北京朗德科技有限公司

Acoustic Laboratory

Landtop Technology has long been committed to independent innovative research on acoustic testing technologies and test environments, supplying customers with advanced, professional and comprehensive solutions for acoustic test environments. The advanced technologies and concepts of acoustic test environments developed by Landtop Technology have been gradually adopted by the International Organization for Standardization in relevant standards (such as ISO 3745 and ISO 354). We are also capable of delivering laboratory schemes catering to special testing requirements. We have in-depth expertise in the planning, design and engineering construction of acoustic laboratories, with abundant practical experience in full-process turnkey projects that have been fully delivered and put into operation.

Full Anechoic Chamber

A full anechoic chamber is a facility fitted with special sound-absorbing structures on all six interior surfaces to minimize sound wave reflections, thereby simulating an acoustically infinite free-field space. As critical infrastructure for high-precision acoustic measurements, full anechoic chambers are widely adopted in audio, electronics and other industries. The core technical parameters of an anechoic chamber tailored to research and measurement requirements include cut-off frequency, free-field range and background noise level.
Semi-Anechoic Chamber

A semi-anechoic chamber is equipped with special sound-absorbing structures on five of its six interior surfaces to minimize sound wave reflections, forming a free sound field equivalent to a semi-infinite space above a reflective plane. As vital infrastructure for high-precision acoustic measurements, semi-anechoic chambers are widely used in industries such as electromechanical products and household appliances. According to research and measurement requirements, the core technical parameters of a semi-anechoic chamber include cut-off frequency, free-field range and background noise level.
Reverberation Chamber

A reverberation chamber is required when measuring, analyzing, researching or evaluating the performance of test specimens or sound sources demands that the sound field at each receiving point be independent of spatial position. That is to say, a diffuse sound field features position-independent acoustic properties: uniform energy density and equal energy flux, as well as random phases of all sound waves arriving at any given point.
Listening Room / Recording Studio

Listening rooms and recording studios are spaces with professional acoustic design and optimization, mainly used for high-fidelity music appreciation, audio production, post-production of film and television, or professional monitoring. Their core objective is to control the acoustic environment, reduce distortion and interference, and realize accurate sound reproduction.
Sound Absorption Structure

The acoustic laboratories supplied by Landtop Technology are equipped with broadband composite absorbers (BCA) or asymmetric sound absorbers (ASA), both of which have been mass-produced stably for many years. This reactive absorber technology was jointly developed by Landtop and IBP, and multiple international patents have been granted in Europe and the United States (Patent Numbers: US5975238, US 6793037 B1, US 6073722, EP 0811097B1, DE10213107 A1, DE19861016 C2).
Sound Insulation Structure

Landtop Technology Standard Sound Insulation Structure STB100.

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