What would be a good microphone or setup to detect low frequency (<50hz) industrial sound? There is a constant low hum sound near me and I would like to make the spectrograph
![Microphone Proximity Effect (courtesy of Shure Inc.) Low frequencies... | Download Scientific Diagram Microphone Proximity Effect (courtesy of Shure Inc.) Low frequencies... | Download Scientific Diagram](https://www.researchgate.net/publication/292784420/figure/fig6/AS:324814272253957@1454453165890/Microphone-Proximity-Effect-courtesy-of-Shure-Inc-Low-frequencies-rise-as-the-sound.png)
Microphone Proximity Effect (courtesy of Shure Inc.) Low frequencies... | Download Scientific Diagram
![Amazon.com: Heil Sound PR48 Dynamic Microphone - Kick Drum Microphone and Low-Frequency Capturing Microphone - Bass Microphone : Musical Instruments Amazon.com: Heil Sound PR48 Dynamic Microphone - Kick Drum Microphone and Low-Frequency Capturing Microphone - Bass Microphone : Musical Instruments](https://m.media-amazon.com/images/I/71fx4CZqlnL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Heil Sound PR48 Dynamic Microphone - Kick Drum Microphone and Low-Frequency Capturing Microphone - Bass Microphone : Musical Instruments
![Audio-Technica U841A Omnidirectional Condenser Boundary Microphone, Frequency Response 30-20000 Hz, Low Frequency Roll-Off 80 Hz, 18 dB/octave, Impedance 200 ohms, Designed for surface-mount applications such as high-quality sound reinforcement, prof Audio-Technica U841A Omnidirectional Condenser Boundary Microphone, Frequency Response 30-20000 Hz, Low Frequency Roll-Off 80 Hz, 18 dB/octave, Impedance 200 ohms, Designed for surface-mount applications such as high-quality sound reinforcement, prof](http://salestores.com/stores/images/images_747/U841A.jpg)
Audio-Technica U841A Omnidirectional Condenser Boundary Microphone, Frequency Response 30-20000 Hz, Low Frequency Roll-Off 80 Hz, 18 dB/octave, Impedance 200 ohms, Designed for surface-mount applications such as high-quality sound reinforcement, prof
![e902 Dynamic Drum Microphone for Ultra Low Frequency Instrument Indoor Recording and Outdoor Performance - AliExpress e902 Dynamic Drum Microphone for Ultra Low Frequency Instrument Indoor Recording and Outdoor Performance - AliExpress](https://ae01.alicdn.com/kf/Sad39ca361cc948b2a892928328f72de1K.jpg_640x640Q90.jpg_.webp)
e902 Dynamic Drum Microphone for Ultra Low Frequency Instrument Indoor Recording and Outdoor Performance - AliExpress
![Amazon.com: IDOLmain UHF-X2 Professional Performance with Anti Feedback,Ultra Low Distortion, and No-Touch Frequency Scanning with Digital Pilot Technology Dual Wireless Microphone System New : Musical Instruments Amazon.com: IDOLmain UHF-X2 Professional Performance with Anti Feedback,Ultra Low Distortion, and No-Touch Frequency Scanning with Digital Pilot Technology Dual Wireless Microphone System New : Musical Instruments](https://m.media-amazon.com/images/I/51olf0zlhaL._AC_UF894,1000_QL80_.jpg)
Amazon.com: IDOLmain UHF-X2 Professional Performance with Anti Feedback,Ultra Low Distortion, and No-Touch Frequency Scanning with Digital Pilot Technology Dual Wireless Microphone System New : Musical Instruments
![SENNHEISER E602-II Ultra Low Frequency Instrument Guitar Microphone Large Base Drum Studio Live K-song Microphone - AliExpress SENNHEISER E602-II Ultra Low Frequency Instrument Guitar Microphone Large Base Drum Studio Live K-song Microphone - AliExpress](https://ae01.alicdn.com/kf/Sdffd13b4896644cdb3b9f00dce555822j/SENNHEISER-E602-II-Ultra-Low-Frequency-Instrument-Guitar-Microphone-Large-Base-Drum-Studio-Live-K-song.jpg)
SENNHEISER E602-II Ultra Low Frequency Instrument Guitar Microphone Large Base Drum Studio Live K-song Microphone - AliExpress
![MiCWL S618 Low-Frequency Headset Microphone Low distortion Ear-hook Wireless Microphone for Sennheiser Shure MiCWL S618 Low-Frequency Headset Microphone Low distortion Ear-hook Wireless Microphone for Sennheiser Shure](https://www.micwlaudio.com/image/cache/MJ-Headset/S618/SN128-034-500x500.jpg)
MiCWL S618 Low-Frequency Headset Microphone Low distortion Ear-hook Wireless Microphone for Sennheiser Shure
![Amazon.com: Shure BETA 27 Side-Address Supercardioid Condenser Microphone - Perfect for Instrument and Vocal Applications, Features Switchable Low- Frequency Filter and 3-Layer Internal Pop Filter : Musical Instruments Amazon.com: Shure BETA 27 Side-Address Supercardioid Condenser Microphone - Perfect for Instrument and Vocal Applications, Features Switchable Low- Frequency Filter and 3-Layer Internal Pop Filter : Musical Instruments](https://m.media-amazon.com/images/I/61C1GhBUpiL.jpg)
Amazon.com: Shure BETA 27 Side-Address Supercardioid Condenser Microphone - Perfect for Instrument and Vocal Applications, Features Switchable Low- Frequency Filter and 3-Layer Internal Pop Filter : Musical Instruments
![Photo4Less | 512 Audio Limelight Dynamic Vocal Microphone Broadcast-style with Hypercardioid Polar Pattern and Low-frequency Filter with XLR Mic Cable and Foam Windscreen Photo4Less | 512 Audio Limelight Dynamic Vocal Microphone Broadcast-style with Hypercardioid Polar Pattern and Low-frequency Filter with XLR Mic Cable and Foam Windscreen](https://www.photo4less.com/wp-content/uploads/2021/10/510810.jpg)