I am using MixMonitor to record the both sides of the conversation and it’s saved as a wav file. I then convert the wav file to mp3 to save disk space. The problem is the original wav file is 8kbit and 8000Hz Mono audio file which is a low quality audio. I am wondering if there is a way to record with a better quality in asterisk. Right now i am not concerned about the disk space or the format of the audio file (I can convert it to something else later).
For some reason I have this idea in my mind that all the phone lines are 8kbit and there is nothing we can do about it to improve the quality but I am not sure if i am mistaken or not.
Are there any suggestions?