XMOS' XK-VF3510-L71-AVS development kit for Amazon Alexa voice service (AVS) has a two-mic turnkey solution with far-field voice capture and close-range precision. The interference canceller nulls point-noise to cancel out typical noise in the soundscape. Stereo acoustic echo cancellation suppresses unwanted speaker echo and enables barge-in across audio playing from the device while noise suppression removes background noise from other devices. The automatic delay estimator adjusts audio reference signal latency dynamically, ensuring the acoustic echo cancellation algorithms deliver a smooth, real-time barge-in experience.
Please note: this kit requires Raspberry Pi 3 to run AVS SDK and sensory TrulyHandsFree wake-word engine, plus an Alexa developer account.
Features
- XVF3150 processor base board
- XVF3510 voice processor
- Micro-USB connector for power and USB device connectivity
- Low jitter audio quality clock
- Line-in port
- xTAG interface for JTAG debug
- Dual microphone array daughter board; 2x Infineon IM69D130 PDM (pulse density modulation) MEMS microphones (71 mm inter-mic spacing)
- Adapter board and Raspberry Pi HAT
- I²S audio and I²C connectivity
- 24-bit stereo DAC
- Four user-controlled buttons and two LEDs
- Interference canceller
- Noise suppression
- Automatic delay estimator control (ADEC)
- Automatic gain control (AGC)
XMOS' XK-VF3510-L71-AVS development kit for Amazon Alexa voice service (AVS) has a two-mic turnkey solution with far-field voice capture and close-range precision. The interference canceller nulls point-noise to cancel out typical noise in the soundscape. Stereo acoustic echo cancellation suppresses unwanted speaker echo and enables barge-in across audio playing from the device while noise suppression removes background noise from other devices. The automatic delay estimator adjusts audio reference signal latency dynamically, ensuring the acoustic echo cancellation algorithms deliver a smooth, real-time barge-in experience.
