The transducer was driven with an eight-cycle tone burst at source pressures up to 0.137 MPa.
Simulated Lamb wave signals were generated by means of a 5 cycles tone burst signals with different frequency values.
Tumors were exposed to 16 cycles tone burst of 500 kHz frequency with 3 kHz pulse repetition frequency for 5 minutes, resulting in 750 ms of exposure for an overall duty cycle of 0.25%.
Moreover, two reference signals generated as two and sixteen cycle sine tone bursts were examined.
Two studies dealing with this problem have shown that the frequency change just detectable is about four cycles for a tone of 50 hertz and increases regularly, slowly at first, then more rapidly as the frequency is raised.
(He is to offer more Dvorak, as well as selections from Smetana's cycle of nationalistic tone poems, "Ma Vlast," tonight).
As he moved from one song to the next, he referred a couple of times to something called "The Scrimshaw Pieces," and it emerged that he had already imagined all of these as a cycle of songs — "tone poems," he called them.
In the improvised section, Khan and the musicians bounced material around, dividing metrical cycles into ever more sophisticated variations of rhythm and tone.
A two-cycle 1.0 MHz tone burst generated by a function generator (Stanford Research Systems DS345) and sent through a power amplifier (ENI 350L) and impedance matching box was used to drive the transducer.
On day 1, mice were exposed to 30 tones (82 dB, 2 kHz, 30 s on/off cycle) followed by 3 tone-footshock pairings (0.5 mA for 1 s).
Just as the image of a lost loved one stimulates parts of the brain associated with loss, the content of dreams early in the sleep cycle could set the tone for that night's dream experiences.
