Hi;
I recently designed a system to interface two transceiver radios to a single shoulder mounted microphone. The user carries both radios back mounted and controls volume and transmitter selection from a small front worn control module. The system works well but now I want to expand it by outputting the mixed audio to a video camera microphone in jack and capture this radio traffic on the video sound track. The caveat is I can't lose the ambient sounds the camera would normally pick up with its own mic since the cameras mic will be cut out when an external source is jacked in.
I'm planning to to do this by capturing the ambient sound with a separate condenser mic mounted on the camera (replacing the cameras microphone) then mix that with the radio traffic and jack the entire mix into the camera. This mixer must be very small and light weight since it will be on a head mounted camera.
I need advice on a good mic amplifier and op amp to use as a mixer that will operate on a CR2032 cell. I also don't have a clue what kind of mic is in a video camera like the Contour Roam or Go Pro. They pick up sound very well. Right now I'm using a basic condenser mic to prototype the circuit.
Any suggestions?
I recently designed a system to interface two transceiver radios to a single shoulder mounted microphone. The user carries both radios back mounted and controls volume and transmitter selection from a small front worn control module. The system works well but now I want to expand it by outputting the mixed audio to a video camera microphone in jack and capture this radio traffic on the video sound track. The caveat is I can't lose the ambient sounds the camera would normally pick up with its own mic since the cameras mic will be cut out when an external source is jacked in.
I'm planning to to do this by capturing the ambient sound with a separate condenser mic mounted on the camera (replacing the cameras microphone) then mix that with the radio traffic and jack the entire mix into the camera. This mixer must be very small and light weight since it will be on a head mounted camera.
I need advice on a good mic amplifier and op amp to use as a mixer that will operate on a CR2032 cell. I also don't have a clue what kind of mic is in a video camera like the Contour Roam or Go Pro. They pick up sound very well. Right now I'm using a basic condenser mic to prototype the circuit.
Any suggestions?
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