30 results about "Architectural acoustics" patented technology

The invention discloses a method for manufacturing an architectural acoustics 1: 10 reduced ruler head and torso simulator. The method comprises the first step of scanning a full-size standard head and torso simulator prototype through a three-dimensional laser scanner and storing the scanned data file as a DXF; the second step of guiding the DXF into a 3DMAX so that three-dimensional patch editing can be carried out on the DXF and an accurate three-dimensional curved surface digital model of the head and torso simulator can be obtained, wherein an auditory meatus is reserved in the head and torso simulator in the process of modeling; the third step of manufacturing the 1: 10 reduced ruler head and torso simulator through a 3D printing machine according to the designed three-dimensional digital model in a proportional zooming mode; the fourth step of vertically placing two microphones connected with rotary unions into the auditory meatus pre-reserved in the 1: 10 reduced ruler head and torso simulator to serve as a binaural signal receiver simulating the full-size head and torso simulator; the fifth step of plugging filler into a chest of the 1: 10 reduced ruler head and torso simulator. The 1: 10 reduced ruler head and torso simulator can be used for measuring hall space sense parameters in an acoustics reduced ruler model experiment and will be applied to the auralization technology.

The invention discloses a carbide slurry fly ash fiber-reinforced architectural flat plate and a manufacturing method thereof. The carbide slurry fly ash fiber-reinforced architectural flat plate comprises the components in percentage by weight as follows: 36 to 45 percent of carbide slurry, 42 to 48 percent of fly ash, 6 to 8 percent of cement, 5 to 8 percent of quartz sand, 6.5 to 9 percent of cellulose fiber and 1 percent of poly-acetamide. The manufacturing method of the carbide slurry fly ash fiber-reinforced architectural flat plate comprises the following steps: step I, fiber refinement; step II, material feeding and pulping according to a formula; III, pulp storage, pulp discharge, pick-up and forming; step IV, processing forming; and step V, coating and packaging. The invention has the advantages that by utilizing local industrial waste namely the carbide slurry and the fly ash as main raw materials and utilizing the cellulose fiber as a reinforcing material, the architectural flat plate which has a shrinkage deformation coefficient larger than that of an ordinary calcium silicate plate, and better fireproof performance is produced; the radioactivity measured value of the architectural flat plate is 10 to 20 percent of the minimum value allowed by a national regulation, so that the architectural flat plate belongs to green environmentally-friendly products; and not only the production process satisfies the requirement of circular economy, but products are plates for the fields of wall bodies, ceilings and architectural acoustics, which satisfy the requirements of componentization, assembly and dry work for architectural products, so that the architectural flat plate belongs to high-level architectural material products in the architectural products.

The invention relates to the field of architectural acoustics, in particular to a light sound-absorbing jacketed wall structure. The light sound-absorbing jacketed wall structure comprises a sound isolating layer keel fixed to a wallspace, double-layered gypsum boards are fixed to the outer side of the sound isolating layer keel, a sound absorbing layer keel is arranged on the outer side of the sound isolating layer keel, a gap is reserved between the double-layered gypsum boards and the sound absorbing layer keel, two telescopic gratings are arranged in the gap, one side end of each telescopic grating in horizontal direction is fixedly connected to a wall while the other side end is movable, the two telescopic gratings are fixedly connected to opposite two ends of the wall, separately, the two telescopic gratings can cover the whole straight wall space, a plurality of corrugated boards are vertically fixed in an equally spaced manner on each telescopic grating, and the corrugated boards are vertical to the wall space. The sound absorbing effect is improved by increasing density of the corrugated boards on the telescopic gratings, so that the reverberation time is shortened.

The invention relates to a microphone linear array and especially relates to the microphone linear array for sound scattering coefficient site test. The invention aims to solve the technical problems that the current sound scattering coefficient measurement has high requirement for material shape of test piece, the processing cutting is time-wasting and labor-wasting and the test period is long. According to the technical scheme provided by the invention, the microphone linear array for sound scattering coefficient site test comprises a U-shaped fixing bracket, wherein a rotatable triangular bracket is mounted at one end of the U-shaped fixing bracket; an angle adjusting disc is mounted at the other end of the U-shaped fixing bracket; connecting brackets are arranged on both triangular bracket and angle adjusting disc; a microphone mounting plate is fixed on the connecting brackets; a hole is formed on the microphone mounting plate; a microphone is fixedly mounted on the microphone mounting plate through a rubber sleeve. The microphone linear array for sound scattering coefficient site test can be applied to the site detection for irregular sound scattering coefficient of the sound diffuser in the field of architectural acoustics and also can be applied to the site test for the irregular sound scattering coefficient.

The invention relates to an isostatic signal processing method for compensating a small-space audition acoustical environment. In order to realize indoor sound field signal processing based on a digital signal processing method, acquire playing signals for sound field isostatic compensation, and perform reverberation processing, the main technology namely the isostatic signal processing method comprises the following steps of: (1) correctly establishing key problems of an indoor autoregressive (AR) model, namely acquiring indoor response signals and selecting the order of the AR model; and (2) on the basis of a compensation algorithm structure of the model, realizing a reverberation processing method based on frequency response isostatic compensation. The equalizing signal processing method is different from an indoor sound field processing method of an indoor architectural acoustics design, and can be used for realizing corresponding sound field compensation processing for different acoustic rooms flexibly, and achieving different effects such as reverberation and the like according to different audition requirements.

The invention discloses an active non-directional loudspeaker system with equalization, which includes an audio signal interface connected with a digital filter, the digital filter includes an inverse equalizer and a band-pass filter, and the digital filter is connected to There is a power amplifier, which is connected to the speakers, which include a counterhorn and a subwoofer. The invention is small in size and only works within the test frequency range required by relevant standards; by testing the spatial multi-point transfer function of the loudspeaker, and designing a digital signal filter system according to the multi-point transfer function, the amplitude frequency of the digital signal filter system The response is reciprocal to the amplitude frequency response of the omnidirectional speaker system on the peak and valley, so that the amplitude frequency response of the speaker system is relatively flat and the amplitude change of adjacent frequency bands is small; it can be used in architectural acoustics and electrical sound test.