For the Ambisonics principle of the AMBEO VR MIC to work properly, it is important that the signals of the four microphone capsules are recorded separately on four tracks using identical microphone preamplifiers, respectively.
For more information on the software, refer to AMBEO A-B format converter.
We recommend proceeding as follows:
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Set the same gain for each of the four channels of the microphone preamplifier.
Even slight deviations can already influence the spatial image.
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For calibrating the microphone preamplifier, use a test tone generator with 48 V phantom power or a similar signal source with a constant signal.
Suitable test tone generators:
- Superlux Pink Stick
- Canford Phantone Tone Generator
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Fine-adjust the preamplifier gains to identical recording levels based on the input from the test tone generator generator.
If there is no possibility to fine-adjust and monitor the preamplifier gains before the recording:
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For each channel, record the signal generated by the test tone generator.
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During post-production using your DAW or software, adjust the test tone on the four channels to exactly the same level.
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Please note: any changes to gain made during the course of recording require an equal change across all four channels.
We recommend using a field recorder with digitally controlled gain settings that can be linked between channels.
The signals can now be converted to the Ambisonics' B-format using the AMBEO A-B format converter.
