Audio processing method and apparatus

Patent metadata

Field	Value
Publication number	US-9626985-B2
Application number	US-201415036926-A
Country	US
Kind code	B2
Filing date	Oct 21, 2014
Priority date	Nov 15, 2013
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

Audio processing methods and apparatus are provided. An audio processing method may include: receiving audio data packets; buffering the audio data packets to a buffer; reading the audio data packets from the buffer and playing the audio data packets; accumulating an actual total playing time length and a total sampling time length of the audio data packets that currently have been read from the buffer and have been played; and suspending reading and playing, when a sum of sampling time lengths of audio data packets that are buffered and unread in the buffer is less than or equal to a first threshold, until a sum of sampling time lengths of the audio data packets in the buffer that are unread is greater than or equal to a current network jitter estimated value.

First claim

What is claimed is:

1. An audio processing method, comprising:
receiving audio data packets;
buffering the audio data packets to a buffer;
reading the audio data packets from the buffer and playing the audio data packets;
accumulating an actual total playing time length and a total sampling time length of the audio data packets that currently have been read from the buffer and have been played; and
suspending reading and playing, when a current sum of sampling time lengths of the audio data packets that are buffered and unread in the buffer is less than or equal to a first threshold, until a sum of sampling time lengths of the audio data packets in the buffer that are unread is greater than or equal to a current network jitter estimated value, the current network jitter estimated value being obtained based on the accumulated actual total playing time length and the accumulated total sampling time length.

2. The audio processing method according to claim 1 , wherein the step of reading includes:
reading the audio data packets from the buffer according to time sequence numbers.

3. The audio processing method according to claim 1 , wherein the step of accumulating includes:
accumulating the actual total playing time length within a pre-determined time period from a preset moment to a current moment, and accumulating the total sampling time length of the audio data packets that have been read from the buffer and have been played within the pre-determined time period.

4. The method according to claim 1 , wherein:
the step of buffering includes:
buffering the audio data packets of a first audio file to the buffer; and
the step of accumulating includes:
accumulating an actual total playing time length of the first audio file and a total sampling time length of the audio data packets of the first audio file that currently have been read from the buffer and played.

5. The method according to claim 1 , wherein:
the current network jitter estimated value equals to a difference between the accumulated actual total playing time length and the accumulated total sampling time length.

6. The method according to claim 1 , wherein:
the current network jitter estimated value equals to a multiplication of a jitter risk coefficient β and a difference between the accumulated actual total playing time length and the accumulated total sampling time length.

7. The method according to claim 6 , wherein:
the jitter risk coefficient β ranges from 0.8 to 1.5.

8. The audio processing method according to claim 6 , wherein
the first threshold equals to 0 second.

9. A terminal device, comprising:
a receiving and buffering unit, configured to receive audio data packets and buffer the audio data packets to a buffer;
a reading and playing unit, configured to read the audio data packets from the buffer and play the audio data packets;
an accumulating unit, configured to accumulate an actual total playing time length and a total sampling time length of the audio data packets that currently have been read from the buffer and have been played; and
a buffering and playing unit, configured to suspend reading and playing when a current sum of sampling time lengths of the audio data packets that are buffered and unread in the buffer is less than or equal to a first threshold, until a sum of sampling time lengths of the audio data packets in the buffer that are unread is greater than or equal to a current network jitter estimated value, the current network jitter estimated value being obtained based on the accumulated actual total playing time length and the accumulated total sampling time length.

10. The terminal device according to claim 9 , wherein the reading and playing unit is further configured to read the audio data packets from the buffer according to time sequence numbers.

11. The terminal device according to claim 9 , wherein
the accumulating unit is specifically configured to accumulate the actual total playing time length within a pre-determined time period from a preset moment to a current moment and to accumulate the total sampling time length of the audio data packets that have been read from the buffer and have been played within the pre-determined time period.

12. The terminal device according to claim 9 , wherein
the receiving and buffering unit is specifically configured to buffer the audio data packets of a first audio file to the buffer; and
the accumulating unit is specifically configured to accumulate an actual total playing time length of the first audio file and a total sampling time length of the audio data packets of the first audio file that currently have been read from the buffer and played.

13. The terminal device according to claim 9 , wherein
the current network jitter estimated value equals to a difference between the accumulated actual total playing time length and the accumulated total sampling time length; or
the current network jitter estimated value equals to a multiplication of a jitter risk coefficient β and a difference between the accumulated actual total playing time length and the accumulated total sampling time length.

14. The terminal device according to claim 13 , wherein:
the jitter risk coefficient β ranges from 0.8 to 1.5.

Assignees

• Tencent Tech Shenzhen Co Ltd

Inventors

• Cao Muyong
• Li Junming
• Long Xingping
• Li Guangfa

Classifications

• H04L47/10

  Flow control; Congestion control · CPC title

• H04N21/4394

  involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams (arrangements characterised by components specially adapted for monitoring, identification or recognition of audio in broadcast systems H04H60/58) · CPC title

• H04L12/2665

  Electricity · mapped topic

• H04N21/439

  Processing of audio elementary streams · CPC title

• H04L43/087

  Jitter · CPC title