Methods and systems for encoding and decoding audio signals

1. A method comprising:

encoding a first portion of an audio signal with a first dual-tone multi-frequency (DTMF) tone;

encoding a second portion of the audio signal with a second DTMF tone at a time delay from the first DTMF tone, the second DTMF tone being different than the first DTMF tone; and the method further comprising:

receiving a two-tone encoding selection associated with an action on an electronic figurine, the two-tone encoding selection including the first DTMF tone and the second DTMF tone,

wherein encoding the first portion and the second portion is in response to receiving the two-tone encoding selection.

2. The method of claim 1 , further comprising:

receiving a requested action for an electronic figurine; and

identifying the first DTMF tone and the second DTMF tone based on the requested action,

wherein the encoding of the first portion and the second portion is based on the identifying.

3. The method of claim 2 , wherein the requested action includes an audio reproduction request for the electronic figurine.

4. The method of claim 2 , wherein the requested action includes a motion request, a light request, or combinations thereof for the electronic figurine.

5. The method of claim 1 , further comprising:

applying a fade effect to the first DTMF tone and the second DTMF tone to create a first faded DTMF tone and a faded second DTMF tone,

wherein the first portion of the audio signal is encoded with the first faded DTMF tone and the second portion of the audio signal is encoded with the faded second DTMF tone at the time delay.

6. The method of claim 5 , wherein the fade effect includes a fade in and a fade out.

7. The method of claim 1 , further comprising:

applying an envelope effect to the first DTMF tone and the second DTMF tone to create an enveloped first DTMF tone and an enveloped second DTMF tone,

wherein the first portion of the audio signal is encoded with the enveloped first DTMF tone and the second portion of the audio signal is encoded with the enveloped second DTMF tone at the time delay.

8. The method of claim 1 , further comprising:

encoding the audio signal with a third DTMF tone at the time delay from the second DTMF tone, the third DTMF tone being different than the second DTMF tone.

9. The method of claim 1 , further comprising:

selecting a portion of the audio signal for encoding the second DTMF tone based on underlying audio of the audio signal,

wherein encoding of the second DTMF tone is based on selection of the portion.

10. The method of claim 1 , wherein the time delay is less than a quarter of a second.

11. The method of claim 1 , wherein a time duration of the first portion and the second portion are approximately equal.

12. A method comprising:

identifying and decoding a first DTMF tone in an audio signal;

identifying and decoding a second DTMF tone in the audio signal at a time delay from the first DTMF tone; and

determining an action for an electronic figurine associated with the first DTMF tone and the second DTMF tone,

wherein the second DTMF tone is different than the first DTMF tone;

wherein identifying and decoding the second DTMF comprises:

determining whether an additional DTMF tone is present in the audio signal at the time delay from the first DTMF tone; and

decoding the additional DTMF tone as the second DTMF tone.

13. The method of claim 12 , wherein determining the action comprises:

comparing the first DTMF tone and the second DTMF tone to a plurality of paired tone entries of a lookup table; and

identifying the action for the electronic figurine based on comparing.

14. The method of claim 12 , wherein the time delay is less than a quarter of a second.

15. The method of claim 12 , wherein a time duration of the first portion and the second portion are approximately equal.

16. The method of claim 12 , wherein there is no DTMF tone in the audio signal after the first DTMF tone during the time delay.

17. A non-transitory machine-readable medium comprising computer-executable instructions, which when executed by one or more processors, cause the one or more processors to perform the following operations:

identify and decode a first DTMF tone in an audio signal;

identify and decode a second DTMF tone in the audio signal at a time delay from the first DTMF tone; and

determine a requested action for an electronic figurine associated with the first DTMF tone and the second DTMF tone,

wherein the second DTMF tone is different than the first DTMF tone;

wherein identifying and decoding the second DTMF comprises:

determining whether an additional DTMF tone is present in the audio signal at the time delay from the first DTMF tone; and

decoding the additional DTMF tone as the second DTMF tone.