System and method of reducing power consumption for audio playback

A system and method of improving the efficiency in the power consumption of an audio system. In essence, the technique is to adjust the power delivered from the power supply to the analog section, such as the power amplifier, in response to the volume level indicated by the volume control module and...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Kulkarni Prajakt V, Fitzgerald Joseph R, Hinrichs Jeffrey, Miao Guoqing, McAllister Gene H, Bazarjani Seyfollah, van der Wagt Jan Paul, Gagne Justin Joseph Rosen
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS AMPLIFIERS BASIC ELECTRONIC CIRCUITRY CONTROL OF AMPLIFICATION ELECTRICITY MUSICAL INSTRUMENTS PHYSICS SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION
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Beschreibung
Zusammenfassung:	A system and method of improving the efficiency in the power consumption of an audio system. In essence, the technique is to adjust the power delivered from the power supply to the analog section, such as the power amplifier, in response to the volume level indicated by the volume control module and/or in response to the detected characteristic of the input audio signal. Thus, in this manner, the analog section is operated in a manner that is related to the level of the signal it is processing. Additionally, the system and method also relate to a technique of adjusting the dynamic ranges of the digital signal and the analog signal to improve the overall dynamic range of the system without needing to consume additional power.