To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to upgrade your browser.It was chosen to calculate approximate solutions to the inversion problem using the time-domain regularization procedure suggested by Kirkeby and Nelson 11.. Measurement of Reed to Room Transfer Functions Article Full-text available Dec 2019 ACTA ACUST UNITED AC Timo Grothe Sebasti V.For further information, including about cookie settings, please read our Cookie Policy.By continuing to use this site, you consent to the use of cookies.
Got it We value your privacy We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services. To learn more or modifyprevent the use of cookies, see our Cookie Policy and Privacy Policy. Digital Filter Design Download Citation ShareAccept Cookies top See all 128 Citations Download citation Share Facebook Twitter LinkedIn Reddit Download full-text PDF Digital Filter Design for Inversion Problems in Sound Reproduction Article (PDF Available) January 1999 with 734 Reads How we measure reads A read is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Digital Filter Design Free Advertisement ContentKirkeby Philip Nelson 38.03 University of Southampton Discover the worlds research 17 million members 135 million publications 700k research projects Join for free Advertisement Content uploaded by Philip Nelson Author content All content in this area was uploaded by Philip Nelson on Jul 25, 2014 Content may be subject to copyright. Digital Filter Design Software Controlled InputTests were conducted in a quiet listening room using an Apple Macbook Pro with a Fireface 400 audio interface, which has software controlled input and output levels. A single set of Sennheiser HD 650 circum-aural headphones were used, which were equalised using Kirkeby and Nelsons least- mean-square regularization method 19 from the RMS average of 11 impulse response measurements collected using Farinas swept sine technique 20 and a Neumann KU 100. The range of inversion was 5 Hz-4 kHz, and in out-band regularization of 25 dB and 2 dB respectively was employed to avoid sharp peaks in the inverse filters.. An evaluation of pre-processing techniques for virtual loudspeaker binaural ambisonic rendering Conference Paper Sep 2019 Thomas McKenzie Damian Thomas Murphy Gavin Kearney Binaural Ambisonic rendering can be achieved using virtual loudspeakers through head-related impulse response (HRIR) convolution of the Ambisonic loudspeaker feeds. It is widely used in immersive applications such as virtual reality due to its sound field rotation capabilities and low channel count. Binaural Ambisonic reproduction is inaccurate at high frequencies, causing reduced localisation and timbral accuracy, but can be improved through offline pre-processing of the virtual loudspeaker HRIRs. This paper details a numerical and perceptual evaluation of several state of the art pre-processing technique combinations. The noises were convolved with the four types of BRIRs and then convolved with the inverse HpTF of each subject to create signals providing different degrees of externalization. The inverse filter was calculated by a time-domain filter design method that returns a FIR filter with a frequency-dependent regularization 24. These signals were presented over the Sennheiser HD650 headphones at a sound pressure level of 65 dB in the left ear.. The effect of pinna filtering in binaural transfer functions on externalization in a reverberant environment Article Jul 2020 APPL ACOUST Ziran Jiang Jinqiu Sang Chengshi Zheng Xiaodong Li The perception of the externalization of noise stimuli is investigated with respect to the pinna filtering effect on direct and reverberant parts of binaural transfer functions. ![]() For frontal and lateral sources, four types of BRIRs are constructed and investigated. Two of them are measured on subjects with their pinnae exposed or not, and the other two are obtained by concatenating the direct and reverberant parts of the two types of measured BRIRs crosswise. Normal hearing listeners are presented with noise trains convolved with these four types of BRIRs. It is found that pinna filtering in the direct parts is helpful for externalization while pinna filtering in the reverberant parts produces less externalized sound images. Further analysis shows that pinna filtering can change the direct-to-reverberant ratio (DRR), the frequency-to-frequency variability (FFV), and the interaural coherence (IC). The DRR and the FFV are only partially related to the externalization ratings, but the short-term IC corresponds well to the ratings. This study provides guidance for improving externalization perception in binaural synthesis. This can be an ill-posed problem, depending on noise and periodicity in the time signals x s and y r. It was chosen to calculate approximate solutions to the inversion problem using the time-domain regularization procedure suggested by Kirkeby and Nelson 11.. Measurement of Reed to Room Transfer Functions Article Full-text available Dec 2019 ACTA ACUST UNITED AC Timo Grothe Sebasti V.
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