Apparatus, method and storage medium for performing adaptive audio equalization

摘要

An apparatus, method and computer program where the apparatus includes a filter configured to filter an electrical input signal and provide a filtered electrical input signal to an audio output device; an audio output device configured to convert the filtered electrical input signal to an acoustic output signal; a microphone configured to detect an acoustic signal and provide an electrical output signal corresponding to the detected acoustic signal; and a detector configured to receive the filtered electrical input signal provided to the audio output device as a first input and the electrical output signal provided by the microphone as a second input; wherein the detector is configured to detect a change in the signal power of the electrical output signal provided by the microphone relative to the filtered electrical input signal provided to the audio output device and, in response to the detection of the change in the signal power, provide a control signal to the filter to control the filter to compensate for the detected change in signal power.

主权项

1. An apparatus comprising:
a filter configured to filter an electrical input signal and provide a filtered electrical input signal to an audio output device; the audio output device configured to convert the filtered electrical input signal to an acoustic output signal used to reproduce sound signals in a user's ear such that the filter is controlled to filter the electrical input signal to compensate for distortion in the acoustic output signal in response to a change in position of the apparatus relative to the user's ear where the change in position causes the distortion in the acoustic output signal; a microphone configured to monitor the sound signals in the user's ear to detect components of the acoustic output signal and provide an electrical output signal corresponding to the detected components of the acoustic output signal, wherein the microphone is positioned in proximity to the audio output device; and a detector configured to receive the filtered electrical input signal provided to the audio output device as a first input and the electrical output signal provided by the microphone as a second input; wherein the detector is configured to detect a change in signal power of the electrical output signal provided by the microphone relative to the filtered electrical input signal provided to the audio output device and, in response to the detection of the change in the signal power, provide a control signal to the filter to control the filter to compensate for the detected change in signal power; wherein the apparatus and the microphone are configured to be positioned adjacent to a user's ear; and wherein the change in the signal power of the electrical output signal provided by the microphone, relative to the filtered electrical input signal that is provided to the audio output device and detected by the detector, provides a frequency response measurement of a system comprising the user's ear and the apparatus used to compensate for the distortion in the acoustic output signal in response to the change in position of the apparatus relative to the user's ear.