1SV-2200T seriesmoduleIntroduction

Network IP intercom broadcast embedded audio decoding core moduleyesA high-performance 10/100M network audio module, usinghigh performanceARMProcessor and professional codecCan receive network audio data streams and convert them into audio analog signals for output. It can also sample local mic input or line in input and send it to the network for other network audio modules to receive and play, with CD grade playback sound quality.simultaneouslyprovidehigh performanceThe bidirectional audio data transmission facilitates the construction of a network voice intercom system.

We provide NAManager software for configuring IP addresses and other parameters of modules, and offer a secondary development dynamic library for the development of network audio broadcasting and network voice intercom systems.

SV-2201T/SV-2203TThe series of modules have very comprehensive interfaces, and users can develop their own proprietary network audio terminals almost without any circuits: self-service banking terminals, mine help terminals, network players, network on-demand terminals, network paging microphones, and so on.

Characteristics of System Working Software Environment:

• Easy to use: The audio devices in the system can directly broadcast and talk to other devices without relying on software platform support;

• Fast development cycle: Directly utilize our company's existing broadcasting intercom software system platform;

• Strong personalization: Develop users' own application software platforms using our company's SDK development kit.

Applied in the following fields:

• Network broadcasting system: Campus public broadcasting, traffic broadcasting system, safe city

• Network intercom system: Self service bank intercom system, mine emergency broadcast intercom system,trainSubway Vehicle Help Broadcast System, Outpost intercom system

• On site sound collection: Railway track sound collection systemEnvironmental audio

• Online music player:Smart home music playback, hotel background music playback, hotel room music system

becauseSV-2201T/SV-2203TseriesNetwork IP intercom broadcast embedded audio decoding core moduleThe audio stream uses a private protocol, and the entire system must use our company's audio equipment (intercom host, terminal, etc.), or our company's developed application software, or the user's own DLLApplication software developed with dynamic libraries, which can only run on WindOS operating system. Our company also hasSV-2700TSeries modules, supporting SIPStandard protocol, which can be easily compatible with other application software, including users writing their own application software to run in LinuxWaiting in the operating system.

SV-2201T/SV-2203TThe series of network audio modules support multiple communication methods such as unicast, multicast, and broadcast, and can be used to build audio systems within local or wide area networks.

2、 Function and Features

• Audio working mode:

audioDecode：That is, audio playback. Receive audio streams from the network, decode them through modulesOutput through linehigh qualityaudioSignal. currentlySupports playing the following audio formats:MP3WAV (PCM +IMA ADPCM)、 G. 711, G.722, etc. can play audio streams with a 48k sampling rate of 320kps.

Receive audio streams sent via broadcast, multicast, unicast, etc. in the network, decode them locally, and play them.

audioencoding： Collect audio signals from line input or mic input at a sampling rate of 8/16/24/32/48k, using ADPCM/PCMEncode and send it to the network.

Audio collection: Translate into EnglishLocal voicepassLine In collects and sends it to other audio terminals for playbackOr storage

： Through the network or other means, the control module sends local sound to other parts of the network

audiobidirectional transmission：Input the audio signal of the line or mic input at 8kOr 16The sampling rate of k is sampled, and ADPCM encoding is sent to the network through unicast or other methods. At the same time, the ADPCM audio stream of the other party is received, decoded, and output.

Bidirectional intercom： It can achieve intercoms between computers and devices, or two-way intercoms between devices. During intercom, the network audio module provides high-intensity echo suppression (AEC)）.

bidirectional transmission： passA pair of network audio devices that collect the sound of two live events and transmit them to each other for decoding and restoration

• Control method:

Button control:Directly control module intercom or recording through the IO port on the module

Serial port control:Control module intercom or recording through the control serial port on the module

Network control:Control the control module to talk or record through network commands on other devices on the network

• System status output:

Audio input and output status: can be connected to indicator lights or control relays.

Server connection indication

• Extended features (not all models support the following features):

POE power supply:Provide POE power module interface

SD card: Audio files can be transferred to an SD card via the network, timed, or played through network and serial port control

Universal IO: Control extended circuits or devices

Universal serial port: Control extended circuits or devices

Real time clock: Module power outage, or providing accurate time without server synchronization, obtained through serial port or network, or timed playback of audio files

3、 Technical parameters

• Power input: Voltage DC4.7～5.5V

bigWorking current,200mA

• Temperature: Temperature range for use: 0 to70℃(Industrial grade:-40~85℃）

Storage temperature range -40~85℃

• Network interface: 10/100M Base Adaptive Ethernet Interface

• Mic/LineIn input:Typical amplitude 1000mVrms, signal-to-noise ratio95dB

• Line Out output:Load 10K Ω, typical 1000Vrms,Signal to Noise Ratio 95dB(In playback mode)

• Decodepattern： Provide stereo soundplay，Big Gao 48kHz，320kbpsAudio stream, supports MP3PCM、 ADPCM and other formats.

The small delay is50ms

• encodingpattern： gao48kHz sampling frequency, ADPCM/PCMencoding

The small delay is 30ms

• bidirectionalpattern： bidirectionalIntercom with high-performance echo suppression algorithm,8kHz sampling, ADPCM encoding

The small delay is 80ms

• Control serial interfaceBaud rate 115.2kbps

• GPIO： 4 channelsUniversal IO，among which2Road input2Road output

• Universal serial port： Support transparent transmission, baud rate 2400-115.2kbps， 7-8 data bits, 1-2 stop bits, None, Even, Odd, Space, Mark checksum

• Module size： longX Width xHigh:5.2×4×1.5cm