Audio signal amplifier apparatus, and method of correcting distortion in an audio signal amplifier apparatus

摘要

"Appliance amplifier of audio signal, and method of correcting distortion in an amplifier apparatus of audio signal.As an implementation of this invention, an audio signal is amplified by a power amplifier and an amplified audio signal is generated.A resistance detection current and a differential amplifier provided between the power amplifier and a speaker.When the audio signal amplified is supplied to the speaker as an output audio signal.The waveforms of current of the audio signal amplified in a distortion component was superimposed by the effect of the speaker and the audio signal output are detected as a sign ofDetection of current. A signal component of the distortion is calculated based on the difference between the current detection signal and the audio signal.And a result added by the signal component of the distortion was added to the audio signal by an adder component of distortion is supplied to the power amplifier.