Raspberry pi4 and docker Voice distorted and too low

Hi, maybe I am to stupid to get this working.

I have a RPi 4 with buster and the latest docker image and a ReSpeaker Mic Array v2.0.

Many things are working fine.
I’ve got MQTT external, Pyaudio, Rhasspy Raven and Kaldi and so on.

I can record a Wake word and it is working ( if I press the play button the voice was well recorded).
But when i start the wake word and speak any sentence the voice is recorded distorted and the pitch too low so Rhasspy cant recognize my words.
I changed many options but the result is always the same.

Any help would be nice and helpfull
regards dsgra1