Wavelet based spectral smoothing for head related transfer function filter design

Date

2002-06-15

Author

Hacıhabiboğlu, Hüseyin

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https://hdl.handle.net/11511/70905

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Wavelet based spectral smoothing for head-related transfer function filter design Hacıhabiboğlu, Hüseyin; Günel Kılıç, Banu (2002-01-01) Three wavelet-based spectral smoothing techniques are presented in this paper as a pre-processing stage for head-related transfer function (HRTF) filter design. These wavelet-based methods include wavelet denoising, wavelet approximation, and redundant wavelet transform. These methods are used with time-domain parametric filter design methods to reduce the order of the IIR filters which is useful for real-time implementation of immersive audio systems. Results of a subjective listening test are then present...
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Wavefront Shaping Optimization Algorithms For Focusing Light Through a Multimode Fiber TABAK, MEHMET; Yüce, Emre; Department of Physics (2022-5) Optical fibers are widely used to guide optical signals. Multi-mode fibers offer a greater bandwidth when compared to single-mode counterparts. The intensity at the end of a multi-mode fiber can be affected by mode-to-mode coupling and multi-mode interference. This can reduce the signal throughput. However, the total intensity at the end of the fiber can be modulated by shaping the input wavefront and providing increased signal levels. In our study, we show that focusing light inside the optical fiber is po...
Wavelet packet based analysis of sound fields in rooms using coincident microphone arrays Günel Kılıç, Banu; Hacıhabiboğlu, Hüseyin (2007-07-01) This paper presents a passive analysis method for determining the spatio-temporal characteristics of sound fields in small rooms. The analysis finds an approximate directional reflectogram (ADR) which reveals the approximate arrival directions, time delays and amplitudes of the direct sound and early reflections without using a special or known sound source. A coincident microphone array is used to obtain directional recordings. The recordings are analysed by wavelet packet decomposition to determine the di...
Wavelet-based outlier detection and denoising of airborne laser scanning data Akyay, Tolga; Karslıoğlu, Mahmut Onur; Department of Geodetic and Geographical Information Technologies (2008) The method of airborne laser scanning also named as LIDAR has recently turned out to be an efficient way for generating high quality digital surface and elevation models. In this work, wavelet-based outlier detection and different wavelet thresholding (wavelet shrinkage) methods for denoising of airborne laser scanning data are discussed. The task is to investigate the effect of wavelet-based outlier detection and find out which wavelet thresholding methods provide best denoising results for post-processi...

Citation Formats

H. Hacıhabiboğlu, “Wavelet based spectral smoothing for head related transfer function filter design,” 2002, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/70905.