Chung-Lun LiFollow


Portable devices such as mobile phones, tablets, rechargeable smart speakers, etc. that are capable of audio playback via device speakers rely on the device battery as a power source. However, to deliver high quality audio playback is a power hungry activity, and places substantial demands on the device battery. Traditional approaches to conserve power such as amplifier gain/volume attenuation, use of equalizer filters, boost current limiter, etc. can lead to lower audio quality and consequently, a subpar user experience. This disclosure describes a mechanism to control and optimize power consumption for audio playback in a battery-powered device with minimal impact on the audio performance or listening experience. The mechanism is predictive (uses a look-ahead mechanism) and smart (intervenes only when an over-current situation is likely). The mechanism uses power and speaker modeling along with acoustic modifications to optimize power consumption. The described mechanism is compatible with other audio enhancement solutions.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.