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US 10,441,806 B2Granted
Variable sound system for audio devices
AssigneePhysio-Control, Inc.
InventorRobert Eugene Smith
Life of this patent
Estimating the term…
Abstract
A system capable of self-adjusting both sound level and spectral content to improve audibility and intelligibility of medical device audible cues. Audible cues are stored as sound files. Ambient noise is detected, and the output of the audible cues is altered based on the ambient noise. Various embodiments include processed sound files that are more robust in noisy environments.
Claims12
A medical device configured to one or both of treat and monitor a patient, comprising:
- a sound level calculation component configured to determine a sound level of an ambient environment of the medical device;
- a sound spectrum analysis component configured to determine a sound spectrum of the ambient environment of the medical device;
- an amplifier having an adjustable gain;
- and
- a processor configured to:
- receive the sound level of the ambient environment of the medical device from the sound level calculation component;
- determine the adjustable gain for the amplifier based, at least in part, on the sound level of the ambient environment;
- receive the sound spectrum of the ambient environment of the medical device from the sound spectrum analysis component;
- determine a spectrum enhancement composition based, at least in part, on the sound spectrum of the ambient environment, the spectrum enhancement composition including identifying one or more frequencies masked by the ambient environment;
- cause audio output from the medical device into the ambient environment to be output with the applied adjustable gain and with the spectrum enhancement composition.
7 more elements
A monitor-defibrillator configured to one or both of monitor and treat a patient, comprising:
- a microphone configured to receive audio in an ambient environment of the monitor-defibrillator;
- a sound level calculation component configured to determine a sound level of the ambient environment of the monitor-defibrillator based on the received audio in the ambient environment;
- a sound spectrum analysis component configured to determine a sound spectrum of the received audio in the ambient environment of the medical device;
- an amplifier having an adjustable gain;
- a sound library having multiple audible cues, the audible cues including user instructions to operate the monitor-defibrillator;
- and
- a processor configured to:
- receive the sound level of the ambient environment of the monitor-defibrillator from the sound level calculation component;
- determine a value of an ambient gain for the amplifier based, at least in part, on the ambient sound;
- cause the amplifier to adjust the adjustable gain to the ambient gain value;
- receive the sound spectrum of the ambient environment of the monitor-defibrillator from the sound spectrum analysis component;
- select one of the multiple audible cues from the sound library based, at least in part, on the sound spectrum;
- and
- cause the selected audible cue to be output with the ambient gain value.
11 more elements
A method of operating a monitor-defibrillator, comprising:
- determining an ambient sound level of an ambient environment of the monitor-defibrillator;
- determining an ambient sound spectrum of the ambient environment of the monitor-defibrillator;
- determining an adjustable gain for an amplifier configured to cause audio to be output from the medical device;
- determining a spectrum enhancement composition based, at least in part, on the sound spectrum of the ambient environment, the spectrum enhancement composition including one or more frequencies not masked by the ambient environment;
- causing audio to be output from the monitor-defibrillator into the ambient environment with the adjustable gain and with the spectrum enhancement composition.
2 more elements
Dependencies are inferred from the claim text.