Patent ID: 11870501
Assignee: SONOS EXPERIENCE LIMITED
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A system for communicating data acoustically, comprising:
an encoding device, comprising:
one or more first processors; and
a first non-transitory computer-readable medium storing instructions that, when executed by the one or more first processors, cause the encoding device to:
segment the data into a sequence of symbols, each of the symbols having a preset number of bits; and
determine for each symbol of the sequence of symbols a plurality of tones based on a bijective mapping between symbols and sets of tones selected from tones spread evenly over a frequency spectrum, wherein each set of tones among the sets of tones includes a same number of tones and each of the plurality of tones for each symbol in the sequence of symbols is at a different frequency; and

a playback device, comprising:
one or more second processors;
a speaker; and
a second non-transitory computer-readable medium storing instructions that, when executed by the one or more second processors, cause the playback device to:
for each symbol in the sequence of the symbols, cause, via the speaker, simultaneous playback of the plurality of tones determined for the respective symbol

wherein the bijective mapping includes a mapping between the symbols and a multi-tone Frequency Shift Keying signal including the plurality of tones.