I'm just getting into recording music, so I'm very new at this.
My preferred method of recording would be to connect the audio output of my keyboard (in this case a Casio CTK-4400) to the auxiliary audio input of my laptop using a 1/4 inch TRS to 3.5 mm TRS male-male cable. I purchased the necessary cable, used it to connect my keyboard to my laptop, and recorded the keyboard's output through Audacity. However, the recordings I made contained a great deal of loud white noise. Additionally, the output of the keyboard (even at a very low volume) registers as a fairly high volume on the keyboard.
What do I need to buy/do to get better audio from my keyboard in this way? Do I need to attenuate the signal somehow (with an amp maybe?) before it reaches the laptop? Or am I missing some vital step in the process?
Thanks for any and all help!