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- Adress (1)
- Audible artefacts (1)
- Azimuth discrimination (1)
- Azimuth re-synthesis (1)
- Codecs (1)
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- Discrete Fourier transforms (1)
- Estimation (1)
- Frequency estimation (1)
- Inter-aural intensity scaling parameter (1)
- Music sound sources (1)
- Near-field antenna effect; radar calibration; MIMO radar; turntable radar; UWB radar;radar system; scattering imaging; inverse scattering problem; radar resolution (1)
- Pan-mixing (1)
- Redress (1)
- Resonant frequency (1)
- Sound source separation (1)
- Source estimates (1)
- Source music mixtures (1)
- Speech coding (1)
- Stereo (1)
- Time-frequency (1)
- Publication
Articles 1 - 3 of 3
Full-Text Articles in Signal Processing
Power-Weighted Lpc Formant Estimation, Ruairí De Fréin
Power-Weighted Lpc Formant Estimation, Ruairí De Fréin
Conference papers
A power-weighted formant frequency estimation procedure based on Linear Predictive Coding (LPC) is presented. It works by pre-emphasizing the dominant spectral components of an input signal, which allows a subsequent estimation step to extract formant frequencies with greater accuracy. The accuracy of traditional LPC formant estimation is improved by this new power-weighted formant estimator for different classes of synthetic signals and for speech. Power-weighted LPC significantly and reliably outperforms LPC and variants of LPC at the task of formant estimation using the VTR formants dataset, a database consisting of the Vocal Tract Resonance (VTR) frequency trajectories obtained by human experts …
Remedying Sound Source Separation Via Azimuth Discrimination And Re-Synthesis, Ruairí De Fréin
Remedying Sound Source Separation Via Azimuth Discrimination And Re-Synthesis, Ruairí De Fréin
Conference papers
Commercially recorded music since the 1950s has been mixed down from many input sound sources to a two-channel reproduction of these sources. The effect of this approach is to assign sources to locations in a stereo field using a pan-position for each source. The Adress algorithm is a popular way of extracting individual music sound sources from a stereo mixture. A drawback of the Adress algorithm is that when time-frequency components in the stereo mixture are shared between two or more sources, calculating the inter-aural intensity scaling parameter for each source for that time-frequency component is challenging. We show how …
Calibration To Mitigate Near-Field Antennas Effects For A Mimo Radar Imaging System, Ha Hoang, Matthias John, Patrick Mcevoy, Max Ammann
Calibration To Mitigate Near-Field Antennas Effects For A Mimo Radar Imaging System, Ha Hoang, Matthias John, Patrick Mcevoy, Max Ammann
Articles
A calibration method for a high-resolution hybrid MIMO turntable radar imaging system is presented. A line of small metal spheres is employed as a test pattern in the calibration process to measure the position shift caused by undesired antenna effects. The unwanted effects in the antenna near-field responses are analysed, modelled and significantly mitigated based on the symmetry and differences in the responses of the MIMO configuration.