Aligning parameter data with audio recordings

1 . A system comprising:

a defibrillator comprising:

a sensor configured to detect values of a physiological parameter of a patient in an environment at discrete times in a time interval;

a speaker configured to output an audible marker into the environment at a particular time among the discrete times;

a first processor configured to generate monitor data comprising:

a parameter channel indicating the values of the physiological parameter at the discrete times; and

a marker channel indicating the audible marker output at the particular time; and

a first transceiver configured to transmit the monitor data; and

a synchronizer comprising:

a second transceiver configured to receive the monitor data from the defibrillator and to receive recorder data from a recording device that is separate from the defibrillator, the recorder data being indicative of an audio recording of the environment during the time interval;

a second processor configured to:

detect the audible marker in the audio recording; and

generate aligned data by aligning the parameter channel and the audio recording based on the audible marker indicated in the marker channel and detected in the audio recording; and

an output device configured to output the aligned data.

2 . The system of claim 1 , wherein the second processor is further configured to:

identify words spoken by a rescuer by performing speech-to-text on an additional sound in the audio recording; and

generate a record associated with the patient based on the words.

3 . The system of claim 1 , wherein the recording device comprises a mobile phone or a wearable device.

4 . A synchronizer, comprising:

a receiver configured to:

receive monitor data from a medical device, the monitor data comprising:

a first channel indicating values of a physiological parameter of a patient detected by the medical device during a time interval; and

a second channel indicating a marker output by the medical device into an environment during the time interval; and

receive recording data from a recording device that is separate from the medical device, the recording data comprising:

a third channel comprising an audio recording of the environment during the time interval;

a processor; and

memory storing instructions that, when executed by the processor, cause the processor to perform operations comprising:

identifying the marker in the third channel comprising the audio recording of the environment; and

based on identifying the marker in the third channel comprising the audio recording of the environment, generating aligned data comprising:

the first channel; and

the third channel time-aligned with the first channel.

5 . The synchronizer of claim 4 , further comprising:

an output device configured to output the aligned data, the output device comprising a screen and a speaker,

wherein the output device is configured to output the aligned data by simultaneously:

displaying, on the screen, an animation of a waveform of the physiological parameter; and

outputting, by the speaker, the audio recording of the environment.

6 . The synchronizer of claim 4 , wherein the operations further comprise:

identifying a voice notation in the audio recording of the environment;

determining, based on the aligned data, a discrete time in the time interval when the voice notation occurred; and

generating a record associated with the patient, the record indicating the voice notation and the discrete time when the voice notation occurred.

7 . The synchronizer of claim 6 , wherein identifying the voice notation comprises determining that a rescuer has administered a treatment to the patient by performing speech-to-text on the audio recording, and

wherein the record further indicates the treatment administered to the patient.

8 . The synchronizer of claim 4 , wherein the marker comprises a power up sound of the medical device, a power off sound of the medical device, an audible instruction output by the medical device, or an alarm output by the medical device.

9 . The synchronizer of claim 4 , wherein the medical device comprises a defibrillator, and

wherein the recording device comprises a mobile device or a wearable device.

10 . The synchronizer of claim 4 , wherein the physiological parameter comprises an electrocardiogram (ECG), an oxygenation of the patient's blood, an amount of carbon dioxide in the patient's breath, a heart rate of the patient, a blood pressure of the patient, a carboxyhemoglobin level of the patient's blood, a temperature of the patient, a respiration rate of the patient, or a pulse rate of the patient.

11 . The synchronizer of claim 4 , wherein the medical device and the recording device have different internal clocks.

12 . The synchronizer of claim 4 , wherein the first channel of the monitor data indicates the values of the physiological parameter at a first sampling rate,

wherein the third channel of the recording data indicates the audio recording of the environment at a second sampling rate, and

wherein the first sampling rate is different than the second sampling rate.

13 . The synchronizer of claim 4 , wherein the monitor data further comprises a fourth channel comprising first timestamps,

wherein the recording data further comprises a fifth channel comprising second timestamps, and

wherein the first timestamps are different than the second timestamps.

14 . A method, comprising:

receiving, from a first device, a first file comprising:

a first channel comprising first measurements of a first parameter at first discrete times in a time interval; and

a second channel comprising an indication of a marker output by the first device during the time interval;

receiving, from a second device that is separate from the first device, a second file comprising a third channel that comprises second measurements of a second parameter at second discrete times in the time interval;

detecting, by analyzing the third channel, the marker output by the first device in the second measurements of the second parameter;

based on detecting the marker output by the first device in the second measurements, generating aligned data comprising the first channel time-aligned with the third channel; and

outputting the aligned data.

15 . The method of claim 14 , wherein the first device comprises a defibrillator and the second device comprises a mobile device or a wearable device.

16 . The method of claim 14 , wherein the first parameter comprises an electrocardiogram (ECG) of a patient, an oxygenation of the patient's blood, an amount of carbon dioxide in the patient's breath, a heart rate of the patient, a blood pressure of the patient, a carboxyhemoglobin level of the patient's blood, a temperature of the patient, a respiration rate of the patient, or a pulse rate of the patient, and

wherein the second parameter comprises sound, the second measurements comprising an audio recording.

17 . The method of claim 16 , wherein the marker comprises a power up sound of the first device, a power off sound of the first device, an audible instruction output by the first device, or an alarm output by the first device.

18 . The method of claim 14 , wherein outputting the aligned data comprises simultaneously:

displaying, on a screen, an animation of a waveform of the first parameter; and

outputting, by a speaker, an audio recording indicating the second measurements of the second parameter.

19 . The method of claim 16 , further comprising:

identifying words by performing speech-to-text on the audio recording;

generating a record comprising the words and the first measurements of the first parameter; and

transmitting the record to an external computing device.

20 . The method of claim 19 , further comprising:

determining that a treatment has been administered to a patient based on the words,

wherein the record indicates the treatment administered to the patient.