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Uplink and downlink voice drive processing method, device and system

A processing device and processing method technology, applied in the field of communications, can solve the problems of unstable transmission time difference between uplink and downlink voice data frames, unable to ensure stable transmission time difference between uplink and downlink voice data frames, unable to achieve echo suppression effect, etc. The effect of stable transmission time difference

Active Publication Date: 2013-08-14
LEADCORE TECH
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Problems solved by technology

In addition to the above factors, the network does not send downlink voice data for a certain period of time, network errors, etc. will also lead to instability in the transmission time difference of uplink and downlink voice data frames
[0007] Based on the above description, it can be seen that the existing uplink and downlink voice driving methods cannot ensure the stability of the transmission time difference between the uplink and downlink voice data frames, which makes the terminal unable to achieve a stable echo suppression effect when using the AEC method for echo suppression of uplink voice data

Method used

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  • Uplink and downlink voice drive processing method, device and system
  • Uplink and downlink voice drive processing method, device and system
  • Uplink and downlink voice drive processing method, device and system

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Embodiment Construction

[0059] In order to solve the problem of unstable transmission time difference between uplink and downlink voice data frames in the prior art and ensure stable synchronization of uplink and downlink voice data, embodiments of the present invention provide an uplink and downlink voice driving processing method and device, when there is no valid downlink data packet When each data packet in the uplink receiving queue is full, the data stored in the last data packet is continuously updated with the received new uplink voice data; thus, the transmission between the uplink and downlink voice data frames is ensured The time difference is stable, so that the terminal can use the AEC algorithm to stably suppress the echo in the uplink voice data.

[0060] figure 2 It is a schematic flow chart of a downlink voice drive processing method according to an embodiment of the present invention. The method can be applied to a downlink voice drive processing module of a terminal to perform drive p...

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Abstract

The invention discloses an uplink and downlink voice drive processing method, an uplink and downlink voice drive processing device and an uplink and downlink voice drive processing system. The method comprises the following steps of: performing downlink voice drive processing: when determining to transmit downlink voice data, detecting whether downlink effective data packets exist or not, otherwise, transmitting empty packets; and performing uplink voice drive processing: receiving uplink voice data, judging whether each data packet in an uplink receiving queue is full or not, if so, adding the received voice data into the last data packet of the receiving queue. The method, the device and the system can ensure stable time difference between the time of starting and transmitting uplink voice data frames and the time of starting and transmitting downlink voice data frames so as to make a terminal fulfill the aim of stably inhibiting echoes by an AEC algorithm.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to a method, device and system for driving and processing uplink and downlink voices. Background technique [0002] A very important function of terminals such as mobile phones is voice transmission. It is very important to ensure voice quality in voice transmission, and one of the key factors affecting voice quality is echo. [0003] At present, when the terminal performs voice transmission, the acoustic echo cancellation (AEC) method is generally used for echo suppression. The principle of the AEC method is: based on the correlation between the loudspeaker signal and the multipath echo generated by the loudspeaker signal, establish a voice model of the far-end signal, use the voice model to estimate the echo, and continuously modify the coefficients of the filter to make The echo estimation value is closer to the real echo, and then the echo estimation value is removed from the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M9/08
Inventor 高兵陶然
Owner LEADCORE TECH
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