AUDIO SAMPLE RATE CONTROL METHOD APPLIED TO AUDIO FRONT-END AND RELATED NON-TRANSITORY MACHINE READABLE MEDIUM

• US 20160300583A1
• Filed: 10/29/2015
• Published: 10/13/2016
• Est. Priority Date: 10/29/2014
• Status: Abandoned Application

• Current Assignee: MediaTek, Inc.
• Original Assignee: MediaTek, Inc.
• Inventors: Chang, Chi-Peng, Cheng, Hsin-Ping, Hsu, Pei-Lin
• Application Number:
  US15/037,328
• Publication Number:
  US 20160300583A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/162 Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
• CPC Class Codes: G10L 21/01 Correction of time axis
• CPC Class Codes: G11B 20/10009 Improvement or modification of read or write signals
• CPC Class Codes: G11B 20/10037 A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters thereof
• CPC Class Codes: H04R 3/00 Circuits for transducers , loudspeakers or microphones

Abstract

An audio sample rate control method includes at least the following steps: when an audio source is required to undergo audio playback via an audio front-end (AFE), checking a sample rate control criterion; and performing sample rate control upon the AFE according to a checking result of the sample rate control criterion.

Claims

1. An audio sample rate control method comprising:

when an audio source is required to undergo audio playback via an audio front-end (AFE), checking a sample rate control criterion; and

performing sample rate control upon the AFE according to a checking result of the sample rate control criterion.

2. The audio sample rate control method of claim 1, wherein checking the sample rate control criterion comprises:

obtaining the checking result according to an operating status of the AFE.

3. The audio sample rate control method of claim 2, wherein performing the sample rate control upon the AFE comprises:

when the AFE is not working, setting a sample rate of the AFE by a sample rate of the audio source.

4. The audio sample rate control method of claim 2, wherein performing the sample rate control upon the AFE comprises:

when the AFE is working, keeping a current setting of a sample rate of the AFE unchanged.

5. The audio sample rate control method of claim 1, wherein checking the sample rate control criterion comprises:

obtaining the checking result according to an audio source type of the audio source.

6. The audio sample rate control method of claim 5, wherein performing the sample rate control upon the AFE comprises:

when the audio source is an audio source with a specific audio source type, setting a sample rate of the AFE by a sample rate of the audio source.

7. The audio sample rate control method of claim 6, wherein the audio source with the specific audio source type is a radio broadcasting input or an audio input having a designated sample rate.

8. The audio sample rate control method of claim 5, wherein performing the sample rate control upon the AFE comprises:

when the audio source is not an audio source with a specific audio source type, keeping a current setting of a sample rate of the AFE unchanged.

9. The audio sample rate control method of claim 8, wherein the audio source with the specific audio source type is a radio broadcasting input or an audio input having a designated sample rate.

10. The audio sample rate control method of claim 1, wherein checking the sample rate control criterion comprises:

obtaining the checking result according to an audio source type of the audio source and an operating status of the AFE.

11. The audio sample rate control method of claim 10, wherein performing the sample rate control upon the AFE comprises:

when the audio source is not an audio source with a specific audio source type and the AFE is not working, setting a sample rate of the AFE by a sample rate of the audio source.

12. The audio sample rate control method of claim 10, wherein performing the sample rate control upon the AFE comprises:

when the audio source is not an audio source with a specific audio source type and the AFE is working, keeping a current setting of a sample rate of the AFE unchanged.

13. A non-transitory machine readable medium having a program code stored therein, wherein when executed by a processor, the program code instructs the processor to perform following steps:

when an audio source is required to undergo audio playback via an audio front-end (AFE), checking a sample rate control criterion; and

performing sample rate control upon the AFE according to a checking result of the sample rate control criterion.

14. The non-transitory machine readable medium of claim 13, wherein checking the sample rate control criterion comprises obtaining the checking result according to an operating status of the AFE;

and performing the sample rate control upon the AFE comprises;

when the AFE is not working, setting a sample rate of the AFE by a sample rate of the audio source.

15. The non-transitory machine readable medium of claim 13, wherein checking the sample rate control criterion comprises obtaining the checking result according to an operating status of the AFE;

and performing the sample rate control upon the AFE comprises;

when the AFE is working, keeping a current setting of a sample rate of the AFE unchanged.

16. The non-transitory machine readable medium of claim 13, wherein checking the sample rate control criterion comprises obtaining the checking result according to an audio source type of the audio source;

and performing the sample rate control upon the AFE comprises;

when the audio source is an audio source with a specific audio source type, setting a sample rate of the AFE by a sample rate of the audio source.

17. The non-transitory machine readable medium of claim 16, wherein the audio source with the specific audio source type is a radio broadcasting input or an audio input having a designated sample rate.

18. The non-transitory machine readable medium of claim 13, wherein checking the sample rate control criterion comprises obtaining the checking result according to an audio source type of the audio source;

and performing the sample rate control upon the AFE comprises;

when the audio source is not an audio source with a specific audio source type, keeping a current setting of a sample rate of the AFE unchanged.

19. The non-transitory machine readable medium of claim 13, wherein checking the sample rate control criterion comprises obtaining the checking result according to an audio source type of the audio source and an operating status of the AFE;

and performing the sample rate control upon the AFE comprises;

when the audio source is not an audio source with a specific audio source type and the AFE is not working, setting a sample rate of the AFE by a sample rate of the audio source.

20. The non-transitory machine readable medium of claim 13, wherein checking the sample rate control criterion comprises obtaining the checking result according to an audio source type of the audio source and an operating status of the AFE;

and performing the sample rate control upon the AFE comprises;

when the audio source is not an audio source with a specific audio source type and the AFE is working, keeping a current setting of a sample rate of the AFE unchanged.