An echo canceler device comprises: a band adjustment unit 102 that has a filter for giving a gain to that one of input signals which is of a particular frequency band, thereby performing a band adjustment; an adaptive filter 101 that receives a telephone reception signal, updates a filter coefficient and uses the updated filter coefficient to generate a pseudo echo signal; a band modification unit 104 that has a filter for changing the frequency characteristic of a signal, which has been obtained by subtracting, from an input signal having been subjected to the band adjustment, the pseudo echo signal generated by the adaptive filter 101, to the frequency characteristic of the input signal that has not yet been subjected to the band adjustment by the band adjustment unit 102; and a residual echo suppression unit 105 that suppresses, by a suppression amount established on the basis of filter information of the band adjustment unit 102, the echo component remaining in the signal the frequency characteristic of which has been changed. The residual echo suppression unit 105 establishes a suppression amount for the signal of the particular frequency band having been subjected to the band adjustment such that the suppression amount is smaller than a suppression amount established for the signals of the other frequency bands.