3 results about "Sound reinforcement system" patented technology

Improved adaptive feedback cancellation may be used to improve performance of audio amplification systems, such as hearing assistance devices, sound reinforcement systems, telephony, and other acoustic amplification and reproduction systems. This adaptive feedback cancellation allows a significant increase in the maximum stable gain of the amplification system, such as by increasing gain while reducing or eliminating feedback. This improves the audibility provided by an audio amplification system. This may provide particular improvements for hearing assistance devices that include open fittings or otherwise have substantial acoustic leakage. This adaptive feedback cancellation provides additional protection from a dynamically changing acoustic leakage by continually updating itself to model the changes, thereby providing increased gain while reducing or eliminating feedback.

The invention discloses a structure for compressing a high-pitch horn, and belongs to the field of electroacoustic transducers. The structure comprises a horn body, and is characterized in that the contour line of the inner wall of the horn is divided into two sections with different functions, namely a high-frequency control section close to a throat and a diffusion form section close to a mouth part. The high-frequency control section is composed of strong influence line segments with precisely limited geometric parameters and is specially used for controlling high-frequency acoustic performance; the diffusion form section is composed of weak influence line segments which can be flexibly adjusted and is mainly used for controlling the sound wave diffusion form. According to the design method, high-frequency performance control and physical size and diffusion design are decoupled, so that flat frequency response and low-distortion characteristics can still be realized under the condition that the axial height is limited. In addition, the bridge mounting structure is integrally formed outside the horn body, so that the horn body and the mid-bass unit can be integrally mounted conveniently. The invention is especially suitable for small and medium-sized professional sound amplification systems with strict requirements on volume.

The application provides a small venue sound amplification system building method and device, the method comprises the following steps: based on the initial building scheme, an initial sound amplification system is built in the target scene, and acoustic data is obtained by performing acoustic acquisition in the target scene; a multi-dimensional acoustic matrix is constructed based on the acoustic data; the multi-dimensional acoustic matrix is input into a preset feature processing model to obtain a one-dimensional first acoustic matrix; a working feature matrix is constructed based on the arrangement position and working parameters of the sound amplification facilities in the initial building scheme; an input feature is constructed based on the working feature matrix and the first acoustic matrix, the input feature is input into a preset parameter adjustment model, the parameter adjustment model outputs a feature adjustment matrix, the feature adjustment matrix corresponds to the working feature matrix, and the arrangement position and working parameters of each sound amplification facility are adjusted based on the feature adjustment matrix.