We need Japanese subjects|日本人の参加を必要です

Do you want to be part of a world-wide experiment that will help develop the algorithms used in the next generation of mobile telephony?
We’re recruiting now!Your task would be to rate a series of sounds, heard via headphones, using a specialized software in the computer music studio of the University of Aizu.- Don’t need experience
– Must be Japanese
– Any age
– Any gender
– Must not have hearing problems
– Expected date for the experiments: February
– We’ll pay ¥2,000 per hour (¥4,000 per 2 hour experiment)
– Personal information is not required

Your participation is highly needed.
Please contact Prof. Julián Villegas (Japanese OK):

(0242) 37-2608

indicating your name, telephone number, and email address.




• 未経験の方でも問題ありません。
• 日本人の方のみを対象とさせていただきます。
• 年齢は問いません。
• 性別も問いません。
• 聴覚に問題のない方のみ対象とさせていただきます。
• 実施は2月を予定しています。
• 1時間につき¥2000をお支払いいたします。
• 個人情報は不要です。



ジュリアン ヴィジェガス
電子メール: julian@u-aizu.ac.jp
電話番号: (0242) 37-2608

Open Campus demonstrations, Fall 2013

Saturday, Oct. 12 & Sunday, Oct. 13, 11:00-13:00

  • 328-E, 11:00-12:00
    1. Julián Villegas: Range-Modulated Transfer Functions for Spatial Sound
    2. Nakada Anzu & Nishimura Kensuke: CVE-Mathematica Interface Supporting Mobile Control
    3. Bektur Rysekeldiev: Spatial Sound on Mobile Devices
    4. Sasamoto Yuya: Reactable Spatial Sound Control
  • 328-F, 11:00-12:00
    1. Michael Cohen: Schaie Internet Chair
  • UBIC 3D Theater, 12:00-13:00
    1. Michael: Helical Keyboard
    2. Ohashi & Oyama: Musical Control with Spinning Affordances
  • 328-E, 11:00-12:00
    1. ジュリアン ヴィジェガス: 立体音響における伝達距離関数
    2. 中田 杏 & 西村 健亮: ネットワークプログラムシステムとMathematicaインターフェースがモバイルコントロールと対応する
    3. リスケリヂィエフ ベクトウル:携帯電話の立体音響
    4. 笹本 佑哉: Reactable Spatial Sound Control
  • 328-F, 11:00-12:00
    1. 公園 マイケル: インターネット椅子シミュレーター
  • UBIC 3D Theater, 12:00-13:00
    1. 公園 マイケル: 螺旋型鍵盤
    2. Ohashi & Oyama:  音楽をスマートフォンで回すインターフェイス

Binaural synthesis based on the spherical harmonic analysis with rigid microphone arrays seminar

We are pleased to sponsor a seminar this week about spatial sound.
All are welcome.

Date: Friday, Sept. 27

Location: S1 (275)

Time: 1440-1540 (2:40-3:40 pm)

Speaker: César D. Salvador

Affiliation: Research Institute of Electrical Communication and Graduate School of Information Sciences, Tohoku University, Sendai

Among 3D audio techniques, binaural synthesis aims to reproduce auditory scenes with high levels of realism by including the external facts of human spatial hearing. Basic perceptual cues for a spatial listening experience arise from the scattering, reflections and resonances introduced by the pinnae, head and torso of the listener. These phenomena can be described by the so-called Head-Related Transfer Functions (HRTFs). Typical measured sets of HRTFs, though, neither include the motion of the head nor provide the listener with enough spatial resolution, characteristics that are required, for example, in the accurate reproduction of moving sound sources. Several approaches that sidestep these two limitations have been proposed. They are based on the recordings made with microphones placed on the surface of a rigid sphere, and the angular interpolation of HRTFs from a representative set of sound sources in the distal region (beyond one meter distance from the head). However, the optimal arrangement of the representative sound sources, and the synthesis of binaural signals for sources in the proximal region (less than one meter distance from the head) has not yet been addressed. We introduce a novel method to synthesize the left and right ear signals for sound sources in both the distal and proximal regions. The synthesis is performed from the sound field captured by a rigid spherical microphone array. The present proposal exploits the directional structure of the captured sound field by means of its decomposition into spherical harmonics functions with high directivity (high order).

César D. Salvador received the B.Sc. degree in Electrical Engineering from Pontifical Catholic University of Peru in 2005, the M.Sc. degree in Information Sciences from Tohoku University in 2013, and early October will start the Doctor Course in the Graduate School of Information Sciences at Tohoku University. He was a Researcher with the Faculty of Communication Sciences at University of San Martin de Porres, Peru, from 2008 to 2010, where he led an Immersive Soundscape Project. His research interests include spherical acoustics and spatial hearing.