The room is my bedroom wich categorizes it as B4. This means that A/V has to be bigger or equal to 0.25. The room has a volume of approximately 36 m3 , leaving us with a necessary equivalent sound-absorption-area of 9 m2. Also the max-reverb time is 0.5 seconds and you must not be exposed to a dB-level higher than 50 dB(A). Lastly the sound-isolation has to be between 47 dB and 57 dB, depending on the chosen specification.
The only real absorber in the room is the bed with blankets on it, the rest are hard surfaces. Maybe the wooden furniture contributes a little. The bed is 2m by 1.4m and stands in the corner. Due to its relative thickness (the mattress) it is also effective into the mid-frequency range. The room itself is rectangular, however there is one wall reaching into the room, creating a corridor in it. The reverb time measured is about 0.4s. Main problems are sound insulation from water-pipes in the house and steps of the neighbors above, as well as some flatter-echos.
