Patent ID: 9253586
Filing Date: 2016-02-02
CPC Classification: G10H,H03G,H04S

Claim Text:
1. A method by an electronic device for controlling a frequency response of audio output, the method comprising: receiving an audio signal at the device; estimating a sound pressure level of the audio signal based on one or more attributes or settings of the electronic device and/or the audio signal; generating values of an adaptive loudness control curve along a range of frequencies, wherein the adaptive loudness control curve is generated based on a difference between values of an equal loudness curve at the estimated sound pressure level along the range of frequencies and values of an equal loudness curve at a reference sound pressure level along the range of frequencies, wherein the device has a substantially flat frequency response at the reference sound pressure level; filtering the audio signal using values of the adaptive loudness control curve; and controlling output of the filtered audio signal as an audio output having substantially the same loudness along the range of frequencies.