It was a pulsing drone that came through the microphone in a weird cadence; a low, beating drone, like some wild music.
Suddenly, the outside microphone picked up a low, humming sound.
That flame that hit us burned off our outside microphone and speaker, and probably did a lot of damage to the ray projectors.
I went even further, then; for at night, when the whistling commenced, I made a microphone test.
Another extraordinary thing is that the microphone will not magnify the sound--will not even transmit it; seems to take no account of it, and acts as if it were nonexistent.
A microphone recessed in the outer wall brought them the fading whisper of air from outside.
It seemed some monstrous black bat flying there against the sky, but down to the sensitive microphone on the side of the Solarite came the drone of the hundred mighty propellers as the great plane forged swiftly along.
There was a flash of indescribable brilliance that momentarily blinded the watching Terrestrians; then there came to the microphone such waves of sound as it could not reproduce.
The microphone was shut off while the Solarite shot swiftly forward toward the source of the sound.
Only the tiny earphone and the throatmicrophone revealed its true nature.
He slipped the phone into his ear, fitted the microphone against his throat, then picked up the piece of plastic tubing that was red on one end and green on the other.
He picked up themicrophone and called the Radiant Hope on Phobos.
On the control deck of the Radiant Hope, Jonner gripped a microphone and shouted profane instructions at the pilot of a squat ground-to-space rocket twenty miles away.
Only static filled the control deck of the Space Lance as Tom clutched the microphone and pleaded desperately for Quent Miles to answer him.
The Solar Guard officer snapped off the microphone and turned to Tom, Roger, and Astro.
The young cadet slammed themicrophone down on the table.
After greeting Tom with enthusiasm that matched Astro's, Kit and Sid stood to one side quietly and listened while Tom gave his preliminary report to the major who held a recorder microphone in front of him.
But by using a microphone it is an easy matter to hear the sounds which allow of opening the lock.
He has found that it is possible to receive wireless signals, although ordinary records are not loud enough, by using a small microphone on the repeating diaphragm and connected with a loud- speaking telephone.
The chief difficulty was to get a microphone that would carry a sufficient current without burning up.
The microphone is now used by burglars for picking combination locks.
But for some reason the business with the microphone and the speaker in the next room kept lingering in his mind.
By means of a microphone placed in the tank, he made exact recordings of Smiley's "talk.
Deep in thought, Tom idly fingered a microphoneon his workbench.
It consisted of two slender rods, which conveyed the mechanical vibrations to both ears, and is quite different from the electrical microphone of Professor Hughes.
The discovery of the microphone by Professor Hughes has enabled us to understand the reason of this failure.
There was no place where a microphone could have been concealed.
There could very well be a microphonehidden in this room.
Please do," I said, and as soon as he was gone I turned to the microphone and called the sentry on duty at the exit.
He walked to the picture of Hitler and connected the microphone again.
Flipping a picture of Hitler aside, he exposed the microphonein the wall.
When a microphone picked up a hostile gun explosion the disturbance was instantly transmitted through several miles of wire.
The impulses received by the microphone in this equipment were recorded on a running tape smoked by an acetylene flame.
Each microphoneon outpost duty was represented on this tape by a parallel line; and, as six microphones were usually used, the tape was striped with six parallel lines.
Joe swung a microphone into place before his mouth.
Mike spoke curtly into themicrophone broadcasting to ground.
Lurton Zimbardo shut off the microphone in the control center of the asteroid.
He rolled over onto the side on which he slept, the microphonestill in his hand.
After a time he reached for the microphone beside the bed and began a supplemental Log entry, which doubled as his personal diary.
I turned from the microphone to find that Barry had just entered the navigating room.
That meant that their outer patrols might be seeking our business, and I touched Barry's attention button, and spoke into the microphone beside my bunk.
Seconds later Colonel Meadows returned to the microphone and held up his hand until the confusion died down.
You'll be talking into a microphone in the same tone you use for a broadcast.
Now then, as you also know the wire telephone works by a metal disc in the receiver, vibrating in exactly the same way as does the microphone in the transmitter.
According to the vibrations of the voice of the person sending the spoken message, the electric current along the wire, acted upon by the microphone in the transmitter, increases or decreases.
He picked up the microphone hanging above and behind him and began to speak coldly into it.
Begin by connecting the leading-in wire with one of the terminals of the microphone transmitter, as shown in the wiring diagram Fig.
The difference between the wireless telegraph and the wireless telephone is that the former transmits messages by means of a telegraph key, and the latter transmits conversation and music by means of a microphone transmitter.
Where an induction coil or a microphone transformer is used they are shunted around a condenser, but this is not necessary with the magnetic modulator.
All of these parts have been described, as said above, in Chapter XVI, except the microphone modulators.
The microphone can be connected in the ground wire and the ammeter in the aerial wire and the results will be practically the same.
Where a microphone modulator of the induction coil or microphone transformer type is connected in the grid circuit or aerial wire system the modulation is not very effective, but by using a second tube as a modulator, as shown in Fig.
As you speak into the microphone transmitter its resistance is varied and the current strength of the oscillations is varied accordingly.
The best kind of a microphoneto use with this and other telephone transmitting sets is a Western Electric No.
Any other goodmicrophone transmitter can be used if desired.
One of the ends of the secondary of the induction coil, or the microphone transformer, or the magnetic modulator is connected to the grid circuit and the other end to clip 3 of the tuning coil.
A device used for controlling radio frequency currents either by means of a telegraph key or a microphone transmitter.
Tensely he watched the red hand crawl up the face of the chronometer and he gripped the intercom microphone tightly.
Connel took the small needlelike microphone in his hand and spoke into it as the reel of sound tape unwound slowly.
Tom snapped on the machine and brought the microphone over to Barret, holding it in front of his trembling mouth.
He grabbed the teleceiver microphoneand called into it rapidly.
Holding the microphone close to the young engineer's mouth, Connel said, "Tell us everything you know of this incident.
My small microphone was located between my collar bones, where the front edge of my toga just concealed it.
The microphone gave me more trouble than any other part of the set, as carbon of the exact sort required seemed hard to get on Poros.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "microphone" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: beacon; bug; phone; radiator; transmitter
