Design and Implementation of Voice Processing Technology in 2.4G Digital Wireless Intercom System of The Two Way Radio Walkie Talkie Digital wireless walkie-talkie under the private network mobile communications, and mobile phones, cordless phones and other public network mobile communication is different from the cost of any call, and has no wiring, networking is simple, good confidentiality, high spectrum utilization advantages. At present in some busy locations (such as the bank business hall), business people often need one to one communication, traditional equipment or ordinary digital wireless walkie-talkie difficult to meet their price and ease of operation needs. So the design of a voice operation with low-cost, low-power dedicated digital walkie-talkie has important research significance and application value. Based on the system structure and working principle of digital wireless walkie-talkie, hardware selection is realized from the viewpoint of low cost and low power consumption. It is applied to digital wireless walkie-talkie based on 2.4G radio frequency chip, so as to realize duplex walkie-talkie. (1) How to reduce the power consumption of the system, this paper proposes a strategy to increase the low power consumption control and G.721 speech coding in the system to reduce the power consumption of the system, and through the establishment of embedded system power statistical model analysis of the Method can effectively reduce the system power consumption. (2) In view of the problem that the call quality is degraded by packet loss in voice communication, this paper studies the characteristics of voice packet loss processing technology and 2.4F radio frequency chip NRF24L01. It is proposed that the interleaving technology, retransmission technology and packet replication technology Combined with the program. (3) Based on speech recognition technology, this paper presents a digital wireless walkie-talkie program with voice recognition. The program allows users to use the voice-activated walkie-talkie when the traffic is busy, thus improving the user's productivity. (4) the experimental board, and its system power consumption, voice quality, communication distance and speech recognition rate test, the test results show that this design of digital wireless intercom system to achieve the desired goal. our factory.jpg If you are looking for the two way audio tour guide system manufacturers, Rich Technology must be your best choice. We're known as one of the leading China manufacturers and suppliers, offering you the customized service at low price. Welcome to buy or wholesale the quality guide system at a discount with our factory.
