@jameslo ace! you are a star. thank you so much for the detailed replay!

@jameslo thank you very much for your response!

1. In the abstraction I replaced all the inlets to [receive] and [send] from the main, the [inlet~]s to [receive~] and [send~] from the main and the [outlet~] to [dac~]
2. in the main I created [pd~] and I am sending a message <pd~ start pd~-button.pd> calling the abstraction button.pd. But I get an error: "pd~-button.pd: can't open" (in a separate instance of Pd). The weird thing is that when I go to help of [pd~] and click on the message <pd~ start pd~-subprocess.pd> I don't get the error when I copy and past the help in my main.pd I get an error: "pd~-subprocess.pd: can't open".
3. In the button abstraction I have more abstractions. Will they run in the new separate instance of Pd as well?

thank you again @jameslo

could you maybe share an example of how did you make pd~ work?

thank you in advance

Hi everyone,

does anyone know how to use pd~ to run a subpatch in another thread?

The help is not much of a help. My subpatch has 4 inlets, 2 inlets~ and 2 outlets~

thank you in advance!

Thank you @alexandros

A bit over complicated I think. But it is working. Thank you very much @whale-av

all these commands work on linux:
ls -la /usr/bin/ | grep ^- | wc -l
ls -1 /usr/bin/ | wc -l
du -a /usr/bin/ | cut -d/ -f2 | sort | uniq -c | sort -nr

and many more...
but with shell you just get the file names in the folder like simple ls on linux.
I also tried to get a counter after ggee/shell but that is not working either

Thank you LiamG,
I am trying linux command but does not seem to work:

bang
|
ls -1 /usr/bin/ | wc -l
|
ggee/shell
|
print

Hello,
Is there a simple way for pd to read the number of files in a folder?

Thank you!

David just checked with my home speakers and it works perfectly fine! I will check more in depth tomorrow but I am sure that it will be fine.
Thank you very much

Thank you very much for your answer. I will measure tomorrow and get back to you. Thank you again for everything!

Thank you very much David! I am just curious to understand why you say dB does not mean anything.
If I have a file playing from my speakers and I have a sound level meter and I see 80dB and then I use a wave editor and I amplify it by -3dB then I will see on the meter 77dB.

I am trying to be able to amplify by lets say -20dB or +20dB the played sound file a.wav:

Thank you so much for your answers. I can understand all that (I have a phd on acoustics), but for example a signal that is 0dB (electroacoustic signal) and I want to reduce that to -3dB, is that doable with a command? Just to give an example wave editors can do ->amplify->-1dB

Yes I can understand that... but 20dB ->[dbtorms]->0.0001. If I use this value (0.0001) I don't get 20dB reduction or amplification on the signal.

To be honest with you I don't understand this conversion. Please see below the screenshot. Does this mean that if I want to amplify a signal 20dB I add 0.0001, it doesn't make sense.
Thank you very much again

Hi Solipp,
Thank you very much for your answer, I will try to do that with [dbtorms] and then 1-the value cause as I see here it is normalized to 100dB.

Hi everyone,
I was wandering if there is a way to amplify a signal by lets say 1dB. The way I control Volume is by [*~] from 0 to 1, but that does not tell us anything regarding dB.

Thanks

Sure will do have a good rest

Whale you have done a lot more testing than me... Thank you for the help