RELATED APPLICATIONS

This application claims priority to Taiwan Application Serial Number 108116966, filed May 16, 2019, which is herein incorporated by reference.

BACKGROUND

Field of Disclosure

The present disclosure relates to an audio playback technology. More particularly, the present disclosure relates to an audio playback device and an audio playback method.

Description of Related Art

In recent years, users of electronic products pursue better quality of music playing such that the specification of the components for playing music is required to have a higher standard. In current music playing technology, signal processing is first performed on a digital audio signal, e.g. digital to analog conversion, for it to be in an analog form that can be playback by an earphone or an amplifier. However, during such signal processing, noise generated by the circuit in performing the signal processing is transmitted, along with the audio signal, to the earphone or the amplifier, affecting the quality of playback.

Accordingly, what is needed is an audio playback device and an audio playback method to address the above issues.

SUMMARY

An aspect of the present disclosure is to provide an audio playback device that includes a plurality of signal processing paths, an adding circuit and an amplifier circuit. The signal processing paths are coupled in parallel, wherein the number of the signal processing paths is N and each of the signal processing paths is configured to receive a same input signal to generate an output analog signal after a signal processing is performed, wherein each of the signal processing paths at least comprises a digital to analog converting (DAC) circuit and the signal processing at least includes a digital to analog conversion performed by the DAC circuit. The adding circuit is configured to add the output analog signal generated from each of the signal processing paths to generate a total output analog signal. The amplifier circuit is configured to receive the total output analog signal to adjust a signal intensity of the total output analog signal according to a gain to generate an output audio signal, wherein the gain is 1/N.

Another aspect of the present disclosure is to provide an audio playback method that includes the steps outlined below. A same input signal is received by each of a plurality of signal processing paths coupled in parallel to generate an output analog signal after a signal processing is performed, wherein the number of the signal processing paths is N and each of the signal processing paths at least comprises a digital to analog converting (DAC) circuit and the signal processing at least comprises a digital to analog conversion performed by the DAC circuit. The output analog signal generated from each of the signal processing paths is added by an adding circuit to generate a total output analog signal. The total output analog signal is received by an amplifier circuit to adjust a signal intensity of the total output analog signal according to a gain to generate an output audio signal, wherein the gain is 1/N.

These and other features, aspects, and advantages of the present disclosure will become better understood with reference to the following description and appended claims.

It is to be understood that both the foregoing general description and the following detailed description are by examples, and are intended to provide further explanation of the disclosure as claimed.

