Creating a decent sounding room for recording voiceover narration is not necessarily a major effort. Some simple approaches to controlling the acoustic environment can include:
- Using thick drapes or hanging thick blankets to absorb sound reflections and help deaden a room.
- Home environments can use pillows strategically placed around the microphone to reduce reflections
- Commercially available acoustic control products can help address specific problems in an effective manner, though these can end up being somewhat expensive.
- You can build simple but effective home-built acoustic control devices such as a board covered with standard insulation, covered with fabric, hanging thick rugs hung on a wall, etc.
The key is to first identify the specific characteristics of the acoustic problem, and determine how is can be addressed. For example:
- First, find the best position within the room, with minimum background noise, reflections, and standing waves. Then work to address any remaining issues.
- Computer noise can be reduced by moving the CPU away from the recording position, covering the CPU with a heavy rug or foam isolation (making sure to leave an opening for the cooling fan air), etc.
- Standing waves require larger surface treatments. This is where you need acoustic panels, rugs and foam wall covering, etc. Or move some furniture around, such as placement of high shelves, to change the overall acoustic characteristics of the room.
- A microphone position that sounds too lively can be addressed by a smaller treatment in the vicinity of the mic, such as using acoustic foam in the immediate recording area, pillows, etc.
You may need to continue experimenting to determine what the source of the issues is, and how it can best be addressed.