XY-Type Microphone Unit Vibration Plate Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-resolution audio recording systems face challenges in effectively capturing and recording high-resolution sound sources without omitting middle section sounds, particularly in XY-type microphone units where sounds from the left and right middle sections are often omitted.
Innovation Solution
An XY-type microphone unit configuration where a pair of left and right microphones are placed with sound pickup axes crossing each other, comprising high-band and low-band microphone units, with specific placement of vibration plates to prevent middle omission phenomena across various frequency ranges, including sounds higher than or equal to 40 kHz and lower than 40 kHz.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pair of microphones are placed with sound pickup axes crossing each other in an XY-type arrangement, then stereo recording capability is achieved, but middle section sounds are omitted
Solution Approach 1:
The patent divides the sound frequency range into multiple bands (low-band and high-band) and uses separate microphones for each band. By segmenting the frequency coverage, the system can capture middle section sounds that would otherwise be omitted in a conventional XY arrangement, while maintaining stereo recording capability.
2Measurement precision
If high-band and low-band microphone units are used separately, then high-resolution sound capture is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple microphone units (high-band and low-band) into a single integrated XY-type microphone device. The vibration plates of all microphone units are arranged on the same straight line in the diaphragm direction, creating a unified structure that achieves high-resolution sound capture without excessive complexity.
3Reliability
If vibration plates are arranged on the same straight line in plan view, then phase deviation is prevented, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies that vibration plates should be arranged on the same straight line when viewed from the diaphragm direction (another dimension), rather than requiring perfect alignment in the plan view. This dimensional shift in the alignment requirement makes manufacturing more feasible while still preventing phase deviation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively records high-resolution sound sources by preventing the middle omission phenomenon for both lower and higher frequency sounds, ensuring comprehensive sound capture and phase deviation prevention.
Implementation Method 1
a high-band microphone unit of the left microphone unit that collects sounds of a relatively high band, and a low-band microphone unit of the left microphone unit that collects sounds of a relatively low band
Data Source
AI summary
An XY-type microphone unit and a sound recording apparatus are provided which can effectively record a high-res sound source or the like. The XY-type microphone unit includes a left microphone unit and a right microphone unit. The left microphone unit includes a high-band microphone unit of the left microphone unit which collects sounds of a high band and a low-band microphone unit of the left microphone unit which collects sounds of low band. The right microphone unit includes a high-band microphone unit of the right microphone unit which collects sounds of a high band and a low-band microphone unit of the right microphone unit which collects sounds of a low band. Vibration plates of the high-band microphone unit, the low-band microphone unit, the high-band microphone unit, and the low-band microphone unit are placed on approximately the same straight line in a plan view.