publications

1. ReLU Layers

  1. Injectivity of ReLU layers: Tools from frame theory
    Daniel HaiderMartin Ehler, and Peter Balazs
    Mathematical Foundations of Machine Learning, 2025
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    Optimal lower Lipschitz bounds for ReLU layers, saturation and phase retrieval
    Daniel Freeman, and Daniel Haider
    Applied Computational and Harmonic Analysis, 2025
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    Invertibility of ReLU-Layers: A Practical Approach
    Hannah Eckert, Daniel HaiderMartin Ehler, and 1 more author
    In International Joint Conference on Computational Intelligence (NCTA), 2024
  4. Convex Geometry of ReLU-layers, injectivity on the ball and local reconstruction
    Daniel HaiderPeter Balazs, and Martin Ehler
    In International Conference on Machine Learning (ICML), 2023

2. Convolution and Stability

  1. Aliasing in Convnets: A Frame theoretic perspective
    Daniel HaiderVincent LostanlenMartin Ehler, and 2 more authors
    preprint, 2025
  2. Residual Hybrid Filterbanks
    Vincent Lostanlen, Xiran Zhang, Daniel Haider, and 3 more authors
    In IEEE Statistical Signal Processing Workshop (SSP), 2025
  3. Instabilities in convnets for raw audio
    Daniel HaiderVincent LostanlenMartin Ehler, and 1 more author
    IEEE Signal Processing Letters, 2024
  4. (Almost) smooth sailing: Towards numerical stability of neural networks through differentiable regularization of the condition number
    Rossen Nenov, Daniel Haider, and Peter Balazs
    In 2nd Differentiable Almost Everything Workshop at the 41st International Conference on Machine Learning (ICML), 2024

3. Audio Processing

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    ISAC: An Invertible and Stable Auditory Filter Bank with Customizable Kernels for ML Integration
    Daniel Haider, Felix Perfler, Peter Balazs, and 2 more authors
    In IEEE International Conference on Sampling Theory and Applications (SampTA), 2025
  2. Hold me tight: Stable encoder/decoder design for speech enhancement
    Daniel Haider, Felix Perfler, Vincent Lostanlen, and 2 more authors
    In Annual Conference of the International Speech Communication Association (Interspeech), 2024
  3. Trainable Signal Encoders that are Robust Against Noise
    Peter BalazsDaniel Haider, Felix Perfler, and 1 more author
    In Internoise Conference, 2024
  4. Fitting auditory filterbanks with multiresolution neural networks
    Vincent LostanlenDaniel Haider, Han Han, and 3 more authors
    In IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA), 2023
  5. Zeit-Frequenz Darstellungen und Deep Learning
    Daniel HaiderPeter Balazs, Nicki Holighaus, and 1 more author
    In Tagungsband der 47ten Jahrestagung fuer Akustik (DAGA), Vienna, Austria, 2021

4. Scattering

  1. Phase-based signal representations for scattering
    Daniel HaiderPeter Balazs, and Nicki Holighaus
    In European Signal Processing Conference (EUSIPCO), Dublin, Ireland, 2021
  2. Master Thesis: Aspects of Time-Frequency Scattering and Towards Phase Scattering
    Daniel Haider
    2019
  3. Extraction of Rhythmical Features with the Gabor Scattering Transform
    Daniel Haider, and Peter Balazs
    In International Symposium on Computer Music Multidisciplinary Research (CMMR), Marseille, France, 2019

5. Gabor Analysis

  1. Double preconditioning for Gabor frame operators: Algebraic, functional analytic and numerical aspects
    Hans G. Feichtinger, Peter Balazs, and Daniel Haider
    Applied and Computational Harmonic Analysis, 2023