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A ten-channel equalizer for digital audio-applications
IEEE Transactions on Circuits and Systems, 1989The design and implementation of a high-quality digital audio equalizer set composed of 10 equalizer sections with a worst-case overall signal-to-noise ratio greater than 90 dB, which is suitable for CD (compact-disc) applications is discussed. The implementation of the equalizer sections has been realized with wave digital filters.
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Parametric audio equalizer based on short-time fourier transform
2017 IEEE 17th International Conference on Communication Technology (ICCT), 2017Equalizers (EQs) have been widely used in audio and acoustic processing to adjust the magnitude of certain frequency bands. This paper proposes a parametric EQ based on short-time Fourier transform (STFT). The audio signal is equalized in the frequency domain by modifying its short-time spectrum with the interpolated magnitude frequency response of the
Peng Zhang +5 more
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A New Computer-Controlled Graphic Audio Equalizer IC
IEEE Transactions on Consumer Electronics, 1984Many high-fidelity consumer audio systems include graphic equalizers to control the overall frequency response. This affords the user added flexibility in compensating for shortcomings in his equipment and listening environment. Graphic equalizers, whereas used in the past by only audiophiles, have now become so commonplace that they are even included ...
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Implementation of Android Audio Equalizer Based on FFmpeg
2020With the continuous development of multimedia technology, music has become an indispensable part of people’s daily life, so the audio equalizer used to improve the performance of music is also extremely important. This paper first introduces the development and use of the current excellent FFmpeg audio and video framework, and deeply analyzes the use ...
Weida Zhuang, Xingli He, Jinyang Lin
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On the design of high order digital audio equalizers
2007 International Symposium on Intelligent Signal Processing and Communication Systems, 2007This paper presents a new approach for designing high order digital audio equalizer filters. The new design is based on odd order analog allpass filters and bilinear transformation. The analog allpass filters are designed using Butterworth, Chebyshev I, Chebyshev II and elliptic polynomials.
Alfonso Fernandez-Vazquez +2 more
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Equalization of a PC Audio Card
2005The main goal of this paper was the equalization of an inexpensive PC audio card and the application of a PC computer as a storage device for the sound pressure and vibration measurements. Since magnitude response of the audio card is not flat in the desired frequency band, a finite impulse response (FIR) digital filter was designed and implemented in ...
Pinezić, Vinko +2 more
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Digital data equalizing in multitrack digital audio recording
ICASSP '86. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005Digital Audio stationary-head recording is performed with recording densities requiring playback equalization to reduce intersymbol interference. In today's digital audio recorders, data retrieval is usually implemented with analog circuits (equalizing filters, DC component restoration, data detectors) with manual adjustment.
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IIR filter approximation of an innovative digital audio equalizer
2013 8th International Symposium on Image and Signal Processing and Analysis (ISPA), 2013Digital audio equalization is used to enhance the listening experience introducing corrections in the auditory frequency response. The equalizer performance depends on its implementation which includes optimal filters with sharp transition bandwidth development and a low computational complexity.
Marco Virgulti +2 more
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An audio graphic equalizer IC with monolithic filter technique
International Conference on Consumer Electronics, 1989An audio graphic equalizer IC has been developed using a monolithic filter technique. This technique has made it possible to realize a perfectly on-chip graphic equalizer without external components, and offers a DC control structure. >
null Murakami +4 more
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