The free-floating tweeter is outside the speaker box, meaning sound radiates in all directions to give a deeper, wider sound impression, similar to the tones you would hear during a live performance or in a recording studio.

ENGADGET: Philips breathes new life into home stereos with SoundSphere

The 'Dean scream' dirty trick which, as you know, was created by filtering out the deafening crowd's roar to create the false impression of a maniacal yell (a sound clip used to this day during the Political Junkie segment on NPR's Talk of the Nation).

NPR: Ready, Ames, Fire: The Iowa Straw Poll

It is also possible that the market commentators wanted to make a good impression on listeners and so said things that the commentators believed would sound sensible.

FORBES: How Biases Creep In

It was fitting that Lampard rounded off the rout with his fourth goal in the dying seconds, turning home his effort inside the area as Villa gave every impression of a side who simply could not wait for the whistle to sound.

BBC: Chelsea 7-1 Aston Villa

Once you enter the dark space where a dramatic spotlight shines on a 100sqm patch of falling water, the sound of the shower and the feeling of moisture in the air immediately gives the familiar impression of being caught in a downpour.

BBC: It is raining indoors in London