AES New York 2015
Engineering Brief EB6

EB6 - Posters 1

Sunday, November 1, 10:00 am — 11:30 am (S-Foyer 1)

EB6-1 Duplex Panner: Spatial Source Panning for Commercial Music ApplicationsSamuel Nacach, Element Audio Group - New York, USA; New York University, Abu Dhabi - Abu Dhabi, UAE
The Duplex Panner, introduced at the 137th AES Convention, combines elements from binaural processing, Ambiophonics, the Haas effect, and other widening techniques, to develop a tool, that when listening on headphones, renders preferred stereo imagery over the unprocessed version of the same musical content. To understand if this algorithm can translate to loudspeaker systems without distortion, this paper examines the methodologies employed to achieve spatial panning and how the algorithm was built, how the processing affects the signal, and accordingly what its psychoacoustic implications may be. Through this detailed analysis, we conclude that, unlike other spatial panning techniques, the Duplex Panner is unlikely to be constrained by physical or psychoacoustic limitations in both headphone and loudspeaker systems.
Engineering Brief 220 (Download now)

EB6-2 Development of the Sound Field 3D Intensity Probe Based on Miniature MicrophonesJozef Kotus, Gdansk University of Technology - Gdansk, Poland; W. Moskwa; Andrzej Czyzewski, Gdansk University of Technology - Gdansk, Poland; Bozena Kostek, Gdansk University of Technology - Gdansk, Poland; Audio Acoustics Lab.
The engineered measuring probe uses three pairs of miniature microphones coupled. The signals from the microphones after an initial amplification are fed to differential circuits. Due to the required symmetry of the circuit it was necessary to select electronic components very carefully. Moreover, additional digital signal processing techniques were applied to avoid amplitude and phase mismatch. The view of the engineered probe is presented in photographs. Characteristics of the probe measured in an anechoic chamber are attached followed by a discussion of achieved results. The obtained results were compared with the reference USP probe, produced by the Microflown company.
Engineering Brief 221 (Download now)

EB6-3 GaME: Game for Music EducationRaphaël Marczak, Aquitaine Science Transfert - Pessac, France; Pierre Hanna, LaBRI - University of Bordeaux - Talence, France; Matthias Robine, LaBRI - University of Bordeaux - Talence, France; Elodie Duru, Aquitaine Science Transfert
Music teachers wish that their students spend as much time as possible with their instrument in hands between lessons. By using methods derived from game studies and computer science, GaME offers a ludo-pedagogical solution for keeping young audiences motivated. The motivation is sustained through the use of well-designed involvement mechanisms and real-time feedback about the performances. GaME relies on signal processing algorithms for extracting and comparing musical information, thus enabling an automatic recognition of the chords and notes as actually played by the musician. GaME can be played on computer, tablet, smartphone and even online. GaME includes a score editor and a gameplay metric system to provide feedback helping teachers and parents to create new levels based on specific musical concepts.
Engineering Brief 222 (Download now)

EB6-4 User-Interactive Binaural Rendering Algorithm Using Head-Related Transfer Function and ReverberationHyun Jo, DMC R&D Center, Samsung Electronics Co. - Suwon, Gyeonggi-do, Korea; Jaeha Park, Samsung Electronics Co. Ltd. - Suwon, Gyeonggi-do, Korea; Sangmo Son, DMC R&D Center, Samsung Electronics Co. - Suwon, Gyeonggi-do, Korea; Sunmin Kim, DMC R&D Center, Samsung Electronics Co. - Suwon, Gyeonggi-do, Korea
This paper introduces an adaptive binaural rendering algorithm that renders sound image into a desired location for user-interactive headphone listening. The proposed algorithm provides steady sound localization during the listener's head movement by minimizing both localization error and timbral degradation caused by filtering HRTF. It is achieved by direct-ambient separation of input channel signal and the corresponding HRTF filtering with desired reverberation to the listener's head position. By a set of experiments, it is shown that the proposed algorithm provides precise localization.
Engineering Brief 223 (Download now)

EB6-5 Computational "Drop" Detection in Modern Dance MusicAndrew Ortiz, University of Miami - Coral Gables, FL, USA; Colby N. Leider, University of Miami - Coral Gables, FL, USA
Many of today’s popular dance music records are identifiable by a ”drop”—a section of the song that is commonly the highest in both listener-perceived and actual signal energy. In this paper we examine several computational methods for locating the exact time at which the drop occurs in a given audio sample. Various metrics are compared and contrasted based on relevant audio signal features. This technology has potential applications within automated DJ software, online music streaming services, computational ethnomusicology research, and more.
Engineering Brief 224 (Download now)

EB6-6 RECUERDAMEJorge Sierra Aguilar, Sr., San Buenaventura - Bogota, Cundinamarca, Colombia; Eduard Enrique Ramirez Garcia, Universidad San Buenaventura Bogota - Bogota, Cundinamarca, Colombia; Juan David Valencia, Sr., Universidad San Buenaventura - Bogota, Cundinamarca, Colombia
The RECUERDAME is a portable practical tool intended for patients diagnosed with Alzheimer's disease in stages (GDS) 2, 3, 4, 5 (according to Global deterioration scale). This tool provides rehabilitation intervention and cognitive stimulation through a game that the patient plays so that, through the interaction of visual and auditory stimuli, s/he can recognize their family agents through the name requested by the device. This seeks to help reduce the cognitive impairment of a person with Alzheimer's disease. The device will be developed and pilot tested with patients for a generalized projection of treatments for this disease.
Engineering Brief 225 (Download now)

EB6-7 Measurements of Spherical Microphone Array Characteristics in an Anechoic RoomTomasz Zernicki, Zylia sp. z o.o. - Poznan, Poland; Lukasz Januszkiewicz, Zylia Sp. z o.o. - Poznan, Poland; Marcin Chryszczanowicz, Zylia sp. z.o.o. - Poznan, Poland; Piotr Makaruk, Zylia - Poznan, Poland; Jakub Zamojski, Zylia sp. z.o.o. - Poznan, Poland
This paper describes a measurements methodology of spherical microphone array designed and developed for the purpose of soundfield recording. Presented work mainly focuses on the practical aspects of the microphone array impulse response measurements in anechoic environment. The main assumption is that proper acquisition of impulse response coefficients provides crucial information about characteristics of microphones and acoustic shadow of the sphere. Registered impulse responses are further used for generating beam patterns and building a Higher Order Ambisonics microphone.
Engineering Brief 226 (Download now)

EB6-8 Sound Field Recording Using Wireless Digital Distributed Microphone ArrayMarzena Malczewska, Zylia sp. z.o.o. - Poznan, Poland; Andrzej Ruminski, Zylia sp. z.o.o. - Poznan, Poland; Piotr Szczechowiak, Zylia sp. z.o.o. - Poznan, Poland; Tomasz Zernicki, Zylia sp. z o.o. - Poznan, Poland
This paper presents development challenges when building a Wireless Acoustic Sensor Network (WASN) using common IoT devices (Beagle Bone Black). Such system can be used for sound field recording, audio object separation, tracking, etc. In our scenario we focus on recording multiple sound sources in case of a mobile recording studio. Major challenges are related to audio streaming from multiple sensors. Therefore, this paper is focused on analyzing a set of parameters including synchronization accuracy, end to end latency, packet loss, and audio compression efficiency. Experimental results have shown that it is possible to achieve synchronization at the level of micro seconds as well as end-to-end latency below 10 ms using the Opus codec.
Engineering Brief 227 (Download now)

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