Frequency-domain delayless active sound quality control algorithm
نویسندگان
چکیده
This paper presents several broadband active sound quality control algorithms based on delayless frequency-domain techniques and subband adaptive filters. This efficient algorithm provides faster convergence and reduced computational complexity as compared to a time-domain active noise equalizer. An equal-loudness compensation method is also introduced for designing the shaping filter to achieve the desired sound quality. Computer simulations validate this algorithm in applications requiring high-order adaptive filters. r 2008 Elsevier Ltd. All rights reserved.
منابع مشابه
The implementation of delayless subband active noise control algorithms
Wideband active noise control systems usually have hundreds of taps for control filters and the cancellation path models, which results in high computational complexity and low convergence speed. Several active noise control algorithms based on subband adaptive filtering have been developed to reduce the computational complexity and to increase the convergence speed. The subband structure is si...
متن کاملMultidelay Adaptive Filters for Active Noise Control
There are two ways to implement frequency domain filtered x LMS (FXLMS) algorithms. The first carries out both control signal generation and control filter updating in the frequency domain, and the second involves implementation of the control filtering in the time domain and updating of the coefficients of the control filters in the frequency domain. Most active noise control literature is foc...
متن کاملLoad-Balanced Implementation of a Delayless Partitioned Block Frequency-Domain Adaptive Filter
In this paper, a load balanced implementation of a delayless FxLMS algorithm for the purpose of active noise cancellation is proposed. Frequency-domain adaption algorithms using FFT's are well-known for their efficiency. However, their block-based character will lead to a delay in the order of the used block length. A hybrid adaption approach is chosen in this study to combine the advantages of...
متن کاملFifth International Congress on Sound and Vibration
A frequency domain filtered-x type least mean active sound intensity adaptive control algorithm based on waveform synthesis is developed for active control of transformer noise. The algorithm is useful for providing global control of transformer noise by minirnising the mean active sound intensities for the fundamental frequency and its harmonics in the near acoustic field of the transformer. M...
متن کاملIndividual Error Signal Design in Narrowband Active Noise Control Systems
A narrowband active noise control (NANC) system is often applied to reduce undesired noise with multiple tones whose frequencies are close. Generally, an NANC system uses a single error signal to update a bank of adaptive filters configured in direct/parallel or parallel form. This work proposes a delayless filterbank to participate the frequency components of the error signal into individual e...
متن کامل