The term fundamental frequency is identified in base64 scheme by the sequence ZnVuZGFtZW50YWwgZnJlcXVlbmN5, while the MD5 signature is equal to 7b97b3c1c8e1ccf3765798ddaf74a8ce. The ASCII encoding of fundamental frequency in hexadecimal notation is 66756e64616d656e74616c206672657175656e6379.