In real time mode, with or without an associated heterodyne or FD detector, the slowed down calls can be heard as a drawn-out bat call at audible frequencies.
22.
The high frequency response means that the low midband distortion level is maintained to the top of the audible frequency band, which is generally not the case with moving coil drivers.
23.
Sometimes sound waves at ultrasonic frequencies can be used to levitate objects, thus creating no sound heard by the human ear, such as was demonstrated at Otsuka Lab, while others use audible frequencies.
24.
A distinctive feature of this approach is that the audible frequency band is divided into three so that a distinct procedure of 3D sound localization can be exploited for each of the three subbands.
25.
A hodgepodge of all audible frequencies of sound, or " white noise, " is recorded using an artificial head that has plastic pinnae and a microphone in each of its inner " ears ."
26.
Where high fidelity reproduction of sound is required, multiple loudspeaker transducers are often mounted in the same enclosure, each reproducing a part of the audible frequency range " ( picture at right ) ".
27.
While the term is sometimes used interchangeably with the term " loudspeaker " ( " speaker " ), it is usually applied to specialized transducers which reproduce only a portion of the audible frequency range.
28.
A good measure of the'power'of a system is therefore a plot of maximum loudness before clipping of the amplifier and loudspeaker combined, in dB SPL, at the listening position intended, over the audible frequency spectrum.
29.
Construction of this transformer is critical as it must provide a constant ( often high ) transformation ratio over the entire audible frequency range ( i . e . large bandwidth ) and so avoid distortion.
30.
If the motion of the toothbrush is sufficiently rapid to produce a hum in the audible frequency of human range ( 20 Hz to 20, 000 Hz ), it can be classified as a sonic toothbrush.
