Sound Recording Apparatus Position Data Association
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Solution Overview
Problem
Existing sound reproduction techniques, such as Ambisonics and wave field synthesis, often result in unnatural sound reproduction due to inaccurate microphone placement and position changes during recording.
Innovation Solution
A sound recording apparatus that acquires sound data from multiple microphones and associates it with position data detected by sensors, allowing for zenith correction and rotation correction of sound data to match the image data, thereby reducing unnaturalness in sound reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If microphones are placed highly accurately in terms of arrangements and directions, then sound field reproduction accuracy is improved, but device complexity and operation difficulty increase
Solution Approach 1:
The patent changes the parameter of microphone arrangement from fixed high-precision requirements to flexible positions by recording position information. This allows microphones to be placed at various positions without compromising sound field reproduction accuracy, as the position data enables digital correction during playback.
Solution Approach 2:
The patent creates a digital copy of the microphone position information and uses this copy to correct the sound field during playback. Instead of physically repositioning microphones, the system copies position data and applies computational corrections to achieve accurate sound field reproduction.
2Adaptability or versatility
If the recording device is moved during capture, then recording flexibility is improved, but sound reproduction naturalness deteriorates
Solution Approach 1:
The system uses position sensor data as feedback to continuously adjust and correct the sound field reproduction. By monitoring the recording device's position in real-time and using this information to correct the audio output, the system maintains natural sound reproduction even when the device moves during capture or playback.
Solution Approach 2:
The patent makes the sound field reproduction dynamic by allowing the recording device to move during capture while recording position information. During playback, the system dynamically adjusts the sound field based on the recorded position data, enabling natural sound reproduction regardless of device movement during recording.
3Measurement precision
If position data is recorded and associated with sound data, then sound reproduction accuracy is improved, but data processing complexity increases
Solution Approach 1:
The patent merges position data and sound data into a unified dataset with synchronized timestamps. By combining these data types into a single integrated structure, the system simplifies processing while maintaining accurate position-sound correlation, avoiding the need for separate complex processing pipelines.
Solution Approach 2:
The system performs preliminary association of position data with sound data during the recording phase by synchronizing timestamps. This preliminary action reduces later processing complexity because the data is already correlated and organized, eliminating the need for complex post-processing alignment operations.
Data Source
AI summary
An apparatus, system, and method, each of which: acquires sound data generated from a plurality of sound signals collected at a plurality of microphones; acquires, from one or more sensors, a result of detecting a position of the sound recording apparatus at a time point during a time period when the plurality of sound signals is collected; and stores, in a memory, position data indicating the position of the sound recording apparatus detected at the time point, and sound data generated based on a plurality of sound signals collected at the microphones at the time point at which the position was detected, in association with each other.