The first term you are likely to encounter is FREQUENCY, the musical tones a
speaker can reproduce. It is measured in Hertz (or, in the old days, Cycles per
Second). Human hearing is considered to range from 20 Hz (very low bass tones) to
20 kHz or 20,000 Hz (the very highest treble). Theoretically, a speaker reproducing
that range would sound realistic. But Frequency Range or width is not the most
important factor in determining lifelike sound.
The Ultimate Dimension: REAL-TIME SOUND
Even speakers which meet all of the above requirements with flying colors, or sounds, to be more precise, may not be pleasing to the ear. And herein lies the greatest challenge to speakers since the beginning of SPEAKER time – and that dimension is, in fact, REAL-TIME SOUND.
If you are listening to a live performance, you hear the delicate vibrato of the singers, and the pure sound of each instrument, without distortion. But once the sound has been recorded, and replayed through a speaker, that REAL-TIME SOUND is almost certainly distorted by the very nature of speakers themselves. Speakers create sound through vibration, but once the singer stops singing or the instrument stops playing a note, we want the vibration that created THAT sound to dissipate, so we can hear the next sound being played or sung. If the speaker keeps vibrating and resonating after that sound ceases, it distorts the next wave of music being played. It very literally changes the timbre of the original sounds recorded. And nearly all speakers continue to resonate after the initial sound has ceased.
Theoretical Physicist John Wheeler said, "Time is what prevents everything from happening at once.” And THAT is what the ULTIMATE speaker accomplishes. It prevents everything from happening at once. It PURIFIES the music by STOPPING the sounds that should have stopped resonating after they were played. The ULTIMATE DIMENSION for measuring sound is REAL-TIME SOUND.
More important than frequency width or range is whether the system can reproduce all the sounds at the same volume at which they were created and recorded. That doesn't mean that all the sounds are at the same volume, but that the speaker is what is called "flat," and doesn't change or interfere with the original mix of tones. Any mechanical or electronic interference can distort the delicate timbre of a voice or instrument in an effort to project and amplify the music; it may alter, mask or muddy the subtle nuances and delicate dimensions of sound, rendering them unnatural. So a "flat" speaker reproduces sound most accurately. The measurement of faithfulness to original amplitude is called Amplitude Tolerance.
The Ultimate Dimension: REAL-TIME SOUND
Even speakers which meet all of the above requirements with flying colors, or sounds, to be more precise, may not be pleasing to the ear. And herein lies the greatest challenge to speakers since the beginning of SPEAKER time – and that dimension is, in fact, REAL-TIME SOUND.
If you are listening to a live performance, you hear the delicate vibrato of the singers, and the pure sound of each instrument, without distortion. But once the sound has been recorded, and replayed through a speaker, that REAL-TIME SOUND is almost certainly distorted by the very nature of speakers themselves. Speakers create sound through vibration, but once the singer stops singing or the instrument stops playing a note, we want the vibration that created THAT sound to dissipate, so we can hear the next sound being played or sung. If the speaker keeps vibrating and resonating after that sound ceases, it distorts the next wave of music being played. It very literally changes the timbre of the original sounds recorded. And nearly all speakers continue to resonate after the initial sound has ceased.
Theoretical Physicist John Wheeler said, "Time is what prevents everything from happening at once.” And THAT is what the ULTIMATE speaker accomplishes. It prevents everything from happening at once. It PURIFIES the music by STOPPING the sounds that should have stopped resonating after they were played. The ULTIMATE DIMENSION for measuring sound is REAL-TIME SOUND.
To make sure that all the audible tones are reproduced exactly as they were recorded, and that the speaker doesn't change the sound, you look at Amplitude Tolerance. You want to be sure that the amplitude of the speaker does not deviate beyond a range that is essentially imperceptible to the human ear. An amplitude tolerance of +/- 3dB tells you that the speaker's response, relative to frequency, does not deviate more than 3 Decibels from the center, or the original volume at which each element of the music was recorded. But once again, all is relative.
The Ultimate Dimension: REAL-TIME SOUND
Even speakers which meet all of the above requirements with flying colors, or sounds, to be more precise, may not be pleasing to the ear. And herein lies the greatest challenge to speakers since the beginning of SPEAKER time – and that dimension is, in fact, REAL-TIME SOUND.
If you are listening to a live performance, you hear the delicate vibrato of the singers, and the pure sound of each instrument, without distortion. But once the sound has been recorded, and replayed through a speaker, that REAL-TIME SOUND is almost certainly distorted by the very nature of speakers themselves. Speakers create sound through vibration, but once the singer stops singing or the instrument stops playing a note, we want the vibration that created THAT sound to dissipate, so we can hear the next sound being played or sung. If the speaker keeps vibrating and resonating after that sound ceases, it distorts the next wave of music being played. It very literally changes the timbre of the original sounds recorded. And nearly all speakers continue to resonate after the initial sound has ceased.
Theoretical Physicist John Wheeler said, "Time is what prevents everything from happening at once.” And THAT is what the ULTIMATE speaker accomplishes. It prevents everything from happening at once. It PURIFIES the music by STOPPING the sounds that should have stopped resonating after they were played. The ULTIMATE DIMENSION for measuring sound is REAL-TIME SOUND.