Abstract: A signal processing device includes an amplifier, a filter module, a demodulation module and a band control module. When the band control module controls the filter module to output a specific single-channel signal, the resonator of the demodulator is switched to resonate the selected single-channel signal. Then the selected single-channel signal is demodulated. A signal processing method and an infrared multi-channel receiver are also described herein.
Abstract: A signal processing device includes an amplifier, a filter module, a demodulation module and a band control module. When the band control module controls the filter module to output a specific single-channel signal, the resonator of the demodulator is switched to resonate the selected single-channel signal. Then the selected single-channel signal is demodulated. A signal processing method and an infrared multi-channel receiver are also described herein.