normal-hearing and CI-listeners  
Introduction The ability of listeners to discriminate literal meanings from figurative language, affective language, or rhetorical devices such as irony is crucial for a successful social interaction. This discriminative ability might be reduced in listeners supplied with cochlear implants…  
34. Acoustic Features for Speaker Models  
Objective Speaker models generated from training recordings of different speakers should differentiate between speakers. These models are estimated using feature vectors that are based on acoustic observations. So, the feature vectors should themselves show a high degree of inter-speaker…  
35. Automatic Speaker Identification  
Objective The generation of speaker models is based on acoustic features obtained from speech corpora. From a closed set of speakers, the target speaker has to be identified in an unsupervised identification task. Method Training and comparison recordings exist for every speaker. The training…  
36. Automatic Speaker Verification  
Objective The offender recording (a speaker recorded at the scene of a crime) is verified by determining the similarity of the offender recording's typicality to a recording of a suspect. Method A universal background model (UBM) is generated via the training of a parametric Gaussian Mixture…  
37. Die Stimme der jungen Wienerin – eine experimental-phonetische Longitudinalstudie zur Stimmqualität von jungen Wienerinnen  
Finanzierung Kultur Wien Projektleitung: Michael Pucher Beginn des Projekts: 1. Februar 2019 Projektbeschreibung Um den aktuellen Zustand einer Sprache zu erheben, soll bekanntlich der Sprachgebrauch eines alten, ländlichen, nicht mobilen Mannes analysiert werden. Für…  
38. Lateral Variants of Bosnian Migrants Living in Vienna  
Objective The aim of this study is to investigate the phonetics of second language acquisition and first language attrition, based on the acoustic and articulatory lateral realizations of Bosnian migrants living in Vienna. Bosnian has two lateral phonemes (a palatalized and an…  
39. Optimal Gaussian Mixture Model (GMM) Initialization for Speaker Modeling  
Objective The modeling step in speaker detection has an enormous influence on the classification task, because the quality of the model depends on the parameters chosen in this step. False classifications, false identifications, and false verifications can result from malformed speaker models.…  
40. Soziolekte in Wien - die mittelbairischen Varietäten  
Projektbeschreibung Generell werden Sprachvarietäten in Metropolen nicht nach geographischen Grenzen differenziert, sondern vielmehr nach sozialer und/oder ethnischer Herkunft (Labov 2001). Wenn durch Kontakt zwischen Personengruppen verschiedener sozialer und/oder ethnischer Herkunft mehrere…  
41. Adaptive Audio-Visuelle Sprachsynthese von Dialekten (AVDS)  
Objective The aim of this project is to conduct basic research on the audio-visual speech synthesis of Austrian dialects. The project extends our previous work on Method 10 speakers (5 male and 5 female) will be recorded for each dialect. The recordings comprise spontaneous speech, read…  
42. BE-SyMPHONic  
Finanzierung FWF BE-SyMPHONic: French-Austrian joint project granted by ANR and FWF Principal investigators: Basilio Calderone, Wolfgang U. Dressler Co-applicants: Hélène Giraudo, Sylvia Moosmüller Start of the project: 13th January 2014 Introduction Language sounds are realized in…  
43. Die österreichische Standardaussprache Wiens in Kontakt mit der deutschen Standardaussprache  
Finanzierung Kultur Wien Derzeit stellen SprecherInnen aus Deutschland die größte AusländerInnengruppe in Österreich und insbesondere in Wien dar. In diesem vom Kulturamt der Stadt Wien geförderten Projekt wird untersucht, ob und inwieweit aufgrund des Kontakts mit der deutschen…  
44. Forensic Speech and Audio Analysis  
Forensic Speech Analysis is currently being developed using two main methodologies: Automatic methods, applying digital signal processing algorithms and Bayes Statistics. Acoustic Phonetics and Phonology based on acoustic measurements of speech parameters, such as formant frequencies…  
45. Gestural coordination and speech rhythm  
Implications for pathological speech Coordinated Project 2016-17 Scuola Normale Superiore (SNS), Pisa – Acoustic Research Institute (ARI), Austrian Academy of Science, Vienna PIs: Chiara Celata (SNS), Sylvia Moosmueller (ARI) Research personnel: Chiara Meluzzi (SNS), Bettina Hobel…  
46. Parkinson Speech  
Effects of the subthalamic stimulation on the characteristic of speech by parkinson patients.  
