Interlaced Audio Packetization for Low-Latency Loss Recovery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional audio data transmission methods suffer from discontinuous data and jitter sound due to inadequate compensation for packet loss during low-latency transmission, which is not effectively addressed by existing compensation techniques.
Innovation Solution
The method involves rearranging audio data into interlaced groups with non-consecutive numbering and applying different packetization delays to form network packets, allowing for staggered transmission and extended de-packetization time at the receiver, followed by data recovery using received data points to compensate for missing data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If audio data is transmitted with low latency over a network, then transmission speed is improved, but packet loss occurs leading to discontinuous data and jitter sound
Solution Approach 1:
The audio data is segmented into multiple groups of network packets using interlaced packetization, where consecutive audio data points are distributed across different packet groups. This segmentation allows the receiver to recover from packet loss more effectively by using data from received packets to compensate for missing data in other packets, thereby maintaining data completeness while enabling fast transmission.
Solution Approach 2:
The transmitter performs preliminary interlaced packetization and adds different packetization delays to different packet groups before transmission. This preliminary arrangement ensures that when packets are received out of order or with losses, the receiver has already been provided with a structure that facilitates efficient data recovery and compensation, reducing the impact of packet loss on audio quality.
2Reliability
If conventional compensation methods are used at the receiver, then some data loss can be addressed, but discontinuous data and jitter sound persist due to inadequate compensation
Solution Approach 1:
The receiver implements a feedback-based compensation mechanism where it identifies missing audio data points and uses received data points to compensate for the missing ones. The system continuously monitors packet arrival, detects losses, and applies compensation algorithms that reference already-received data, creating a closed-loop system that actively maintains audio quality despite network losses.
Solution Approach 2:
The system changes the packetization structure parameter by using interlaced grouping with different delays for different packet groups. This parameter change transforms the traditional sequential packetization into an interlaced pattern, which fundamentally alters how data loss propagates through the audio stream and enables more effective compensation by distributing redundancy across multiple packet groups.
3Device complexity
If audio data is packetized sequentially, then processing is simple, but all packets must be received in order causing delays and vulnerability to packet loss
Solution Approach 1:
Instead of simple sequential packetization, the audio data is segmented into interlaced groups where every nth data point is placed in the same packet group. This segmentation strategy increases processing complexity slightly but dramatically reduces de-packetization time by allowing parallel processing and enabling the receiver to reconstruct audio data even when some packet groups are lost or delayed.
Solution Approach 2:
The system introduces dynamic packetization delays for different packet groups, where the delay applied to each group is determined by its group identifier. This dynamic approach allows the transmitter to control the timing of different packet groups, and the receiver to use this information to synchronize and reorder packets efficiently, reducing overall de-packetization time while maintaining simplicity in the basic packetization logic.
Data Source
AI summary
A method for processing audio data and an audio data processing system are provided. The method is operated between a transmitter and a receiver. The transmitter receives audio data, and forms a data set that includes multiple data points. The data points are rearranged in an interlaced manner, and are packetized to form multiple groups of network packets. The network packets are assigned with sequence-identifiable numbers according to a formation sequence. Further, delays can be added in between different groups of the network packets, and then the network packets are rearranged. The multiple groups of the network packets are transmitted to the receiver after data rearrangement, packetization, and packet rearrangement. The receiver then de-packetizes the network packets, and performs data recovery with error handling, so as to generate output audio data.