keytap doesn't collect training data

[yurivict]

On FreeBSD keytap immediately goes to the "[+] Predicting" line:

$ work/.build/keytap -c3 -C2
Usage: work/.build/keytap input.kbd [input2.kbd ...] [-cN] [-pF] [-tF]
-cN - select capture device N
-CN - select number N of capture channels to use
-pF - prediction threshold: CC > F
-tF - background threshold: ampl > F*avg_background

Found 4 capture devices:
- Capture device #0: '/dev/dsp'
- Capture device #1: '/dev/dsp3'
- Capture device #2: '/dev/dsp4'
- Capture device #3: '/dev/dsp7'
Attempt to open capture device 3 : '/dev/dsp7' ...
Opened capture device succesfully!
DeviceId: 2
Frequency: 16000
Format: 33056 (4 bytes)
Channels: 2
Samples: 512
Audio Filter: 1
Cutoff frequency: 100 Hz
Capturing audio ..
[+] Collecting training data
[+] Training
Failed to train the following keys:
[+] Ready to predict. Keep pressing keys and the program will guess which key was pressed
based on the captured audio from the microphone.
[+] Predicting

It doesn't seem to collect any training data.

[ggerganov]

You need to first collect training data using the record tool.
For example:

./record train.kbd -c3

Press each key that you want to predict at least 3 times.

After that, use the generated train.kbd file with keytap or keytap-gui like this:

./keytap train.kbd
./keytap-gui train.kbd