Not able to access Respeaker USB mic v2 without sudo

How do I access the USB core without sudo ? It works fine when I run any script, say tuning.py with sudo, but raises following errors when I run witout sudo access.
raise USBError(_strerror(ret), ret, _libusb_errno[ret])
usb.core.USBError: [Errno 13] Access denied (insufficient permissions)
How do I fix this ?

Enter respeaker to continue. Select Activate a connection option from the list and press Enter . ReSpeaker Core v2.0 - WiFi - smart speaker.