Lvn[20]:=71.7;

Lvn[21]:=71.1;

Lvn[22]:=70.5;

Lvn[23]:=70;

Lvn[24]:=69.5;

Lvn[25]:=69;

Lvn[26]:=68.5;

Lvn[27]:=68.1;

Lvn[28]:=67.7;

Lvn[29]:=67.3;

Lvn[30]:=67;

a1[1]:=0.22;

a1[2]:=0.22;

a1[3]:=0.22;

a1[4]:=0.22;

a1[5]:=0.22;

a1[6]:=0.22;

a1[7]:=0.22;

a1[8]:=0.22;

a1[9]:=0.25;

a1[10]:=0.27;

a1[11]:=0.3;

a1[12]:=0.31;

a1[13]:=0.33;

a1[14]:=0.34;

a1[15]:=0.33;        {Частотная характеристика звукопоглощения крыши}

a1[16]:=0.33;

a1[17]:=0.32;

a1[18]:=0.35;

a1[19]:=0.38;

a1[20]:=0.41;

a1[21]:=0.41;

a1[22]:=0.42;

a1[23]:=0.42;

a1[24]:=0.42;

a1[25]:=0.42;

a1[26]:=0.42;

a1[27]:=0.42;

a1[28]:=0.42;

a1[29]:=0.42;

a1[30]:=0.42;

a2[1]:=0.04;

a2[2]:=0.04;

a2[3]:=0.04;

a2[4]:=0.04;

a2[5]:=0.04;

a2[6]:=0.04;

a2[7]:=0.04;

a2[8]:=0.04;

a2[9]:=0.036;

a2[10]:=0.033;

a2[11]:=0.03;

a2[12]:=0.03;