├── .gitignore ├── Bill_of_materials.csv ├── LICENSE ├── README.md ├── assembly ├── CONSTRUCTION.md ├── ref-mic.f3d ├── ref-mic.step └── stl │ ├── Body bottom.stl │ ├── Body top.stl │ ├── Grille.stl │ └── coupler.stl ├── calibration ├── CALIBRATION.md ├── correction-curve.csv ├── frequency-response.csv ├── raw_data │ ├── 2i2_frequency-response_1dBV_left.wav │ ├── 2i2_noise-floor-phantom_left.wav │ ├── 4191_cal-tone.wav │ ├── 4191_frequency-response_90-deg.csv │ ├── 4191_frequency-response_90-deg.wav │ ├── 4191_frequency-response_94dBSPL.csv │ ├── 4191_frequency-response_94dBSPL.wav │ ├── 4191_noise-floor.wav │ ├── EMM-6_cal-tone.wav │ ├── EMM-6_frequency-response_94dBSPL.csv │ ├── EMM-6_frequency-response_94dBSPL.wav │ ├── EMM-6_noise-floor.wav │ ├── measurement graphs.xlsx │ ├── preamp_frequency-response_+6.75dBV.wav │ ├── preamp_noise-floor_connected.wav │ ├── preamp_noise-floor_open.wav │ ├── ref mic_cal-tone.wav │ ├── ref mic_frequency-response_90-deg.csv │ ├── ref mic_frequency-response_90-deg.wav │ ├── ref mic_frequency-response_94dBSPL.csv │ ├── ref mic_frequency-response_94dBSPL.wav │ ├── ref mic_noise-floor.wav │ └── stimulus_10-40k_5s.wav ├── second-order-filters.txt └── sensitivity.txt ├── img ├── 0.1mm_elephants-foot.PNG ├── 0.2mm_elephants-foot.PNG ├── bottom-assembly.jpg ├── distortion-comparison.png ├── exploded.jpg ├── mic-header-photo.jpg ├── noise-spectrum-comparison.png ├── normalized-response.png ├── pcb.jpg └── trimmed-mini-XLR.jpg └── preamplifier ├── OpenRefMic-schematic.pdf ├── PREAMPLIFIER.md ├── preamp-schematic.png └── ref_mic ├── gerbers ├── ref_mic-B_Cu.gbr ├── ref_mic-B_Mask.gbr ├── ref_mic-B_Paste.gbr ├── ref_mic-B_Silkscreen.gbr ├── ref_mic-Edge_Cuts.gbr ├── ref_mic-F_Cu.gbr ├── ref_mic-F_Mask.gbr ├── ref_mic-F_Paste.gbr ├── ref_mic-F_Silkscreen.gbr ├── ref_mic-NPTH.drl ├── ref_mic-PTH.drl └── ref_mic-job.gbrjob ├── libs └── SSSS811101 │ ├── LICENSE.txt │ ├── SSSS811101.kicad_sym │ ├── SSSS811101.step │ └── SW_SSSS811101.kicad_mod ├── ref_mic.kicad_pcb ├── ref_mic.kicad_pro ├── ref_mic.kicad_sch ├── ref_mic.xml └── sym-lib-table /.gitignore: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/loudifier/OpenRefMic/HEAD/.gitignore -------------------------------------------------------------------------------- /Bill_of_materials.csv: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/loudifier/OpenRefMic/HEAD/Bill_of_materials.csv -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/loudifier/OpenRefMic/HEAD/LICENSE -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 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