The term cardioid microphone is identified in base64 scheme by the sequence Y2FyZGlvaWQgbWljcm9waG9uZQ==, while the MD5 signature is equal to f182d5dfd982ae84ef25d96ef9152968. The ASCII encoding of cardioid microphone in hexadecimal notation is 63617264696f6964206d6963726f70686f6e65.