47. Phonetics and Phonology of the Viennese Dialect  
Introduction As is customary for urban varieties, the varieties of Vienna are predominantly social varieties. Education and social background form the primary factors which define the language behaviour of the speakers. The Viennese dialect belongs to the Middle Bavarian dialect group. Around…  
48. Speaker Clustering  
Objective In speaker identification and speaker verification, wrong classifications can result from a high similarity between speakers that is represented in the speaker models. These similarities can be explored using the application of cluster analysis. Method In speaker detection, every…  
49. The Vowels of Standard Austrian German  
Objective Up to now, a thorough phonetic-acoustic and phonological description of the vowels and the vowel system of Standard Austrian German has not been provided. Method Approximately 11,000 vowels of three female and three male speakers of Standard Austrian German have been segmented and…  
50. Vowel Systems in Comparison  
Objective This project describes vowel systems of several languages acoustically and compares them. The project's main interest is focused on languages with acoustically insufficient descriptions thus far, e.g. Albanian, Romanian, Ful, Mandinka, or Crioulo. Method Selected speakers are asked…  
51. Vowel Tensity in Standard Austrian and Standard German  
Finanzierung FWF DFG FWF DACH I 536-G20: 2011-2013 Cooperation with the Institute of Phonetics and Speech Processing, LMU Munich. Project leader (Austria): Sylvia Moosmüller Project leader (Germany): Jonathan Harrington Objective Across languages, the distinction between so-called…  
52. Phonetik  
Laufende Projekte Abgeschlossene Projekte  
53. Wiener Kinder mit anderer Muttersprache als Deutsch: Evaluierung der Verdachtsdiagnose Sprachentwicklungsstörung mit Fokus auf phonetisch-phonologische Faktoren  
Viele Wiener Kinder mit anderer Muttersprache als Deutsch erhalten die Verdachtsdiagnose Sprachentwicklungsstörung. Die Studie evaluiert wie häufig dieser Verdacht durch die diagnostische Einbeziehung der Muttersprache bestätigt wird. Dazu werden Daten einer Sprechstunde am Wiener AKH…  
54. Pole-Zero-Vokaltraktmodell  
Computermodelle für Sprachproduktion und Sprachanalyse sind sein den 1960er Jahren von wissenschaftlichen Interesse. Viele Modelle ersetzen den Vokaltrakt durch eine segementierte Röhre, wenn aber Nasale wie /n/ und /m/ oder nasaliesierte Vokale betrachtet werden sollen, sind Ein-Rohr Modelle…  
55. Beam Forming  
Objective The beam forming method focuses an arbitrary receiver coil using time delay and amplitude manipulation, and adds to the temporal signal of the microphones or the short time Fourier transform. Method 64 microphones are collected by a microphone array with arbitrary shape. For…  
56. LARS - LärmArme RumpelStreifen (low noise rumble strips)  
Introduction Rumble strips are (typically periodic) grooves place at the side of the road. When a vehicle passes over a rumble strip the noise and vibration in the car should alert the driver of the imminent danger of running off the road. Thus, rumble strips have been shown to have a positive…  
57. Orthobem: Simulation of Vibrations in Tunnels  
Objective Methods to predict the propagation of vibrations in soil are relatively undeveloped. Reasons for this include the complexity of the wave propagation in soil and the insufficient knowledge of material parameters. During this project a method was developed to simulate the propagation…  
58. PAAB - Psychoakustische Analyse Auffälliger Bogengeräusche  
Introduction Railway vehicles passing through tight curves can produce a high pitched noise called curve squeal. Curve squeal is a very salient type of noise located in the high frequency range that can range between a tonal narrow band and a wide band noise. The reason for the tonal noise is…  
59. RAARA - Residential Area Augmented Reality Acoustics  
Finanzierung FFG Beschreibung Wir danken für die Förderung durch die Forschungsförderungsgesllschaft (FFG), Projektnummer 873588. Lärm bedeutet Ärger. Er wird neben Verkehr und Gewerbe vor allem von Heiz- oder Kühlgeräten emittiert: Luftwärmepumpen, Rückkühlern und Lüftern. Um die…  
