I might be trying the impossible - I can't get speakerphone audio to get properly interpreted by the mic on phone

[risharde]

I'm not particularly versed at sound science but I was hoping there was a way for me to send audio over a call from one phone to another phone
The receiving phone would have it's speaker on so the audio should bleed into the mic and then get translated by the app
Unfortunately it does pick up mostly the ending tones with strings like '%t%'
I'm wondering if there is a way to adjust the frequencies to cater for poor audio - like what one would expect on phone calls?
Any ideas?
Thanks!!

[risharde]

@ggerganov any advice / help would be appreciated - this would have so much potential for people with internet but have calls

[Manamama]

You may mean: https://en.m.wikipedia.org/wiki/ZMODEM

~ $ apt install lrzsz
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
lrzsz is already the newest version (0.12.21-rc1-0).
0 upgraded, 0 newly installed, 0 to remove and 28 not upgraded.
~ $ lsz --help
lsz version 0.13.0-alpha
Usage: lsz [options] file ...
or: lsz [options] -{c|i} COMMAND
Send file(s) with ZMODEM/YMODEM/XMODEM protocol
(X) = option applies to XMODEM only
(Y) = option applies to YMODEM only
(Z) = option applies to ZMODEM only
...