发明名称 |
DISTORTION SUPPRESSION IN HIGH-LEVEL CAPABLE AUDIO AMPLIFICATION CIRCUIT |
摘要 |
The present invention relates to an audio amplification circuit comprising a first preamplifier for receipt of an audio input signal and a second preamplifier comprising a first differential input for receipt of an attenuated audio input signal. The attenuated audio input signal is generated by an attenuator coupled to the audio input signal. A non-linear element is coupled to a first input of the first preamplifier thereby distorting the audio input signal at the first input at large signal levels. A distortion compensation network is adapted to supply a distortion compensation signal from the first input of the first preamplifier to a second differential input of the second preamplifier such that distortion in the output signal of the second preamplifier is cancelled or attenuated. The invention further relates to a corresponding method of compensating an audio amplification circuit for distortion induced by a non-linear element.
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申请公布号 |
US2012121106(A1) |
申请公布日期 |
2012.05.17 |
申请号 |
US201113302288 |
申请日期 |
2011.11.22 |
申请人 |
HENRIKSEN JENS JORGEN GAARDE;ANALOG DEVICES, INC. |
发明人 |
HENRIKSEN JENS JORGEN GAARDE |
分类号 |
H04B15/00 |
主分类号 |
H04B15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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