Abstract: The present invention discloses a signal processing device, a signal processing method and a speaker. The signal processing device comprises a multi-band dynamic range controller, wherein the multi-band dynamic range controller receives an audio signal and includes a first band splitting unit and a resonant band adjustment unit; the first band splitting unit is configured to split the audio signal into multiple bands and obtain at least one resonant band therefrom, which has a resonant frequency band signal in a resonant frequency range of the audio signal; and the resonant band adjustment unit is configured to adjust the resonant frequency band signal based at least on a resonant band dynamic range control gain and output an adjusted resonant frequency band signal for combination with other band signals into a compression output signal.

Abstract: The present invention discloses an earphone. The earphone comprises: an earbud, wherein a cable comes out from an open end of a stem of the earbud; and a strain relief element mounted at the open end, the material of which is softer than that of the stem. The strain relief element contains a cable tube where the cable passes through and the inner wall of the cable tube fits the cable in a close manner. According to an embodiment of this invention, the present invention can provide a better strain relief effect.

Abstract: The present invention discloses a signal processing device, a signal processing method and a speaker. The signal processing device comprises a multi-band dynamic range controller, wherein the multi-band dynamic range controller receives an audio signal and includes a first band splitting unit and a resonant band adjustment unit; the first band splitting unit is configured to split the audio signal into multiple bands and obtain at least one resonant band therefrom, which has a resonant frequency band signal in a resonant frequency range of the audio signal; and the resonant band adjustment unit is configured to adjust the resonant frequency band signal based at least on a resonant band dynamic range control gain and output an adjusted resonant frequency band signal for combination with other band signals into a compression output signal.

Abstract: The present invention discloses an earphone. The earphone comprises: an earbud, wherein a cable comes out from an open end of a stem of the earbud; and a strain relief element mounted at the open end, the material of which is softer than that of the stem. The strain relief element contains a cable tube where the cable passes through and the inner wall of the cable tube fits the cable in a close manner. According to an embodiment of this invention, the present invention can provide a better strain relief effect.