Denoise does not work in Asterisk 20

Asterisk Asterisk Support
1

Hello, can someone tell me how to enable denoise for outgoing audio and disable it for incoming audio?

Unfortunately, this doesn’t work directly by dialplan:

exten => _X.,1,Answer()
same => n,Set(DENOISE(rx)=off)
same => n,Set(DENOISE(tx)=on)

When I use this in confbridge.conf , the noise reduction works, but it also applies to incoming audio, rather than just outgoing audio:

[default_user]
...
dsp_drop_silence=yes