AES 147TH CONVENTION OCT PROGRAM OCTOBER 16 – 19, 2019 JAVITS CONVENTION CENTER, NY, USA The Winner of the 147th AES Convention Paper Session P01 Wednesday, Oct. 16 Best Peer-Reviewed Paper Award is: 9:00 am – 11:30 am Room 1E10 Sound Design and Reproduction Techniques for Co-Located Narrative VR Experiences—Marta APPLICATIONS IN AUDIO Gospodarek, Andrea Genovese, Dennis Dembeck, Corinne Brenner, Agnieszka Roginska, Ken Perlin, New Chair: Kevin Bastyr, Harman International, Novi, MI, USA York University, New York, NY, USA 9:00 am Convention Paper 10287 P01-1 Personal Sound Zones: A Comparison between To be presented on Saturday, Oct. 19, Frequency and Time Domain Formulations in a in Session 16—Posters: Spatial Audio Transportation Context—Lucas Vindrola,1,2 Manuel Melon,1 Jean-Christophe Chamard,2 Bruno Gazengel,1 * * * * * France; Guy Plantier1 The AES has launched an opportunity to recognize student mem- 1 LAUM, Le mans Université, Les Mans, France bers who author technical papers. The Student Paper Award Com- 2 PSA Group, Rueil-Malmison, France petition is based on the preprint manuscripts accepted for the AES This paper compares the formulation of a least-squares convention. pressure matching algorithm in the frequency and time A number of student-authored papers were nominated. The domains for the generation of Personal Sound Zones excellent quality of the submissions has made the selection process (PSZ) for a transportation application. Due to variations both challenging and exhilarating. in the transportation’s acoustic environment, the calcu- The award-winning student paper will be honored during the lation time is added to the usually found metrics in the Convention, and the student-authored manuscript will be consid- PSZ bibliography (like Acoustic Contrast, Effort, etc.). ered for publication in a timely manner for the Journal of the Audio Both formulations are implemented to control two zones Engineering Society. in three configurations (4, 6, and 8 sources), using mono- Nominees for the Student Paper Award were required to meet pole simulations and anechoic measurements. In spite of the following qualifications: not always presenting perfectly causal filters—pre-ring- (a) The paper was accepted for presentation at the AES 147th ing in some filters occurs in some cases—the frequency Convention. domain formulation allows achieving equal levels of (b) The first author was a student when the work was conducted Acoustic Contrast, Effort, and Reproduction error more and the manuscript prepared. than 500 times faster than the time domain formulation. (c) The student author’s affiliation listed in the manuscript is an Convention Paper 10216 accredited educational institution. (d) The student will deliver the lecture or poster presentation at 9:30 am the Convention. * * * * * P01-2 Mitigating the Effect of In-Vehicle Road Noise Cancellation on Music Playback—Tao Feng, Kevin The Winner of the 147th AES Convention Bastyr, Harman International, Novi, MI, USA Student Paper Award is: A Road Noise Cancellation (RNC) system is an Active Noise Effect of a Global Metronome on Ensemble Accuracy in Net- Cancellation (ANC) system implemented in a vehicle in worked Music Performance—Robert Hupke, Lucas Beyer, order to minimize undesirable road noise inside the pas- Marcel Nophut, Stephan Preihs, Jürgen Peissig, Leibniz senger cabin. Current RNC systems undesirably affect the Universität Hannover, Hannover, Germany frequency response of music playback. The RNC system’s error microphones sense all the sound in the passenger Convention Paper 10218 cabin, including the music. Hence, RNC systems will can- To be presented on Wednesday, October 16, cel this total sensed sound and not only the road induced in Session 1—Applications in Audio noise. A new True Audio algorithm can directly remove the music signal from the error microphone signals and * * * * * 1 Audio Engineering Society 147th Convention Program, 2019 Fall leave only the interior noise portion. In order to correct- Using acoustic directional couplers and a traditional VNA ly estimate the music portion at the error microphones, mainframe we assembled an “Acoustic Vector Network An- True Audio implements a novel control topology based on alyzer” (AVNA). The instrument measures acoustic scat- a new multiple channel, real time modeling of the music’s tering parameters, the complex reflection and transmis- secondary path transfer function. To validate the effective- sion coefficients, of materials, transmission lines, ported ness of the proposed algorithm, experimental and numer- structures, ducts, etc. After the fashion of electromagnetic ical simulations were performed. The numerical studies VNAs we have constructed millimeter-wave measurement use logs of real sensors