Description: [Advanced Audio Technology]: The Voice Recognition Base is equipped with an ES8311 mono audio decoder, MEMS mic, and NS4150B power amplifier. This combination ensures fidelity audio processing with 24 bit resolution and a sampling rate of 16KHz-64KHz, ideal for precision voice recognition applications [Seamless Voice Interaction]: This base supports full duplex communication, allowing simultaneous sending and receiving of audio signals. This feature enhances interactive functions such as voice recognition, wake up commands, and recording playback [Versatile Development Platforms]: Compatible for 1.0 or 2.0 and for IDE, the Voice Recognition Base offers flexibility for developers to create custom AI voice interaction systems or solutions [Compact Design]: With dimensions of just 2.4cmx2.4cmx1.414cm or 0.94inchx0.94inchx0.56inch and made from PC material, this device is compact yet sturdy enough to fit seamlessly into various environments without compromising performance [Comprehensive Package]: The package includes 1 main unit that integrate all necessary components for immediate deployment in AI voice recognition systems or educational projects focused on smart technology applications Specification: Audio codec: ES8311: 24 bit resolution, using 12S MEMS mic: MSM381A3729H9BPC  Signal to noise ratio (SNR):>65dB Power amplifier: NS4150B: Class D power amplifier Speaker: 2014 type cavity speaker: 1W 8Q Standby current: DC3.3V or 3.36mA Working current: DC3.3V or 14.84mA Working temperature: 0-40°C Product size: 2.4cmx2.4cmx1.414cm or 0.94inchx0.94inchx0.56inch Size Chart: 2.4cmx2.4cmx1.414cm or 0.94inchx0.94inchx0.56inch Package Includes: 1X Voice Recognition Base Note: Please allow slightly errors 1-2cm or 0.39-0.79inch differences due to manual measurement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.