Method and system for loudness compensation
AssigneeApple Inc.
InventorsZhangli Chen, Brandon J. Rice, Jarrett B. Lagler, Jakub Mazur
Life of this patent
Estimating the term…
Abstract
A method performed by an audio system that includes a headset for playing back audio, the method includes receiving an audio signal having audio content, determining a characteristic of the audio content, determining a parameter of the headset, producing a filtered audio signal by applying an equalization (EQ) filter to the audio signal based on the characteristic of the audio content and the parameter of the headset, and driving one or more speakers of the headset with the filtered audio signal.
Claims20
A method performed by an audio system comprising a headset for playing back audio, the method comprising:
- receiving an audio signal having audio content;
- determining a characteristic of the audio content;
- determining a parameter of the headset;
- producing a filtered audio signal by applying an equalization (EQ) filter to the audio signal based on the characteristic of the audio content and the parameter of the headset;
- and
- driving one or more speakers of the headset using the filtered audio signal to produce sound at a first playback output level, wherein the sound produced at the first playback output level has a same tonal balance as the sound produced at a second playback output level.
A non-transitory machine-readable medium having instructions which when executed by at least one processor of an audio system comprising a headset causes the audio system to:
- receive an audio signal having audio content, the audio signal for driving one or more speakers of the headset;
- receive a volume setting of the audio system;
- determine, using a psychoacoustic model that has input based on the audio content and the volume setting, a first equalization (EQ) filter and a second EQ filter, wherein,
- the first EQ filter for applying a first set of gains across a first frequency range, and
- the second EQ filter for applying a second set of gains across a second frequency range that is higher than the first frequency range;
- and
- produce a filtered audio signal by applying the first and second EQ filters to the audio signal, wherein the filtered audio signal has a same tonal balance as the audio signal.
A headset comprising:
- a speaker;
- at least one processor;
- and
- memory having stored therein instructions which when executed by the at least one processor causes the headset to:
- receive an audio signal having audio content,
- determine a characteristic of the audio content;
- determine a parameter of the headset;
- produce a filtered audio signal by applying an equalization (EQ) filter to the audio signal based on the characteristic of the audio content and the parameter of the headset;
- and
- drive the speaker using the filtered audio signal to produce sound at a first playback output level, wherein the sound produced at the first playback output level has a same tonal balance as the sound produced at a second playback output level.
Dependencies are inferred from the claim text.