60. Stochastic Transformation Methods (Acoustics and Vibration)  
Objective In the past a FWF project dealing with the basics of Stochastic Transformation Methods was executed at the ARI. Explicitly the Karhunen Loeve Expansion and the Transformation of a polynomial Chaos were applied in the wave number domain. The procedure is based on the assumption of…  
61. Vibrations in Random Layers  
Objective One of the biggest problems encountered when building numerical models for layers is the lack of exact deterministic material parameters. Therefore, stochastic models should be use. However, these models have the general drawback of overusing computer resources. This project…  
62. WiABahn - Akustische Wirkung von gleisnahen Abschirmkanten und Bahnsteigdächern  
Introduction Railway platforms are located very close to the track and thus are assumed to alter the sound propagation. The degree of this effect, however, has not yet been investigated in detail Aims The aim of the project WiaBahn was to investigate the shielding effect of railway…  
63. RailVib - Vibrationen von Eisenbahntunnels  
Finanzierung ÖAW Beschreibung Eisenbahntunnel vermeiden direkte akustische Beeinträchtigungen durch den Bahnverkehr. Schwingungen aus Tunneln breiten sich jedoch im Boden aus und führen zu Störungen durch wahrgenommene niedrigfrequente Vibrationen. Ziel dieses Projektes ist es, ein…  
64. Randelementemethode im Zeitbereich  
Ziel Die Randelemente-Methode (BEM) wird oft zur Simulation von akustischen Abstrahl- und Reflektionsproblemen benutzt. Im Allgemeinen wird eine Formulierung im Frequenzbereich verwendet, wenn jedoch kurze Impulsantworten oder eine Kopplung mit nichtlinearem Strukturverhalten in Interesse sind,…  
65. Acoustic Holography  
Objective Acoustic holography is a mathematical tool for the localization of sources in a coherent sound field. Method Using the information of the sound pressure in one plane, the whole three-dimensional sound field is reconstructed. The sound field must be coherent and the half-space in…  
66. BIOTOP: Adaptive Wavelet and Frame techniques for acoustic BEM. FWF Project I-1018-N25  
Finanzierung FWF Einführung Die Lokalisierung von Schallquellen spielt eine wichtige Rolle im täglichem Leben. Die Form des menschlichen Kopfs, des Torsos und vor allem des Außenohrs (Pinna) bewirken einen Filtereffekt für einfallenden Schall und spielen daher eine wichtige Rolle bei der…  
67. Boundary Element Method (BEM) Model of the Head  
Objective In order to numerically calculate individual head-related transfer functions (HRTFs), a boundary element model (BEM) was developed. This model makes it possible to calculate the sound pressure at the head that is caused by different external sound sources with frequencies up to 20,000…  
68. Calm Tracks & Routes  
Objective Upon first investigation, the design of new outward-curved noise barriers has an improved noise-shielding effect if absorbing material is applied. Further investigation shall prove this ability. Numeric simulations and measurements are being processed. Method Advanced boundary…  
69. Correction of Failures in Cogwheels  
Objective In certain measurement setups, such as the measurement of gear mechanism behavior undergoing load reversal, the fine structure of the rotation speed function within a single rotation is interesting. In these situations, measurement errors caused by irregular cog intervals or by other…  
70. Development of a General C++ Class for Wavelet Analysis  
Objective This project aims to develop an independent modulus for the wavelet analysis that contains a simple program interface and can be used flexibly. Method The implementation was in C++ in the form of a wavelet analysis class and a signal queue. Features: The Input/Output data format…  
71. Documentation Wavelet Analysis and Transformations of the Cohen Class  
Objective The usual transformation in acoustics is the Fourier-Transformation. A fast and simple implementation is the windowed Fast Fourier Transformation. A disadvantage of the FFT is that all frequencies are equally spaced in the time frequency plane. A logarithmic spacing that allows keeps…  
