20240048903. ON-DEVICE LOUDSPEAKER REFERENCE RESISTANCE DETERMINATION simplified abstract (Cirrus Logic International Semiconductor Ltd)

ON-DEVICE LOUDSPEAKER REFERENCE RESISTANCE DETERMINATION

Organization Name

Cirrus Logic International Semiconductor Ltd

Inventor(s)

Sandeep P. Sira of Gilbert AZ (US)

Philip B. J. Clarkin of Austin TX (US)

Roberto Napoli of Milan (IT)

ON-DEVICE LOUDSPEAKER REFERENCE RESISTANCE DETERMINATION - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240048903 titled 'ON-DEVICE LOUDSPEAKER REFERENCE RESISTANCE DETERMINATION

Simplified Explanation

The disclosed patent application describes techniques for determining the reference resistance of a loudspeaker in a mobile device. This reference resistance value can be used for various applications, including speaker protection and improving loudspeaker performance.

• Method of audio device monitoring:

 * Apply a first signal to a loudspeaker.
 * Measure the voltage and current of the loudspeaker while the first signal is applied.
 * Determine the reference resistance for the loudspeaker based on the measured voltage and current.

Potential applications of this technology:

• Speaker protection: By determining the reference resistance, the overdrive of the loudspeaker can be reduced beyond safe temperature limits, preventing damage to the loudspeaker.
• Improved loudspeaker performance: The reference resistance allows for driving the loudspeaker closer to safety limits, enhancing its performance.

Problems solved by this technology:

• Preventing loudspeaker damage: By reducing overdrive beyond safe temperature limits, the technology protects the loudspeaker from potential damage.
• Enhancing loudspeaker performance: Driving the loudspeaker closer to safety limits improves its performance, resulting in better audio quality.

Benefits of this technology:

• Increased loudspeaker lifespan: By protecting the loudspeaker from overdrive, its lifespan is extended.
• Improved audio quality: Driving the loudspeaker closer to safety limits enhances its performance, resulting in better audio quality for the user.

Original Abstract Submitted

this disclosure provides techniques for determining a reference resistance of a loudspeaker, such as in a mobile device. the reference resistance value may be used, among other applications, for speaker protection by reducing overdrive of the loudspeaker beyond safe temperature, which could damage the loudspeaker, while allowing driving of the loudspeaker closer to safety limits to improve performance of the loudspeaker. in a first aspect, a method of audio device monitoring includes applying a first signal to a loudspeaker; measuring a voltage and a current for the loudspeaker while applying the first signal to the loudspeaker; and determining a reference resistance for the loudspeaker based on the voltage and the current. other aspects and features are also claimed and described.