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Upgrade your walkie-talkie to a more intuitive intercom device with Telink’s TLSR9517 SoCs.

Walkie-talkies have been a staple for simple multi-user, close-range communication for almost a century thanks to their reliability, ease of use, and independence from network signals. Even with the advent of smartphones and other handheld devices, walkie-talkies have become the dominant choice for users in need of a quick communication system to coordinate complicated events like sports games, film sets, and large-scale parties. However, these devices aren’t without their flaws.

As many walkie-talkie users may have realized, channel interference and the inability of users to relay messages simultaneously have limited seamless communication. This is one of the reasons Telink developed the TLSR9517 series — a line of SoCs that address these concerns while elevating the voice and audio experience. Let’s take a closer look at how these SoCs help developers facilitate better intercom networks.

Telink’s TLSR9517 Multi-User Network Intercom Solution

As part of Telink’s other line of ultra-low-power and high-performance SoCs, the TLSR9517 has a 32-bit RISC-V MCU and is compatible with various Bluetooth protocols, including Bluetooth^® Classic, Bluetooth^® LE, Bluetooth^® LE Mesh, and Auracast^TM Broadcast Audio, as well as Enhanced Data Rate and Basic Rate. It’s also designed with multi-stage power management in mind, enabling developers to leverage this technology in a variety of low-power applications.

Other notable features include:

• Stereo audio codec
• UP to 15/13/28 GPIOs
• Dual digital mic
• Support for analog mics
• 24-bit 192 kHz I2S
• Serial peripheral interface (SPI)
• I2C
• Long-range support with 125 kbps and 500 kbps data rate
• Supports G.711, A-Law, u-Law, CVSD, and mSBC voice codecs
• Supports SBC, OPUS, and LC3 audio codecs
• Support for noise suppression, echo cancellation, and packet loss concealment (PLC)

These features make the TLSR9517 series a useful tool in developing headsets, earbuds, and intercom systems that need to function well within close proximity without a network connection. 

Telink takes this a step further by supporting the latest Bluetooth protocols, harnessing power-saving technology, enhancing audio quality, and housing all communication within a 2.4G private protocol. Currently, this SoC series can connect up to 5 devices at once, but future improvements aim to expand this number to 24 devices. What’s more, devices crafted with the TLSR9517 series can enjoy simultaneous voice communication without needing to press buttons.

Telink’s TLSR9517 Series in Action

Our TLSR9517 chip has been used in several audio products, including the Saramonic Blink500 ProX B2 wireless microphone, which uses Telink’s TLSR9517B and TLSR9517C wireless audio SoCs for high fidelity and high anti-interference audio transmission. The Soundcore VR P10 wireless earbuds also leverage our TLSR9517 chips to achieve a wireless transmission of less than 30ms within a variety of Bluetooth environments.

Recently, the SYNCO Xtalk X5 wireless intercom headset utilizes Telink's TLSR9517 solution to resolve frequency crossover issues and expand one-way calls to multi-user communication. Best used in venues like conferences, exhibitions, sporting events, live broadcasts, film sets, and other complex logistical environments, the SYNCO Xtalk X5 intercom headset carries out full-duplex voice calls within a circular range of 700m in diameter.

It’s also able to connect instantly to other devices when powered on, can easily switch between being a transmitter or receiver, and opens independent communication channels with individual devices. Additionally, the SYNCO Xtalk X5 intercom headset comes with a noise reduction depth of up to 40dB, supports 3.5mm audio interface local monitoring, and is equipped with a 1050mAh battery to support up to 24 hours of continuous use.

Elevate Intercom Communications with Telink

As our lifestyles evolve, many traditional products face obsolescence due to changing demands. Telink’s TLSR9517 series represents a leap in close-range, real-time communication, offering fast, clear, and stable voice and audio transmission that enhances team collaboration and activity coordination. As solutions like the TLSR9517 become more widely adopted, they will redefine the intercom experience to match the instant, convenient, and reliable technology users today expect.

Visit the official TLSR9517 datasheet for more information, Telink’s wiki for development resources, or contact us directly today.