Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Audio signal processing apparatus and audio signal processing method
An audio signal processing apparatus and method in which power supplied to a power amplifier is controlled in a wide range from a small output power level to a large output power level in accordance with input audio signals. The apparatus includes an interface unit configured to convert input audio signals to digital audio signals, a digital signal processor configured to process the digital audio signals converted by the interface unit, a volume unit configured to adjust a volume of the digital audio signal processed by the digital signal processor and generate at least one volume modulated signal, and an amplifier configured to amplify the at least one volume modulated signal, wherein power supplied to the amplifier is based on a level of the digital audio signal converted by the interface unit and the at least one volume modulated signal from the volume unit.
Kabushiki Kaisha Toshiba
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inventional inventional additional inventional
Yasuyuki Masaru
Suzuki Ebi