摘要:
Provided are acoustic obstruction prevention equipment for preventing acoustic obstruction by appropriately designing a surface structure of elemental surfaces that surround a space or a surface structure of an acoustic diffuser, and a design method thereof. A plurality of elemental surfaces that form wall surfaces, a ceiling surface, or a floor surface which surround a space are provided. An angle mutually formed by the elemental surfaces is nα (n is a natural number), and acoustic obstruction is prevented by reflection between the elemental surfaces. ϕ=(1+sqrt(5))/2, α=360° ∗ 1/(1+ϕ). This technique may be used for a plurality of other elemental surfaces that form an acoustic diffuser disposed in a space. Furthermore, the acoustic diffuser may also be formed by rotating and disposing a plurality of units at the above-described angle multiple times.
摘要:
Provided is an information processing apparatus that carries out a process of deriving a head related transfer function. The information processing apparatus includes a detection unit that detects a position of a head of a user, a storage unit that stores a head related transfer function of the user, a determination unit that determines a position of a sound source for measuring the head related transfer function of the user based on the position of the head detected by the detection unit and information stored in the storage unit, a control unit that controls the sound source to output measurement signal sound from the position determined by the determination unit, and a calculation unit that calculates the head related transfer function of the user based on collected sound data obtained by collecting, at the position of the head, the measurement signal sound output from the sound source.
摘要:
A sound-field correction device, comprising: a target calculating means that calculates, based on a predetermined sound signal, a target amplitude characteristic targeted for sound-field correction by a parametric equalizer and a plurality of auxiliary target amplitude characteristics having amplitude characteristics approximately equal to or gentler than the target amplitude characteristic; a correction amplitude characteristic calculating means that calculates a correction amplitude characteristic for correcting sound-filed based on the calculated target amplitude characteristic and the plurality of auxiliary target amplitude characteristics; and a setting means that sets the parametric equalizer based on the calculated correction amplitude characteristic.
摘要:
The present invention discloses a method and a system (2) for resolving a crystal structure of a crystal (4) at atomic resolution by collecting X-ray diffraction images, comprising: a) ejecting a droplet (8) of fluid comprising single or multiple of crystal (4) into an ultrasonic acoustic levitator (6); b) levitating said droplet (8) of fluid comprising said crystal (4) in an ultrasonic acoustic levitator (6); b) monitoring the position and the spinning of the droplet (8) with a visualization apparatus; c) applying X-ray (20) to said crystal (4), said X-ray (20) stemming from an X-ray source (34); and d) detecting the X-ray diffraction images (24) from the said crystal (4) irradiated by the said X-ray source (34) by an X-ray detector (36) being capable to capture two dimensional diffraction patterns.
摘要:
A user interface device includes: a display unit that displays a user interface screen associated with a first coordinate axis, the first coordinate axis corresponding to a first attribute of a sound field and being allocated with a plurality of parameters related to the first attribute; a first specification unit that specifies a coordinate value of the first coordinate axis corresponding to a position in the user interface screen specified by a user; and a second specification unit that specifies a value of each of the plurality of parameters, based on the specified coordinate value.