Author: Site Editor Publish Time: 2025-03-13 Origin: Site
In the wave of IoT and intelligent construction, the SIP744T network active speaker launched by SINREY is becoming an ideal choice for audio management in public places with its excellent audio performance and flexible network adaptation capabilities. This terminal device designed for long-distance audio transmission deeply integrates SIP protocol technology and high-power audio output capabilities, providing efficient and reliable audio distribution solutions for smart buildings, transportation hubs and industrial scenarios.
1. Analysis of core technology architecture
SIP744T adopts a modular design concept, built-in high-performance digital signal processor (DSP) and 30W high-fidelity speakers, supports standard SIP protocol (RFC2543/RFC3261) and TCP/IP network protocol stack. The device is equipped with a standard 10/100M adaptive Ethernet interface, which can be seamlessly connected to the existing LAN or WAN environment to achieve cross-platform audio data interaction.
In terms of audio processing, the device supports broadband G.722 encoding, narrowband G.711a/u and MP3 decoding, and is compatible with Opus encoding and decoding (OEM customization required). The specially optimized echo cancellation algorithm can suppress acoustic feedback up to 60dB, ensuring clear sound quality in complex electromagnetic environments. By integrating the RTP multicast protocol stack, a single device can distribute audio streams to 10 preset priority areas at the same time to meet the differentiated broadcasting needs of multiple regions.
The power supply design adopts DC 12-24V wide voltage input, and the optional POE module can realize network cable power supply, which greatly reduces the deployment complexity. The device shell adopts aluminum alloy die-casting process, passes IP65 protection grade certification, and can operate stably in extreme temperatures of -40℃ to 85℃, which is particularly suitable for industrial application scenarios.
2. Diversified audio service modes
SIP744T supports four typical working modes, which can be flexibly switched according to actual needs:
SIP one-way intercom mode: as a controlled terminal, it receives command audio from the SIP server or SIP803T microphone to realize one-way communication from the main control center to the terminal
RTP multicast broadcast mode: one-to-many audio distribution is realized through the multicast protocol. Typical applications include background music playback in shopping malls and information broadcasting at transportation hubs
Private protocol broadcast mode: compatible with customized broadcast software, supporting special functions such as timed ringing and emergency calls
Hybrid service mode: supports standard SIP intercom and network audio streaming transmission at the same time, meeting the hybrid communication needs in complex scenarios
The device has a built-in intelligent power management module, the standby power consumption is less than 2W, and the energy efficiency ratio in the working state reaches the industry-leading level. Remote firmware upgrades and status monitoring can be realized through the SNMP protocol, and it can be deeply integrated into the SCADA system with the MODBUS/TCP interface.
3. Analysis of typical application scenarios
Smart park management: Deploy SIP744T in the factory area to form a zoned broadcasting system, and combine it with SIP803T microphone to issue emergency instructions in different areas. Actual measured data shows that its 30W power output can cover a radius of 200 meters in an open area, saving more than 60% energy compared with traditional analog broadcasting systems.
Railway transportation dispatching: Installed in key locations such as subway platforms and tunnel sections, it synchronously plays arrival prompts, safety warnings and other information through RTP multicast. The Opus encoding supported by the device can still maintain high sound quality in a low-bandwidth environment, and is particularly suitable for subway dedicated communication networks.
Commercial complex operation: Linked with the shopping mall POS system, promotional information or background music is played regularly in specific areas. By setting priority strategies, emergency broadcasts can immediately interrupt regular audio streams to ensure public safety.
Typical cases show that after 80 SIP744Ts were deployed in a large convention and exhibition center, the audio management efficiency increased by 50%, and the equipment failure rate was controlled below 0.3%. Its modular design supports hot-swap replacement, and single-point failure will not affect the overall system operation.
4. Technological innovation and industry value
The launch of SIP744T marks the entry of network audio terminals into a new stage of intelligence. Its core technological breakthroughs are reflected in three aspects: first, the optimal balance between network bandwidth and sound quality is achieved through dynamic bit rate adaptation technology; second, the spatial audio processing algorithm is used to optimize the multi-region broadcast effect; third, an open API interface is built to promote third-party application integration.
As an industrial-grade audio distribution device, SIP744T has both high reliability and economy. Compared with traditional analog speaker systems, its comprehensive deployment cost is reduced by 40%, and the maintenance cycle is extended by more than 3 times. With the continuous advancement of smart city construction, such smart audio terminals will play an increasingly important role in public safety, smart business and other fields.
