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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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A New Approach to Digital Audio Equalization
2007 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, 2007The design and implementation of a M-band linear phase digital audio equalizer system is presented. Beginning from analysis/synthesis filterbank, an innovative uniform and non uniform bands audio equalizer is derived using multirate properties. In literature fixed frequency response equalization has well-known problems due to algorithms implementation.
S. Cecchi +3 more
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The Journal of the Acoustical Society of America, 1994
There is disclosed a digital audio equalizer comprising an analog/digital (A/D) converter for converting an analog audio signal into a digital audio data, a digital interface receiver for demodulating the digital data that have been modulated into a digital audio interface format into the original audio data, a signal input select switch for selecting ...
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There is disclosed a digital audio equalizer comprising an analog/digital (A/D) converter for converting an analog audio signal into a digital audio data, a digital interface receiver for demodulating the digital data that have been modulated into a digital audio interface format into the original audio data, a signal input select switch for selecting ...
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Automatic audio system equalizing
The Journal of the Acoustical Society of America, 2009An automated process for equalizing an audio system and an apparatus for implementing the process. An audio system includes a microphone unit, for receiving the sound waves radiated from a plurality of speakers, acoustic measuring circuitry, for calculating frequency response measurements; a memory, for storing characteristic data of the loudspeaker ...
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Proceedings of the seventh ACM conference on Creativity and cognition, 2009
The complexity of music production tools can be a significant bottleneck in the creative process. Here we describe the development of a simple, intuitive audio equalizer with the idea that our approach could also be applied to other types of music production tools.
Andrew T. Sabin, Bryan Pardo
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The complexity of music production tools can be a significant bottleneck in the creative process. Here we describe the development of a simple, intuitive audio equalizer with the idea that our approach could also be applied to other types of music production tools.
Andrew T. Sabin, Bryan Pardo
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Self-correcting audio equalizer
The Journal of the Acoustical Society of America, 1983A self-correcting audio equalizer is disclosed for use in a high fidelity sound reproduction system. The equalizer (46) responds to the audio signal to provide an equalized audio signal to a sound reproducing device (28) for generating a corresponding acoustic signal.
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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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Optimum digital audio equalizers with flat frequency response
2012 9th International Conference on Communications (COMM), 2012In this paper a design method of the optimum digital audio equalizers with small ringing impulse responses, by using symmetric B-spline functions is presented. It is important to have a flat frequency response for the audio equalizer. The solution is to approximate the response of each frequency band by using spline functions, that insures continuous ...
Lucian Stanciu, Cristian Lucian Stanciu
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Method and equalization of home audio systems
The Journal of the Acoustical Society of America, 1982A method is provided for correcting errors in the overall reproduction characteristics of an audio system installed in a residence. The method may include the steps of generating a test signal as an input to the audio system and converting the resulting sound generated by the system and its room environment into stored data whose values are a function ...
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Equalizer and audio device using the same
The Journal of the Acoustical Society of America, 1997An equalizer includes: a first attenuating circuit which receives an input signal and a first control signal and attenuates the input signal depending on the level of the first control signal; a filter having a predetermined frequency band which receives the output from the first attenuating circuit; an adding circuit which receives the output from the
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