No, you do not need to install avs, for the respeakerd audio processing, Please refer to <LINK_TEXT text=“GitHub - respeaker/respeakerd: respeakerd is the server application for the microphone array solutions of SEEED, based on librespeaker which combines the audio front-end processing algorithms. … _MANUAL.md”>respeakerd/doc/DEVELOPER_MANUAL.md at master · respeaker/respeakerd · GitHub</LINK_TEXT>. thanks.