Patent ID: 11910171
Assignee: APPLE INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A smart speaker comprising:
circuitry that decodes an encoded audio file to produce an audio bitstream and converts the audio bitstream to an analog audio signal;
at least one audio amplifier that amplifies the analog audio signal;
an audio power supply that receives an input voltage and provides an output voltage that powers the at least one audio amplifier; and
an audio power supply controller comprising circuitry that:
identifies at least one of an increased energy requirement or a decreased energy requirement in an upcoming portion of the audio signal;
responsive to identifying an increased energy requirement in an upcoming portion of the audio signal, increases a power supply voltage supplied to the at least one audio amplifier and increases a look ahead time period before the increased energy requirement at which the audio power supply controller identifies the increased energy requirement; or
responsive to a identifying a decreased energy requirement in an upcoming portion of the audio signal, deceases the power supply voltage supplied to the at least one audio amplifier and decreases a delay time period after the decreased energy requirement at which the audio power supply controller decreases the power supply voltage supplied to the at least one audio amplifier.