The conception of accompaniment

Hello, ( )I have to use parenthesis to clear my written to see. because my board can't make them in line by line?( ) The following is my naive ideas and need your confirmation?( 1 ) A raspy voice came over the squawk box announcing the arrival of what we had been waiting for. ( ) The logic structure of the whole sentence is:---------------The arrival of what we had been waiting for, that is announced to (in connection with) the accompaniment of a raspy voice came over the squawk box. Thank you for your help?Or, ( ) A raspy voice came over the squawk box, that made an accompaniment unto / reaching as far as[ it was announced] that the arrival of what we had been waiting for. I need your confirmation.