Efficient target-response interpolation for a graphic equalizer
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TítolEfficient target-response interpolation for a graphic equalizer
Data de publicació2016-05
Versió de l'editorhttp://ieeexplore.ieee.org/document/7471738/media
A graphic equalizer is an adjustable filter in which the command gain of each frequency band is practically independent of the gains of other bands. Designing a graphic equalizer with a high precision requires evaluating ... [+]
A graphic equalizer is an adjustable filter in which the command gain of each frequency band is practically independent of the gains of other bands. Designing a graphic equalizer with a high precision requires evaluating a target response that interpolates the magnitude response at several frequency points between the command gains. Good accuracy has been previously achieved by using polynomial interpolation methods such as cubic Hermite or spline interpolation. However, these methods require large computational resources, which is a limitation in real-time applications. This paper proposes an efficient way of computing the target response without sacrificing the approximation accuracy. This new approach called Linear Interpolation with Constant Segments (LICS) reduces the computing time of the target response by 55% and has an intrinsic parallel structure. Performance of the LICS method is assessed on an ARM Cortex-A7 core, which is commonly used in embedded systems. [-]
Paraules clau / Matèries
Cita bibliogràficaBELLOCH, Jose A., et al. Efficient target-response interpolation for a graphic equalizer. En 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2016. p. 564-568.
Tipus de documentinfo:eu-repo/semantics/conferenceObject
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