Naslov
High-Precision Fractional-Order Integrator for Generating Pink Noise from White Noise

Autori
Tokić, Duje ; Jurišić, Dražen

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
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), 2022, 191-194

ISBN
978-953-233-103-5

Skup
45th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO 2022)

Mjesto i datum
Opatija, Hrvatska, 23.05.2022. - 27.05.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
pink noise ; analog circuits ; circuit synthesis ; fractional order integrator ; approximation ; active-RC circuits ; electrical filters

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA