英和和英

a sound instrument called control amplifier

a quantity that is controlled, called control variable

a technician who controls sound volume

remote control

regulate the musical pitch of

adjust the controls for tone and volume

the conductor of a band

a loudspeaker

a megaphone

a device for controlling something by remote

the vocal organs

someone who regulates the tone of organ pipes

a masterful speaker

a megaphone

the referee's whistle

the dial tone

a control panel

a record for a gramophone

a horn speaker

control

a gramophone

linear amplifier

the measurement of hearing

the dial of an instrument

gain control over

an apparatus for absorbing vibration

setting of control output

noise of an alarm clock

bring under collective control

a deadbeat controller