User identification with audio earbuds

One or more non-transitory computer-readable media storing instructions executable to perform operations, the operations comprising:

• emitting a transmitted audio signal from a speaker at a first earbud;
• receiving a filtered audio signal at a microphone in a second earbud, wherein the filtered audio signal is filtered by a user head;
• determining an audio signal spectrum of the filtered audio signal;
• comparing the audio signal spectrum with a user spectral template;
• determining the audio signal spectrum is a match for the user spectral template;
• and
• identifying the user.

An apparatus, comprising:

• a computer processor for executing computer program instructions;
• and
• a non-transitory computer-readable memory storing computer program instructions executable by the computer processor to perform operations comprising:
• emitting a transmitted audio signal from a speaker at a first earbud;
• receiving a filtered audio signal at a microphone in a second earbud, wherein the filtered audio signal is filtered by a user head;
• determining an audio signal spectrum of the filtered audio signal;
• comparing the audio signal spectrum with a user spectral template;
• determining the audio signal spectrum is a match for the user spectral template;
• and
• identifying the user.