Trolley Speaker Applied Technology

The directional controllability of acoustic radiation can be said to be the main technical dividing line between modern professional loudspeaker and traditional loudspeaker equipment. Trolley Speaker The improvement of the technology of directional control has many aspects in the latest generation of international products.

It is interesting to note that directional control has focused more on the horizontal direction on the basis of past vertical focus. The Bose Roommacth and Showmatch series is a typical technical scheme that enables bidirectional control of vertical and horizontal directivity by assembling various directional acoustic modules for the loudspeaker line array.

Using the signal processing method to control the speaker's directivity first appeared in the sound column products which are more easy to satisfy the relationship between the coherence frequency wavelength and the loudspeaker spacing, which was developed by Duran, Renkus-heniz and other manufacturers, and then Tannoy, CVS and so on, and developed to the present, Many of the original point sound source and line array of brands, Trolley Speaker such as Meyersound, Kling&freitag and so on have launched such products, and become a very mature and widely used technology, Meyer Sound Cal series as an example, As a beam number and directivity are controllable sound column products, the horizontal coverage angle of its single beam is 120°, the vertical cover angle is 5°~30° adjustable (increment is 5°), Trolley Speaker the point angle is ±30° adjustable (increment is 1°), and the frequency rang range is $number hz~15 kHz (±4 DB), Ability to provide sound playback performance.

The frontier of directional control technology is more intelligent adaptive technology, in addition to precise control of the directivity of the line array speaker, Trolley Speaker the adaptive function breaks the repetitive cycle of "Array assembly → field measurement → assembly adjustment → on-site measurement" in the past engineering application, by combining simulation and optimization techniques, Based on the software and digital signal processing platform, the automatic adjustment parameters are calculated, and the Target sound field is optimized, and each work step reduces the workload of the design and debugging personnel through the calculation of auxiliary design and automatic optimization.

Microphone field of digital wireless technology has become mature, low delay full digital coding transmission and adaptive frequency hopping technology to the wireless microphone communication reliability has been upgraded to a new level. The digital wireless microphone system, which is suitable for stage performance, has the characteristics of reliable communication, Trolley Speaker convenient operation and low delay. The D1 system uses 2.4 GHz bands, can be compatible with up to 15 channels, with multiple transmission mechanism, and 133 times per second, Trolley Speaker with rapid automatic frequency management to provide flexibility for stage performers while transmitting sound signals stably and reliably; In addition, intelligent gain control technology can extend the dynamic range to $number DB. The new G3 system, released in 2016, uses the A1 band to support up to 32 wireless links at run time to accommodate more complex stage scenarios.