Does the frequency of a pure tone being played through a stereo have any effect on the lifetime of the stereos battery?
ie would a tone of frequency ~ 50 Hz use less power/energy from the stereos battery therefore play longer than a frequency of ~10000Hz?
2006-09-22 04:33:33 · 5 answers · asked by benabean87 2 in Science & Mathematics ➔ Physics
As long as the real (not perceived or subjective!) amplitude is the same, power usage should be identical
2006-09-22 04:35:58 · answer #1 · answered by Anonymous · 1⤊ 0⤋
If everything else is equal - the lower frequencies will chew up more power because the speaker moves at a lower rate and must move further to generate the same sound pressure in order to remain at the same volume in Db's - not the "perceived" volume.
More speaker excursion (movement) equals more current necessary for the opposing magnetic fields.
2006-09-22 11:54:38 · answer #2 · answered by LeAnne 7 · 0⤊ 0⤋
Generally speaking, a lower frequency sound will take more power to achieve the same volume than a higher frequency sound.
2006-09-22 11:45:15 · answer #3 · answered by dirtyrubberduck 4 · 0⤊ 0⤋
Yes. Higher frequency needs more power to drive the speakers.
2006-09-22 11:38:27 · answer #4 · answered by Dr M 5 · 1⤊ 0⤋
more important is the amplitude = loudness
2006-09-22 11:43:45 · answer #5 · answered by Anonymous · 0⤊ 0⤋