Patent ID: 11864886
Assignee: ANALOG DEVICES, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC A  H | IPC A  H

Claim 0:
1. A system comprising:
a tone generator to:
receive an indication of a tone to be emitted from headphones, and
output a first signal to cause a speaker to emit the tone;

a digital-to-analog converter (DAC) to generate an analog signal indicative of the tone by converting a signal indicative of the first signal from a digital domain to an analog domain;
a speaker to emit the tone based on. the analog signal;
a microphone to detect the tone emitted by the speaker;
an analog-to-digital converter (ADC) to generate a digital signal. indicative of the tone detected by the microphone by converting a second signal indicative of the tone detected by the microphone from the analog domain to the digital domain;
a sound pressure level (SPL) measurement element to:
receive an indication of the tone detected by the microphone, and
determine are SPL of the tone detected by the microphone, wherein the SPL is to be used to verify that the SPL is equal to an intended SPL for the tone, the SPL measurement element being separate from and coupled to the microphone via at least the ADC; and

a compensation element coupled to an output of the tone generator, the compensation element to apply compensation to the first signal,
wherein each of the tone generator, the DAC, the speaker, the microphone, the ADC, and the SPL measurement element is integrated into the headphones.