72. Extensions for HAMS: Burton-Miller, Fast Multipole Method (FMM)  
Objective In the boundary element method for infinite exterior spaces occur spurious modes that belong to the interior problem. The resonances are caused by a singularity of the matrix. As compensation additional equations are used that belong to chief points in the interior space. Method A…  
73. Measurements of test runs of the Austrian railways OEBB  
Objective The Acoustic Research Institute was mandated to do measurements with the acoustic 64-channel microphone array using the beam forming method to derive a source model for high speed trains according to the new guideline CNOSSOS-EU. Method The beam forming method was used, because the…  
74. MPEG4-Features for Diadem  
Objective In Cooperation with National Instruments an implementation of MPEG4 features in the software package DIADEM is planned. Method The application of MPEG4 features to noise is proven. Now the implementation of MPEG4 features into DIADEM is planned. In preparation of the project…  
75. Multilevel Fast Multipole Method (MLFMM)  
Objective The Multilevel Fast Multipole Method, when used in combination with the Boundary Element Method (BEM), is a tool to significantly speed up the simulation of large objects almost without loss in accuracy. Method The Fast Multipole Method subdivides the Boundary Element mesh into…  
76. New Approaches in Ray-Tracing and Boundary Element Method  
Objective An important difficulty of ray-tracing and boundary element method is the fine grid, which is needed in the high frequency region. Method By means of new alternating shape functions e.g. wavelets at the boundary it could be possible to define a grid on the boundary that is…  
77. Principal Component Analysis (PCA) for the Estimation of the Acoustic Far-Field Level  
Objective If measurements are possible only at the hull of a machine, a tool is needed to separate the dominating near-field components from the far-field components. This, in turn, allows the far-field levels to be estimated. The separation is often not possible using spectral methods, because…  
78. RELSKG: Development of a computational method for noise barriers with a complex geometry  
Objective Standard noise mapping software use geometrical approaches to determine insertion loss for a noise barrier. These methods are not well suited for evaluating complex geometries e.g. curved noise barriers or noise barriers with multiple refracting edges. Here, we aim at deriving…  
79. Spectral Transform of Sound Fields (STSF)  
Objective The Spatial Transform of Sound Fields (STSF) is an extension of the acoustic holography that enables the handling of incoherent sound sources. Method The Karhunen Loeve Expansion or Principal Component Analysis (PCA) method is used to separate the random field recorded at different…  
80. SysBahnlärm  
Objective SysBahnLärm was a joint project of the ARI with the TU Vienna the Austrian Railways and industrial partners funded by the FFG as well as the ÖBB. Aim of the project was to create a handbook on the systemic reduction of railway noise. The ARI was responsible for the psychoacoustic…  
81. Wavelet Approaches in the Fast Multipole Method  
Objective Beside the Fast Multipole Method wavelet based approaches are of increasing interest for the fast calculation of large matrices. Method The first part of the project is the implementation of the wavelet method for the compression of the data. Next step is the investigation whether…  
82. Numerik  
Laufende Projekte Abgeschlossene Projekte  
83. Simulation von Röhren  
Einleitung Die Modellierung der Schallabstrahlung von (offenen) Röhren hat viele Anwendungen in der Akustik, z.B. um Instrumente wie Flöte, Röhrenglocken oder Dudelsäcken zu modellieren oder Rechenmodelle des menschlichen Vokaltrakts zu erstellen. Einfache Modelle setzen voraus, dass das…  
84. ANACRES: Analysis and Acoustics Research  
Finanzierung WTZ Scientific and Technological Cooperation between Austria and Serbia (SRB 01/2018) Duration of the project: 01.07.2018 - 30.06.2020 Project partners Acoustics Research Institute, ÖAW (Austria) University of Vienna (Austria) University of Novi Sad (Republic of Serbia)…  
