Wireless Multitrack Audio Recording With Local Backup Synchronization
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Solution Overview
Problem
Existing wireless audio recording systems face issues with data loss due to transmission errors and interference, leading to incomplete or distorted audio recordings, especially during live performances.
Innovation Solution
A method for remotely controlling local audio devices to adjust gain and manage timestamping, allowing for real-time wireless transmission and synchronization of audio data, enabling automatic correction of transmission errors by replaying missed audio segments and ensuring accurate synchronization of multiple audio tracks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless transmission is used for audio recording, then mobility and flexibility are improved, but transmission errors and data loss occur
Solution Approach 1:
The system performs preliminary actions by capturing and storing audio data locally at each transmitter before transmission. This local recording ensures that even if wireless transmission fails due to interference or errors, the audio data is already preserved and can be retrieved later, thus resolving the contradiction between mobility and transmission reliability.
Solution Approach 2:
The system creates copies of audio data at multiple locations - each transmitter creates a local copy of the audio it captures, and the central recorder creates a copy of all received transmissions. This redundancy through copying ensures that if one transmission path fails, the data exists in other locations, resolving the reliability issue while maintaining wireless mobility.
2Reliability
If redundant receiver circuits are added to correct transmission errors, then reliability is improved, but device complexity increases
Solution Approach 1:
The system extracts the error correction function from the receiver circuits and relocates it to the central recorder. The receivers only need to capture and forward audio data, while the recorder handles the complex task of detecting transmission errors, requesting retransmissions, and assembling the final audio file. This extraction reduces receiver complexity while maintaining or improving overall reliability.
Solution Approach 2:
The central recorder acts as an intermediary between the transmitters and the final audio output. It mediates the error correction process by monitoring received data, identifying transmission errors, and coordinating retransmission requests with specific transmitters. This intermediary approach centralizes the complexity of error correction while keeping individual receiver circuits simple.
3Ease of operation
If audio gain is adjusted locally at the recorder, then ease of operation is improved, but remote control capability is reduced
Solution Approach 1:
The system implements multi-functionality in the wireless communication protocol, enabling it to carry both audio data and control commands. The same wireless interface used for audio transmission also transports gain adjustment commands from the recorder to remote transmitters, eliminating the need for separate control wiring and maintaining remote control capability while enabling easy audio adjustment.
Solution Approach 2:
The system incorporates feedback mechanisms where the recorder can send adjustment commands to remote transmitters and receive status information back. This feedback loop allows the operator to adjust audio gain remotely and verify the changes, combining the ease of local-like control with the versatility of remote operation.
Data Source
AI summary
Systems and methods for wirelessly recording multi-track audio files without the data corruption or loss of data that typically occurs with wireless data transmission. In some aspects, each performer is equipped with a local audio device capable of locally recording the respective performer's audio while also transmitting it to a master recorder. Functions of the local audio device may be adjusted remotely. The locally recorded audio may be used to repair or replace any audio lost or corrupted during transmission to the master recorder. Such repair or replacement may be performed electronically or via playback of the locally recorded audio. In other aspects, a master recorder is not required since all locally recorded audio may be combined or otherwise processed post-recording. Locally recorded audio may include identifiers to aid in post-recording identification of such audio. A multi-memory unit is also provided to facilitate manipulation and processing of audio files.