NAU8820EVB

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NAU8820EVB is an evaluation and demonstration board and kit based on the NAU8820 voice processor IC. It is designed to evaluate the features and functions of the NAU8820 and demonstrate its line-in and line-out audio processing capabilities. The NAU8820EVB board and kit features a STM32 Microcontroller, Class D amplifier, digital/analog audio connections, audio headphone output jack, and USB interface to a personal computer for loading program code.

The NAU8820EVB can be used to demonstrate a variety of applications including audio mixing, signal amplification, digital/analog audio processing, acoustic echo cancellation, and other audio processing functions. The NAU8820 EVB is capable of mixing up to eight audio channels using either digital or analog inputs, and provides output connections for stereo loudspeakers or earphones. Additionally, it can perform real-time variable equalization, compression, and limit functions.

The NAU8820 EVB operates on very low power and can be powered by a USB connection or an external 3.3V power supply. It also supports multiple processing modes such as stereo playback and multi-channel capture. The user can also select the sample rate and the buffer size for the NAU8820 EVB to achieve different performance results.

The working principle of the NAU8820 EVB is based on the NAU8820 Voice Processor IC. This IC relies on an internal voice processor core that integrates an audio CODEC, stereo line-in and output channels, gain control, and a clock signal for digital audio. Additionally, the NAU8820 Voice Processor IC also includes a programmable, 16-channel mix bus with adjustable equalization, compression, and level controls. A simple, low-cost microcontroller is used to run the NAU8820 EVB board, while an STM32 microcontroller controls the audio input/output channels.

The NAU8820 EVB board and kit is suitable for a wide variety of uses, from basic audio mixing to complex signal processing use-cases such as acoustic echo cancellation. Its small size and low power consumption makes it suitable for use in portable applications, as well as embedded audio applications. It is also suitable for use in a wide range of professional audio applications such as in live sound, music production, broadcast, and audio post-production.

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