SPRESENSE Digital Recording Expansion Board Modifications

On the SPRESENSE page 2.12.2. How to Switch Analog and Digital, there are two steps (R49 and R50 remodeling and JP14 remodeling) to switch from analog microphone recording. In other words, if you change R49 and R50 to digital microphone setting, the channel is
Can it be recorded as an analog microphone?

The description on the page said, "Analog and digital selection is available for each microphone channel," so I was curious.

Reference URL
https://developer.sony.com/develop/spresense/docs/hw_docs_ja.html#_%E3%82%A2%E3%83%8A%E3%83%AD%E3%82%B0%E3% 81% A8% E3% 83% 87% E3% 82% B8% E3% 82% BF% E3% 83% AB% E3% 81% AE% E5% 88% E3% 82% E3% 82% E6% 81% BF% E3% 88% E6% 96% E6% 96% E6% E6% B3% 95

spresense

2022-09-29 20:29

1 Answers

I am in charge of SPRESENSE support for Sony.

To change from analog microphone recording to digital microphone recording, click 2.12.2. アナログマイクからデジタルマイクHow to Switch to Input " requires both of the following two steps:

Remove R50 and mount 0 ohms on R49 (or short with jumper wires, etc.).
Shorten the upper and lower solder lands of JP14 with jumper wires.

"Also, the document says ""Analog and digital selection is available for each microphone channel,"" but if you change the settings separately for each channel, you may not get enough performance."We recommend that you set all channels to analog or digital microphone input.

Thank you for your continued support at SPRESENSE.

SPRESENSE Support Team

2022-09-29 20:29

If you have any answers or tips

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