getid3_dts::channelArrangementLookup( int $index ): string

289	public static function channelArrangementLookup($index) {290		static $lookup = array(291			0  => 'A',292			1  => 'A + B (dual mono)',293			2  => 'L + R (stereo)',294			3  => '(L+R) + (L-R) (sum-difference)',295			4  => 'LT + RT (left and right total)',296			5  => 'C + L + R',297			6  => 'L + R + S',298			7  => 'C + L + R + S',299			8  => 'L + R + SL + SR',300			9  => 'C + L + R + SL + SR',301			10 => 'CL + CR + L + R + SL + SR',302			11 => 'C + L + R+ LR + RR + OV',303			12 => 'CF + CR + LF + RF + LR + RR',304			13 => 'CL + C + CR + L + R + SL + SR',305			14 => 'CL + CR + L + R + SL1 + SL2 + SR1 + SR2',306			15 => 'CL + C+ CR + L + R + SL + S + SR',307		);308		return (isset($lookup[$index]) ? $lookup[$index] : 'user-defined');309	}