I've only used the Pi3B+ and Pi5, and neither supports TDM for simultaneous recording of the 4 channels provided by the Ensor-384 card.
There are several cards on the market that support up to 8 simultaneous channels in TDM,
for example, the Radxa rock 5C card and the Orange Pi 5 Pro card.
The Ensor-384 card has 4 analog input channels:
Channel 1 corresponds to microphone 1, on board.
Channel 2 can be configured as a differential microphone, a single-ended microphone, or a line-in.
Channel 3 can be configured as a differential microphone, a single-ended microphone, or a line-in.
Channel 4 corresponds to microphone 4, on board.
Recording with the Pi3B+ and Pi5 cards will always be in stereo (2 channels).
To record in stereo (2 channels), any combination of the 4 channels can be selected in the configuration file.
If you want to record only one of the two microphones on the card, you must record both channels and select a single channel in post-processing.
If, for example, you choose a combination of channels ch1 and ch3, since nothing is connected to ch3, only microphone 1 will be recorded.
In stereo (2 simultaneous channels), the Ensor-384 card supports 48,000, 96,000, 192,000, and 384,000 samples per second and 32 bits per sample.
In TDM (4 simultaneous channels), the Ensor-384 card supports 48,000, 96,000, and 192,000 samples per second and 32 bits per sample.
The recording system, consisting of the Pi card and the Ensor-384 card, operates autonomously; there is no need to use the keyboard or screen.
Simply configure everything necessary in the "ensor.conf" configuration file and power on the Pi board.
When the scheduled recording time ends, the recording is saved on the USB flash drive and the system shuts down.
There are several cards on the market that support up to 8 simultaneous channels in TDM,
for example, the Radxa rock 5C card and the Orange Pi 5 Pro card.
The Ensor-384 card has 4 analog input channels:
Channel 1 corresponds to microphone 1, on board.
Channel 2 can be configured as a differential microphone, a single-ended microphone, or a line-in.
Channel 3 can be configured as a differential microphone, a single-ended microphone, or a line-in.
Channel 4 corresponds to microphone 4, on board.
Recording with the Pi3B+ and Pi5 cards will always be in stereo (2 channels).
To record in stereo (2 channels), any combination of the 4 channels can be selected in the configuration file.
If you want to record only one of the two microphones on the card, you must record both channels and select a single channel in post-processing.
If, for example, you choose a combination of channels ch1 and ch3, since nothing is connected to ch3, only microphone 1 will be recorded.
In stereo (2 simultaneous channels), the Ensor-384 card supports 48,000, 96,000, 192,000, and 384,000 samples per second and 32 bits per sample.
In TDM (4 simultaneous channels), the Ensor-384 card supports 48,000, 96,000, and 192,000 samples per second and 32 bits per sample.
The recording system, consisting of the Pi card and the Ensor-384 card, operates autonomously; there is no need to use the keyboard or screen.
Simply configure everything necessary in the "ensor.conf" configuration file and power on the Pi board.
When the scheduled recording time ends, the recording is saved on the USB flash drive and the system shuts down.
Statistics: Posted by Mariano Esteban — Thu Oct 16, 2025 10:58 am