公开(公告)号：US09941977B2

公开(公告)日：2018-04-10

申请号：US14588882

申请日：2015-01-02

Applicant: Google Inc.

Inventor： Pascal Tom Getreuer ,  Murphy Martin Stein ,  Ryan Michael Rifkin ,  Richard Francis Lyon ,  Ian Rickard Muldoon

IPC: H04B11/00

CPC classification number: H04B11/00

Abstract: Implementations generally relate to providing data transmission between devices over audible sound. In some implementations, a method includes mapping each symbol of data to a frequency combination, where each frequency combination includes one or more frequencies. The method further includes generating a sine wave for each frequency. The method further includes adding sine waves for a given symbol to obtain a resulting sine wave. The method further includes applying a window function to the resulting sine wave to obtain a data signal.