Signal generation duties could easily be handled by a 555 circuit at the low end, and a computer sound card at the higher end. [brmarcum] obviously put some time into his tutorial, but it’s not ...

Figure 1 Slope detection method where a bandpass slope below the resonant peak is used to create a slope-induced amplitude modulation where a simple envelope detector can be used to recover the ...

AM radios were easy to understand. The strength of the signal goes up and down, and the audio follows. FM radio is a little more difficult. [AllAmericanFiveRadio] has an old tube FM set and takes u… ...

Abstract: The reversal of the current directions in audio circuit elements causes polarity inversion of the acquired audio signal with respect to the reference input signal. The objective of the work ...

The reversal of the current directions in audio circuit elements causes polarity inversion of the acquired audio signal with respect to the reference input signal. The objective of the work presented ...