Mobile communication devices having adaptable features and methods for implementation

1. A speaker system, comprising:

a speaker that serves as a bi-directional transducer; and

circuitry configured to:

determine a displacement of a component of the speaker by sensing changes in a current draw of the speaker,

determine whether the displacement of the component of the speaker is caused by an external cue;

detect an echo as the external cue based on an audio wave of a test signal emitted by the speaker; and

determine, based on the echo, a proximity between the speaker and an object located outside the speaker system,

wherein:

the echo is from the object located outside the speaker system;

the echo is produced based on the audio wave of the test signal emitted by the speaker; and

the speaker system is included in at least one of a headset or a mobile phone.

2. The speaker system of claim 1 , wherein the circuitry is further configured to detect a presence of noise in response to determining that the displacement of the component of the speaker is caused by the external cue, and to implement a noise cancelation strategy to cancel the noise.

3. The speaker system according to claim 1 , wherein the circuitry is configured to detect the proximity between the speaker and the object in response to determining that the displacement of the component of the speaker is caused by the external cue.

4. The speaker system according to claim 1 , wherein the circuitry is further configured to determine if a user is wearing a device that includes the speaker system in response to determining that the displacement of the component of the speaker is caused by the external cue.

5. The speaker system according to claim 1 , wherein the circuitry is further configured to detect distortion in response to determining that the displacement of the component of the speaker is caused by the external cue.

6. The speaker system according to claim 5 , wherein the circuitry is further configured to apply a frequency-dependent filter to an input signal to the speaker in order to reduce the distortion.

7. The speaker system according to claim 6 , wherein the frequency-dependent filter does not affect frequencies of the input signal that do not contribute to the distortion.

8. The speaker system according to claim 1 , wherein the circuitry is configured to:

determine, based on the echo, whether the headset is worn by a user;

automatically determine whether to turn on the headset or maintain the headset in an on state when the headset is worn by the user.

9. The speaker system according to claim 1 , wherein the circuitry is configured to:

determine a type of the object based on characteristics of the echo.

10. The speaker system according to claim 1 , wherein the circuitry is further configured to determine resonant frequencies of the speaker.

11. The speaker system according to claim 10 , wherein the circuitry is further configured to reduce power levels of a subset of frequencies in an input signal to the speaker in order to avoid a resonance event in the speaker.

12. The speaker system according to claim 11 , wherein the subset of frequencies includes the resonant frequencies of the speaker.

13. A method for a speaker system, comprising:

sensing, with circuitry, changes in a current draw of a speaker of the speaker system, the speaker serving as a bi-directional transducer;

determining, with the circuitry, a displacement of a component of the speaker based on the changes in the current draw of the speaker;

determining, with the circuitry, whether the displacement of the component of the speaker is caused by an external cue; and

detecting an echo as the external cue based on an audio wave of a test signal emitted by the speaker,

wherein the method further comprises at least one of:

detecting a presence of noise in response to determining that the displacement of the component of the speaker is caused by the external cue and implementing a noise cancelation strategy to cancel the noise;

detecting a proximity between the speaker and an object in response to determining that the displacement of the component of the speaker is caused by the external cue;

determining if a user is wearing a device that includes the speaker system in response to determining that the displacement of the component of the speaker is caused by the external cue;

detecting distortion in response to determining that the displacement of the component of the speaker is caused by the external cue; or

determining resonant frequencies of the speaker, and

wherein:

the echo is from the object located outside the speaker system; and

the echo is produced based on the audio wave of the test signal emitted by the speaker.

14. The method according to claim 13 , further comprising:

detecting the presence of the noise in response to determining that the displacement of the component of the speaker is caused by the external cue, and implementing the noise cancelation strategy to cancel the noise.

15. The method according to claim 13 , further comprising:

detecting the proximity between the speaker and the object in response to determining that the displacement of the component of the speaker is caused by the external cue.

16. The method according to claim 13 , further comprising:

determining if the user is wearing the device that includes the speaker system in response to determining that the displacement of the component of the speaker is caused by the external cue.

17. The method according to claim 13 , further comprising:

detecting the distortion in response to determining that the displacement of the component of the speaker is caused by the external cue.

18. The method according to claim 13 , further comprising:

determining the resonant frequencies of the speaker.

19. The method according to claim 18 , further comprising:

reducing power levels of a subset of frequencies in an input signal to the speaker in order to avoid a resonance event in the speaker, the subset of frequencies corresponding to the resonant frequencies of the speaker.

20. A non-transitory computer-readable medium encoded with computer-readable instructions that, when executed by processing circuitry, cause the processing circuitry to perform a method comprising:

sensing changes in a current draw of a speaker of a speaker system, the speaker serving as a bi-directional transducer;

determining a displacement of a component of the speaker based on the changes in the current draw of the speaker;

determining whether the displacement of the component of the speaker is caused by an external cue; and

detecting an echo as the external cue based on an audio wave of a test signal emitted by the speaker,

wherein the method further comprises at least one of:

detecting a presence of noise in response to determining that the displacement of the component of the speaker is caused by the external cue and implementing a noise cancelation strategy to cancel the noise;

detecting a proximity between the speaker and an object in response to determining that the displacement of the component of the speaker is caused by the external cue;

determining if a user is wearing a device that includes the speaker system in response to determining that the displacement of the component of the speaker is caused by the external cue;

detecting distortion in response to determining that the displacement of the component of the speaker is caused by the external cue; or

determining resonant frequencies of the speaker, and

wherein:

the echo is from the object located outside the speaker system; and

the echo is produced based on the audio wave of the test signal emitted by the speaker.