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

Claim 19:
20. An apparatus for communicating data acoustically, comprising:
a memory;
a speaker; and
a processing system coupled to the memory and the speaker and configured to control the apparatus to:
segment a stream of bytes into a sequence of symbols, each symbol comprising B number of bits;
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 mapped to a respective symbol includes a same number of tones and each tone in the set of tones mapped to the respective symbol has a different frequency defined by the mapping; and
sequentially for each symbol of the sequence of symbols, acoustically output, using the speaker, the set of tones determined for the respective symbol, wherein each of the tones of the set of tones for the respective symbol are simultaneously acoustically output by the speaker

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