Portable appliance, power saving method and sound volume compensating method, and storage medium

摘要: There are provided a mobile device that is equipped with musical composition-reproducing section and capable of curtailing the battery drain as much possible, prevents quality reproduced tones from being degraded even if voltage level lowers. A detector monitors an battery. The controlled such number parts composition by reduced when monitored becomes lower than reference value. In other forms invention, value, first predetermined data assigned to intrinsic ones larger second correspond said composition, well ones, for reproduction or gain variable-gain amplifier increased compensate lowering volume parts.