Looking for help with MCI API sound recording / recording sound with VBA

Hello coders!

I have a problem - and it is probably due to using MCI API tool as a recorder. Let me explain you what I want to achive and where the issue is.

MY AIM:
My idea was to make an application for myself which would help me learning and reminding foreign languages. I have created a database in a worksheet that contains words devided into columns. First columns contains polish words, second english and last one is filled with german (see attached image of structutre). I have already made the code that reads the text from column to column, goes down in row and repeats whole the procedure as many times as I wish to. I have also managed to write the code that uses MCI API to record all the text that was read (that was my main aim, because I want to create sound files and remind language when commuting work etc.). Everything work perfectly fine, but...
Attachment 22119

PROBLEM:
The problem is in a quality of recording itself. When I play it I can hear a noise in the background, buzzing. It is conspicuous enought to unable comfortale listening and learning. (check the attachment for .wav sample file).

CODE:

Code:

---

Function Recording()
Dim MciMsgOpen As Integer
Dim MciMsgRec As Integer
MciMsgOpen = mciSendString("open new Type waveaudio alias Rec1", "", 0, 0)
MciMsgRec = mciSendString("record Rec1", "", 0, 0)
End Function

Function Saving()
Dim MciMsgStop As Integer
Dim MciMsgSave As Integer
Dim MciMsgClose As Integer
MciMsgStop = mciSendString("stop Rec1", "", 0, 0)
MciMsgSave = mciSendString("save Rec1 c:\Audio.wav", "", 0, 0)
MciMsgClose = mciSendString("close Rec1", "", 0, 0)
 End Function

---

CHECKED:
Firstly I was almost sure that it is due to STEREO MIX I'm using as a microphone to record output sounds. Nevetheless I have also tried to record sounds from another application (simple recorder which is installed on every Windows) and the sound was perfectly pure. That is why I think the problem is with MCI API itself but I may be wrong.

HELP:
I would be very greatful if somebody found the solution. I have already spend many hours with no effect at all. Any hint or tip where to start finding the solution would be a huge help.

SOLUTION:
Unknow.

Thank you very much for your time.
Michał