For example, if light A looks more red than light B and B looks more red than C, then one can trust that A will look more red than C. The same applies in tone hearing: If tone A sounds lower than tone B, and B sounds lower than C, then A will sound lower than C.
If the fretted note sounds lower than the harmonic, then the length of the string should be shortened.
Many vocalists intentionally use this technique to increase volume during amplification and to make their tone sound lower than it actually is, but this technique is also widely frowned upon by the death metal community as being a false enhancement technique.
She asked for clarity on the number of children likely to be transferred from France, adding that "it sounds considerably lower than the numbers he and I have discussed".
The authors wrote that Noc was even able to be trained to "speak" on cue [PDF] and they were able to study how he adjusted the pressure and "phonic lips" in his nasal cavities to make sounds much lower than ordinary whale squeals and clicks.
Although it is not possible to establish a definite correspondence between model sound intensities and physical sound levels, we can speculate that model intensity below 20 may roughly correspond to physical sound levels lower than or equal to 60 dB, and model sound intensity above 20 may correspond to physical sound levels above 65and6666 dB.
Killer whales, for instance, are known to swim away from areas where they have encountered sonar signals of about 142 decibels, a sound level lower than currently allowed by the U.S. Navy for its ships, Tyack said, referring to a 2014 study in The Journal of the Acoustical Society of America that determined the mammals' likely response.
Infrasound, or sound frequency lower than 20 Hz inaudible to the human ear has been associated in some studies with symptoms including fatigue, sleeplessness, and irritability, as well as with changes to the physiology of the inner ear that have poorly understood implications.
Keep in mind that the tenor sax sounds an octave lower than written, which is why it sounds so low even though a lot of its notes are written above the staff.
Likewise, a stop that sounds an octave lower than unison pitch is at 16′ pitch, and one that sounds two octaves lower is at 32′ pitch.
In acoustics, the term GRF usually refers to sounds of frequencies lower than approximately 300 Hz (Ekimov and Sabatier 2006).
