Sound pressure level limiting
AssigneeImation Corp.
InventorsEran Schul, Douglas K. Hogue, Alan Olson, John Bruss
Life of this patent
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Abstract
Limiting the sound pressure level presented to the listener's ears by one or more headphones, using processing capabilities of a personal media device. Headphones, coupled to audio signals from a personal media device, include a sensor to measure the sound pressure level presented to the listener's ears, and provide that measure to the personal media device. The personal media device, optionally aided by one or more analog circuits, adjusts the audio signal so that the sound pressure level is maintained within a recommended range.
Claims20
A method, including
- measuring a sound pressure level next to a listener's ear;
- comparing said sound pressure level with a pre-selected value;
- and
- adjusting an audio signal emitted into said listener's ear, in response to a result of said comparing.
Apparatus including
- a personal media device including a processor, non-transitory memory, and an audio signal generator;
- said non-transitory memory including instructions interpretable by said processor as an application program disposed to
- receive an output from said audio signal generator,
- receive a measure of a sound pressure level next to a listener's ear, and
- adjust an audio signal emitted into said listener's ear, by altering said output and maintaining said sound pressure level at a value less than a pre-selected value.
A non-transitory medium maintaining computer-readable instructions, said instructions directing a processor to
- measure a sound pressure level next to a listener's ear;
- compare said sound pressure level with a pre-selected value;
- and
- adjust an audio signal emitted into said listener's ear, in response to a result of said comparing.
Dependencies are inferred from the claim text.