85. FLAME: Frames and Linear Operators for Acoustical Modeling and Parameter Estimation.  
Finanzierung FWF START project of P. Balazs. Diese Seite ist eine Projektbeschreibung und als solche in englischer Sprache verfasst. This international, multi-disciplinary and team-oriented project will expand the group Mathematics and Acoustical Signal Processing at the Acoustic Research…  
86. INSIGHT: Infinite Dimensional Signal Processing Techniques for Acoustic Applications  
Finanzierung WWTF General Information Funded by the Vienna Science and Technology Fund (WWTF) within the  "Mathematics and …2016"  Call (MA16-053) Principal Investigator: Georg Tauböck Co-Principal Investigator: Peter Balazs Duration: 01.07.2017 –…  
87. Irregular Frames of Translates  
Objective General frame theory can be more specialized if a structure is imposed on the elements of the frame in question. One possible, very natural structure is sequences of shifts of the same function. In this project, irregular shifts are investigated. Method In this project, the…  
88. Practical Time Frequency Analysis  
Objective Numerous implementations and algorithms for time frequency analysis can be found in literature or on the internet. Most of them are either not well documented or no longer maintained. P. Soendergaard started to develop the Linear Time Frequency Toolbox for MATLAB. It is the goal…  
89. Start des FWF-Projekts "Time-Frequency Implementation of HRTFs"  
Finanzierung FWF The FWF project "Time-Frequency Implementation of HRTFs" has started. Principal Investigator: Damian Marelli Co-Applicants: Peter Balazs, Piotr Majdak Objectives In the context of binaural virtual acoustics, a sound source is positioned in a free-field 3-D space…  
90. Amadee: Frame Theory for Sound Processing and Acoustic Holophon  
S&T cooperation project 'Amadee' Austria-France 2013-14, "Frame Theory for Sound Processing and Acoustic Holophony", FR 16/2013 Project Partner: The Institut de recherche et coordination acoustique/musique (IRCAM)  
91. BanachFrameMul: Bessel and Frame Multipliers in Banach Spaces  
Objective Another project has investigated the basic properties of frame and Bessel multipliers. This project aims to generalize this concept so that it will work with Banach spaces also. Method As the Gram matrix plays an important role in the investigation of multipliers, it is quite…  
92. BesselMult: Basic Properties of Bessel and Frame Multipliers  
Objective The applications involving signal processing algorithms (like adaptive or time variant filters) are numerous. If the STFT, the Short Time Fourier Transformation, is used in its sampled version, the Gabor transform, the use of Gabor multipliers creates a possibility to construct a…  
93. BestApprMult: Best Approximation of Matrices by Frame Multipliers  
Objective Practical experience has shown that the concept of an orthonormal basis is not always useful. This led to the concept of frames. Models in physics and other application areas, including sound vibration analysis, are mostly continuous models. Many continuous model problems can be…  
94. Discrete Gabor Analysis  
Basic Description This project line has the goal of finding efficient algorithms for signal processing applications. To apply the results of signal processing, Gabor or wavelet theory, the algorithms must be formulated for finite dimensional vectors. These discrete results are motivated by the…  
95. Double Preconditioning for Gabor Frames  
Objective The Short-Time Fourier Transform (STFT), in its sampled version (the Gabor transform), is a well known, valuable tool for displaying the energy distribution of a signal over the time-frequency plane. The equivalence between Gabor analysis and certain filter banks is a well-known fact.…  
96. Frame Multiplier: Theory and Application in Acoustics (WWTF 2007)  
This project ended in September 2011. Media Coverage: APA Zukunftswissen Meetings The final MulAc Meeting was in Vienna from 29th to 30th of August 2011. Program Particpants The ARI Mulac Frame Meeting was held on Tuesday, June 15th 2010at ARI. The MULAC Mid-term Meeting was…  
97. Frames in Finite Dimensional Spaces  
Objective In recent years, frames in signal processing applications have received more and more attention. Models, data, and operators must be discretized in order to function numerically. As a result, applications and algorithms always work with finite dimensional data. In the finite…  
98. FramMulAc: General Frame Multiplier Theory  
Objective Gabor multipliers are an efficient tool for time-variant filtering. They are used implicitly in many engineering applications in signal processing. For these operators, the result of a Gabor transform (the sampled version of the Short Time Fourier Transform) is multiplied by a fixed…  
99. FTAA: Frame Theory and Asymptotic Analysis  
Finanzierung WTZ Scientific and Technological Cooperation with Macedonia 2016-18 Project duration: 01.07.2016 – 30.06.2018 The main aim of the project is to combine the research areas of Frame Theory and Generalized Asymptotic Analysis. Project partner institutions: Acoustics Research…  
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