The term frequency modulation is identified in base64 scheme by the sequence ZnJlcXVlbmN5IG1vZHVsYXRpb24=, while the MD5 signature is equal to 6583763ac2e0008c07d2e776d7c04de7. The ASCII encoding of frequency modulation in hexadecimal notation is 6672657175656e6379206d6f64756c6174696f6e.