The voice information in the Elevator station indicator is coded and decoded by PCM voice chip, and its encoding and decoding method is relatively simple. Moreover, the quality assured elevator station announcer is coded and decoded by PCM voice chip, and the voice information can be played through loudspeakers. The design of this elevator station announcer is relatively simple and the cost is low. What are the benefits of improving the technology of elevator station announcer?
1、Played audio with moderate speech speed and high information capture
The technicians of the elevator station announcer know in the actual test that the playback information of the elevator station announcer can be clearly visible to the passengers in the sedan car through the actual playback effect of a reasonable way. It not only guarantees the realization of elevator station announcer's basic function, but also saves the storage medium in the existing technology because of its low storage capacity, which further saves the cost, thus greatly reduces the cost of elevator voice station announcer.
2、Reduce the cost of the whole elevator voice station announcer
Further understanding shows that the elevator station announcer also includes circuit board, bottom and front panel; communication processing chip, PCM voice chip and level input port are integrated on the circuit board; circuit board is fixed on the bottom shell; loudspeaker is fixed on the front panel. The design method of this structure is simple and easy to realize. It can also save the cost of mechanical materials and further reduce the cost of the whole elevator voice station announcer.
3、Appropriate sound decibel control will not cause noise pollution
It is worth mentioning that in the implementation of the elevator station announcer, if the volume of the elevator voice station announcer is too small, the human ear may not be able to recognize, if the volume of the play is large, it is more noisy. Therefore, it is very important to control the volume of the elevator station announcer in a suitable decibel. In the actual test process, technicians found that if the volume is controlled at the appropriate decibel, the human ear can still respond when sampling at a lower frequency.
In a word, according to the actual sampling rate, the elevator station announcer can adjust the sound pressure level by keystrokes, so that the ear can clearly recognize the voice reported by the elevator voice station announcer, so that the elevator station announcer with good quality and after-sales service is more practical. It can be understood by ordinary technicians in the field of elevator station announcer that the above-mentioned implementation methods are important ways to realize the new elevator station announcer. In practical application, elevator station announcer can be changed in form and detail without deviating from the spirit and scope of the utility model.