Title:
COUNTER-TALKBACK SYSTEM BASED ON DIRECTIONAL AUDIO
Document Type and Number:
WIPO Patent Application WO/2021/135781
Kind Code:
A1
Abstract:
Disclosed is a counter-talkback system based on directional audio, the system comprising at least one two way radio arranged on a counter, wherein each two way radio comprises a shell, the shell is provided with a mainboard, each two way radio is further internally provided with a first microphone, a first audio decoder, a first directional loudspeaker, a second microphone, a second audio decoder and a second directional loudspeaker that are separately connected to the mainboard, the first microphone, the first audio decoder, and the first directional loudspeaker face the inner side of the counter, and the second microphone, the second audio decoder, and the second directional loudspeaker face the outside of the counter. The first directional loudspeaker and the second directional loudspeaker of the present solution produce sound in a concentrated manner, the sound is propagated in a predetermined range, high definition is achieved, the sound produced coming from the two way radio is clearer on the inner side and the outer side of the counter, meanwhile, noisy sound coming from a traditional two way radio is also eliminated, and the counter-talkback system can be applied to indoor or outdoor counter directional voice speech or reminders.
Inventors:
LI ZHEN (CN)
SUN WENGUANG (CN)
SUN WENGUANG (CN)
Application Number:
PCT/CN2020/132662
Publication Date:
July 08, 2021
Filing Date:
November 30, 2020
Export Citation:
Assignee:
AUDFLY TECH SUZHOU CO LTD (CN)
International Classes:
H04Q5/24
Domestic Patent References:
| WO2018067531A1 | 2018-04-12 |
Foreign References:
| CN210725185U | 2020-06-09 | |||
| CN206332786U | 2017-07-14 | |||
| CN206516351U | 2017-09-22 |
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