Audio processing method, device and terminal equipment

[0025] figure 1 It is a schematic flowchart of an audio processing method provided in Embodiment 1 of the present invention. The device provided in this embodiment can preferably be executed by a terminal device for outputting audio signals to an audio device, such as a mobile terminal such as a mobile phone. In addition, it can also Performed by audio devices such as headphones, such as figure 1 shown, including:

[0026] Step 101. Compare the sampling rate of the audio signal with a preset sampling rate limit.

[0027] Wherein, the preset sampling rate limit is determined according to the sampling rate that the digital audio equipment can decode. Generally speaking, the sampling rate limit is less than or equal to the sampling rate that the digital audio equipment can decode.

[0028] Specifically, a resampling rate limit is preset, so that the sampling rate of the audio signal to be played is compared with the preset sampling rate limit to determine whether the sampling rate

[0034] figure 2 It is a schematic flowchart of an audio processing method provided in Embodiment 2 of the present invention. The method provided in this embodiment is executed by a mobile terminal, and the mobile terminal has a TYPE-C interface through which the mobile terminal is connected to an earphone. The earphone can Playback based on digital audio signals such as figure 2 As shown, audio processing methods include:

[0035] Step 201, comparing the sampling rate of the audio signal with the preset sampling rate limit, and judging whether the sampling rate of the audio signal is less than the preset sampling rate limit, if not, execute step 202, thereby outputting the audio signal, if so, execute Step 203.

[0036] Step 202, output the audio signal through the TYPE-C interface.

[0037] Step 203, perform frequency doubling processing on the audio signal.

[0038] Specifically, for every two adjacent sampling points in the audio signal, the sampling interval of the two

[0047] Figure 5 It is a schematic structural diagram of an audio processing device provided in Embodiment 3 of the present invention. The device provided in this embodiment can be set in a terminal device for outputting an audio signal to an audio device, such as a mobile terminal such as a mobile phone. In addition, it can also be Set domain headphones and other audio devices, such as Figure 5 As shown, the audio processing device may include: a comparison module 31 and an upscaling module 32 .

[0048] A comparing module 31, configured to compare the sampling rate of the audio signal with a preset sampling rate limit.

[0049] Wherein, the preset sampling rate limit is determined according to the sampling rate that the digital audio equipment can decode. Generally speaking, the sampling rate limit is less than or equal to the sampling rate that the digital audio equipment can decode.

[0050] The frequency up module 32 is used for performing up frequency processing on the a