with the use of electronic filters and other methods we will simulate the sound of speech we can design future worlds we can design future worlds we can design future worlds we can design future worlds we can design future worlds we can design future worlds we can design future worlds we can design future worlds by this time you should have adjusted the volume of your phonograph or record player to a comfortable listening level for those with normal hearing and set the tone controls as instructed on the jacket as far as practical all of the people listening should be seated approximately six to eight feet from the speaker remember once the volume control is set do not readjust do not readjust