Abstract: Disclosed in the present application is a display device, comprising a display body and an electromagnetic vibration apparatus; the display body comprises a housing, a display screen mounted at a front end of the housing, and an optical module mounted within the housing, the housing comprising a back plate; the electromagnetic vibration apparatus is mounted on the back plate and emits sound by means of vibrating the back plate, the optical module, and the display screen.

Abstract: Disclosed in the present application is a display device, comprising a display body and an electromagnetic vibration apparatus; the display body comprises a housing, a display screen mounted at a front end of the housing, and an optical module mounted within the housing, the housing comprising a back plate; the electromagnetic vibration apparatus is mounted on the back plate and emits sound by means of vibrating the back plate, the optical module, and the display screen.

Abstract: Provided is a method for eliminating an echo. The method includes: obtaining a mixed signal of a mixture of a user's voice given out from the user and the echo given out from a loudspeaker, and obtaining a sound signal given out from the loudspeaker based on the volume of the sound given out from the loudspeaker, the sound signal being used as a reference signal; obtaining a gain coefficient of the reference signal based on comparing the mixed signal with the reference signal, and obtaining a gain signal of the reference signal through the gain coefficient; obtaining a compensation signal of the reference signal based on the gain signal and a corresponding preset compensation coefficient; inverting the compensation signal; and combining the inverted compensation signal with the mixed signal, so as to eliminate the echo given out from the loudspeaker. A system for eliminating the echo is also provided.

Abstract: The present disclosure provides a method for compensating frequency response of audio signal, the method includes: presetting n groups of audio signals with different frequencies, acquiring the minimum signal amplitude value heard by user in each group of audio signals; calculating by a preset gain algorithm to acquire corresponding compensation gain, according to the minimum signal amplitude value; for each group of audio signals, calculating by a preset filtering coefficient algorithm to acquire a corresponding filtering coefficient, according to the frequency of the audio signal, the compensation gain and a preset quality factor; generating a frequency response compensation curve of audio signal according to the filtering coefficient corresponding to the n groups of audio signals; and adjusting an acoustic frequency response of the audio signal according to the compensation curve, and outputting the adjusted audio signal.

Abstract: The present disclosure provides a method for compensating frequency response of audio signal, the method includes: presetting n groups of audio signals with different frequencies, acquiring the minimum signal amplitude value heard by user in each group of audio signals; calculating by a preset gain algorithm to acquire corresponding compensation gain, according to the minimum signal amplitude value; for each group of audio signals, calculating by a preset filtering coefficient algorithm to acquire a corresponding filtering coefficient, according to the frequency of the audio signal, the compensation gain and a preset quality factor; generating a frequency response compensation curve of audio signal according to the filtering coefficient corresponding to the n groups of audio signals; and adjusting an acoustic frequency response of the audio signal according to the compensation curve, and outputting the adjusted audio signal.

Abstract: Provided is a method for eliminating an echo. The method includes: obtaining a mixed signal of a mixture of a user's voice given out from the user and the echo given out from a loudspeaker, and obtaining a sound signal given out from the loudspeaker based on the volume of the sound given out from the loudspeaker, the sound signal being used as a reference signal; obtaining a gain coefficient of the reference signal based on comparing the mixed signal with the reference signal, and obtaining a gain signal of the reference signal through the gain coefficient; obtaining a compensation signal of the reference signal based on the gain signal and a corresponding preset compensation coefficient; inverting the compensation signal; and combining the inverted compensation signal with the mixed signal, so as to eliminate the echo given out from the loudspeaker. A system for eliminating the echo is also provided.