mounted on a vehicle forming an heads that span the 800 Hz–2200 Hz (420–150 mm) and RNC system with six reference accelerometers, five con- 10 kHz–22 kHz (35–15 mm) bands, demonstrating scal- trol speakers and six error microphones. Both the models ability. We present initial measurement results. and measurements show that the True Audio algorithm Convention Paper 10220 preserves the frequency response of music when the RNC system is activated. Paper Session P02 Wednesday, Oct. 16 Convention Paper 10217 9:00 am – 12:00 noon Room 1E11 10:00 am AUDIO SIGNAL PROCESSING P01-3 Effect of a Global Metronome on Ensemble Accuracy in Networked Music Performance—Robert Hupke, Lucas Chair: Scott Hawley, Belmont University, Nashville, TN, USA Beyer, Marcel Nophut, Stephan Preihs, Jürgen Peissig, Leibniz Universität Hannover, Hannover, Germany 9:00 am Several rhythmic experiments with pairs drawn from a group of 23 subjects were performed to investigate the P02-1 Analyzing and Extracting Multichannel Sound Field— effect of a global metronome on the ensemble accuracy Pei-Lun Hsieh, Ambidio, Glendale, CA, USA in Networked Music Performance (NMP). Artificial delays Current post production workflow requires sound engi- up to 91 ms were inserted into the audio transmission neers to create multiple multichannel audio delivery for- between the subjects. To investigate the dependencies mats. Inaccurate translation between formats may lead to between delay times, ensemble accuracy and the highly more time and cost for extra manual adjustment; whereas synchronized global metronome, the experiments were in sound reproduction, it causes misinterpretation of the evaluated in terms of tempo acceleration, imprecision original mix and deviation from the intended story. This and subjective judgment of the ensemble play. The results paper proposes a method that combines both analyzing an show that the global metronome leads to a stabilization encoded Ambisonics field from the input multichannel sig- of the tempo acceleration caused by the delay. The impre- nal and analyzing between each pair of adjacent channels. cision stays constant to a threshold of about 28 ms and This allows an overall understanding of the multichannel 36 ms, depending on the delay compensating strategy the sound field while having the ability to have a fine extraction subjects used. from each channel pair. The result can be used to translate Convention Paper 10218 between multichannel formats and also to provide a more 10:30 am accurate rendering for immersive stereo playback. Convention Paper 10221 P01-4 Evaluation of Multichannel Audio in Automobiles ver- sus Mobile Phones—Fesal Toosy, Muhammad Sarwar 9:30 am Ehsan, University of Central Punjab, Lahore, Pakistan P02-2 Profiling Audio Compressors with Deep Neural 1 2 Multichannel surround and 3D audio are slowly gaining Networks —Scott Hawley, Benjamin Colburn, Stylianos Ioannis Mimilakis3 popularity and eventually commercial content in these 1 formats will become common. Many automobiles still Belmont University, Nashville, TN, USA 2 ARiA Acoustics, Washington, DC, USA have a stereo sound system with some firmware or soft- 3 ware that is capable of rendering multichannel audio into Fraunhofer Institute for Digital Media Technology stereo. This paper shows the results of a listening test for (IDMT), Ilmenau, Germany multichannel audio conducted in a medium-sized car. The We present a data-driven approach for predicting the results of this test are compared to the results of a listen- behavior of (i.e., profiling) a given parameterized, non-lin- ing test for the same audio excerpts but conducted on a ear time-dependent audio signal processing effect. Our mobile phone with headphones. The results show that on objective is to learn a mapping function that maps the mobile phones, multichannel audio clearly outperforms unprocessed audio to the processed, using time-domain stereo in terms of perceived audio quality as rated by a samples. We employ a deep auto-encoder model that is user. However in automobiles, multichannel audio only conditioned on both time-domain samples and the con- shows marginal improvement in the rated audio quality. trol parameters of the target audio effect. As a test-case, Convention Paper 10219 we focus on the offline profiling of two dynamic range 11:00 am compressors, one software-based and the other analog. Our results show that the primary characteristics of the P01-5 Realizing An Acoustic Vector Network Analyzer— compressors can be captured, however there is still suf- Marcus MacDonell, Jonathan Scott, University ficient audible noise to merit further investigation before of Waikato, Hamilton, Waikato, New Zealand such methods are applied to real-world audio processing workflows. Acoustic absorption,