| 摘要 |
A device for carrying out a pre-correction of audio signals before they are amplified in amplification systems of transmitters with amplitude modulation, the amplification systems each having a determined number of modules generating pulses of modulated width. This device includes: an analog-digital converter for converting the audio signal to be transmitted into digital samples; an interpolation circuit coupled to the output of the analog-digital converter to carry out the computation, by a linear interpolation, of the slope of variation and the computation, by a parabolic interpolation, of the value of the audio signal applied to the input of the analog-digital converter; and memory means coupled to the output of the interpolation circuit storing pre-correction values of the samples of the audio signal addressable by means of the interpolation values of the audio signal computed by the interpolation circuit.
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