High-Precision Fractional-Order Integrator for Generating Pink Noise from White Noise (CROSBI ID 719933)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Tokić, Duje ; Jurišić, Dražen
engleski
High-Precision Fractional-Order Integrator for Generating Pink Noise from White Noise
For audio testing, a pink noise generator is a very useful and widely used tool for equalization of loudspeaker systems, room acous tics and crossovers. It can be built as a digital, analog or mixed circuit. The pink noise generator consists of a white noise source followed by a fractional order i ntegrator (FOI) with a roll-off of 10 dB/decade. In this way, theobtained output power is constant in each decade, which is essential for testing audio devices within the entire audio frequency ban d. In this paper, an active realization of an FOI with an order 1/2 is presented, using an active-RC circuit that uses an operational amplifier as the active element. To build an FOI, we can use different approximation methods. We use our recently published Minimax method (MMX), with unequally (optimally) spaced singularities and compare it with a method proposed by other authors. The latter intuitively considers optimal singularities equally spaced on a logarithmic scal e. We demonstrate the superiority of our proposed MMX approach.
pink noise ; analog circuits ; circuit synthesis ; fractional order integrator ; approximation ; active-RC circuits ; electrical filters
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Podaci o prilogu
191-194.
2022.
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objavljeno
978-953-233-103-5
10.23919/MIPRO55190.2022.9803506
Podaci o matičnoj publikaciji
Proceedings of the 2022 45th Jubilee International Convention on Information, Communication and Electronic Technology (MIPRO)
Koricic, Marko et al.
Opatija: Institute of Electrical and Electronics Engineers (IEEE)
2623-8764
Podaci o skupu
MIPRO 2022
predavanje
23.05.2022-27.05.2022
Opatija, Hrvatska