Cirrus Logic launches development kit for Alexa voice services for smart speakers and smart home applications
Cirrus Logic launched a development kit for Alexa Voice Service (AVS), which is suitable for smart speakers and smart home applications, including voice control devices, hands-free portable speakers and network speakers. The voice acquisition development kit for Amazon AVS uses Cirrus Logic ’s IC and software design to help manufacturers quickly bring new Alexa products to the market. These new products can achieve high-precision wake word triggering even in noisy environments and music playback. And command interpretation function.
The low-power voice acquisition development kit for Amazon AVS includes a reference board using the Cirrus Logic CS47L24 smart codec and CS7250B digital MEMS microphone, and the SoundClear algorithm for voice control, noise suppression, and echo cancellation. The complete voice acquisition reference design further enhances the realization of “Alexa†wake-up word detection and audio capture functions under real conditions. Even in a noisy environment at a medium distance, users can reliably interrupt treble music or Alexa response playback. The smart codec uses an on-chip high-performance digital-to-analog converter (DAC) and a two-watt mono speaker driver for high-fidelity audio playback.
Priya Abani, Director of Voice Services at Alexa, said: "We are very pleased to work with Cirrus Logic to help OEMs apply Alexa to more smart speakers and other various audio devices. Cirrus Logic provides advanced voice acquisition development kits for Amazon AVS Acoustic tuning capabilities, as well as mature and reliable hardware and software, enable equipment manufacturers to bring products to market more quickly and efficiently. "
Carl Alberty, vice president of audio product marketing for Cirrus Logic, said: "With our experience in audio and voice ICs and software, we provide smart home application manufacturers with powerful and easy-to-use voice capture development kits to help them develop support Alexa's products. Our AVS development kit has excellent voice command performance. When combined with Cirrus Logic tools and software, it can help OEM manufacturers to bring Hi-Fi speaker products with excellent Alexa voice interactive functions to the market faster. "
Cirrus Logic voice acquisition technology helps further improve performance
Cirrus Logic's voice acquisition solution suppresses noise and other actual interference, and the voice interaction is more accurate and reliable, so that users can get a better experience. This technology enhances the "Alexa" wake-up word detection function in quiet and noisy environments, which can be achieved when the user is several meters away from the device. Cirrus Logic ’s echo cancellation technology enables users to “plug in†or interrupt high-pitched music playback and Alexa response, which is the key to an excellent user experience, so Alexa can accurately respond to new command requirements.
The ultra-low noise floor and wide dynamic range (130 dB) of Cirrus Logic ’s MEMS microphones ensure that it accurately captures speech under harsh noise conditions, allowing Cirrus Logic ’s SoundClear algorithm to mask the accuracy of Alexa ’s wake words and commands. Interfering noise.
Cirrus Logic's smart codec integrates Hi-Fi DAC, stereo headphone amplifier and mono speaker amplifier, helping OEMs reduce the cost of materials from high-end speakers to simple digital assistant products. The design fully considers the needs of ultra-low power portable devices and accessories, and its power consumption is generally 80% lower than competing solutions.
The kit is a complete solution. The voice acquisition board includes a high-performance dual-microphone array, Raspberry Pi 3 (Rpi3), speakers, and a microSD card with all the required firmware pre-installed. With this kit, production efficiency will be rapidly improved. . Cirrus Logic ’s console simplifies the operation of various RPi3 applications and provides a powerful, user-friendly interface for acoustic tuning and diagnostic functions. The schematic design and bill of materials of the voice acquisition reference board are designed for most AVS applications. Customers only need few customization changes, which further shortens the time to market.
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