Multifunctional Telephone Conference System and Video Conference Design Solution Reference

The solution is designed to address the high cost and single function of the current telephone conference system on the market. The low-cost, versatile USB sound card plus echo cancellation chip solution can not only be used for telephone conferences on computers and mobile phones, but can also be directly used for video conference calls when connected to any Android box or Android TV. The design uses a USB sound card chip model HXJ6148 and an echo cancellation chip model ATH8809. The HXJ6148 sound card chip is powerful and can not only be used on computers, but can also directly replace the sound card driver of the Android system, so that the product is not limited to telephone conference systems, but can also be plugged into any Android TV to become a video conference system. The ATH8809 echo cancellation chip can eliminate the echo and howling caused by the speaker sound entering the MIC during hands-free calls. This chip can not only eliminate echoes up to 70db, but also eliminate environmental noise of about 25db, thereby ensuring that the call is not disturbed by the environment and improving the call quality.