Patent Document ID: 9668041
Application ID: 13999759
Patent Flag: 1

Claim One:
1. An apparatus for enhancing the experience of a swimmer in the water comprising: a sensor; said sensor for providing an output; and an audio headset for a swimmer in the water; said audio headset for a swimmer in the water for receiving a stream of content; said audio headset for a swimmer in the water also for receiving said output from said sensor; said audio headset also including automatic gain control; said audio headset for a swimmer in the water including a computing device; said computing device including a processor and a non-volatile memory; said computing device also for converting said output from said sensor to audio information; said audio headset for a swimmer in the water, being worn by said swimmer, for providing a combination of said stream of content and audio information to said swimmer; a system communication module; said system communication module for sending signals with said audio headset; said system communication module also for sending interrupt audio messages to a swimmer in the water; said system communication module also for delivering multiple audio streams to said audio headset; said system communication module also for tracking stroke and body orientation changes of a swimmer in the water; said system communication module also for logging output from said sensor for evaluation in real time by a coach; said plurality of signals including a plurality of content channels in a frequency band that generally spans 100 to 250 KHz; said system communication module also for combining a plurality of ultrasonic communication links used generally simultaneously in the same swimming pool by a plurality of coaches; said system communication module also for enabling a coach to provide voice commands using a first content channel; said voice commands being conveyed through a first amplifier and a first low pass filter; said voice commands being modulated at a specific frequency using a modulator to produce a first unspread audio channel; said system communication module for producing a second content channel that is conveyed through a second amplifier a second low pass filter; said second content stream being modulated at a specific frequency using a modulator to produce a second unspread audio channel; said system communication module also for summing said plurality of content channels to produce a combined signal; said plurality of content channels being summed by a signal adder, and then added to a pilot frequency; said system communication module also for multiplying said combined signal by a pseudorandom number code, which produces spread spectrum signal; said system communication module also for adding an unspread pilot frequency signal to said combined signal to ease the process of signal tracking at said audio headset; said system communication module also for increasing the level of the combined signal using a third amplifier to produce a transmission signal before being transmitted to said headset via an omnidirectional hydrophone; said audio headset for receiving said transmission signal; said audio headset also for splitting said transmission signal into a plurality of channels that may be used by said swimmer; said sensor including a magnetometer for lap counting; said sensor further including a plurality of magnetic sensors arranged in a mutually orthogonal configuration; a plurality of acceleration sensors in a mutually orthogonal configuration; said plurality of magnetic sensors and said plurality of acceleration sensors being used to count laps and to determine speed; said audio headset for receiving ultrasonic signals through water; said ultrasonic signal being propagated as a composite signal multiplied by a PN code to form a spread spectrum signal which mitigates multipath distortion; said ultrasonic signal including a pilot signal; said pilot signal being used to facilitate code and carrier acquisition in said headset to compensate for Doppler shift due to the motion of said swimmer; said ultrasonic signal being transmitted by said omnidirectional hydrophone with a wide radiation pattern to cover the pool underwater as uniformly as possible; a web portal: said system communication module also for distributing workouts through said web portal; said web portal for providing a connection to performance data for workouts and swim meet results.