Semitone
a high pitch
A pitch indicator is called a metronome tuner.
Two notes that sound the same in pitch but have different names are 'enharmonically equivalent'. E.g. F# and Gb sound the same but they are written differently.
All drums can change pitch, but you're most likely thinking of Timpani, or Kettle Drums.
To change the pitch on an Alto Saxophone push and pull the mouthpiece on/off the cork. To make your pitch less flat push on and to make your pitch less sharp pull off. (Make sure you are using cork grease on your cork so that you are not damaging the mouthpiece, cork, and neck.) You can also try changing the pitch, put less pressure on your lips to make the pitch drop, and vice versa.
Inflection
Ummm . . . the change of pitch is called a modulation. Perhaps that is what you are asking. Or . . . a higher-pitched harmony in singing is called a Descant.
Do you mean "The Doppler Effect"?
Elevators change the pitch of the aircraft.
The change in pitch you hear as the ambulance passes by is called the Doppler effect. This phenomenon occurs because the sound waves are compressed as the ambulance approaches and stretched as it moves away, resulting in a higher pitch as it comes closer and a lower pitch as it moves away.
The apparent change in pitch of a moving sound source is called the Doppler effect. It describes how the frequency of the sound waves perceived by an observer changes as the source of the waves moves relative to the observer.
Tremolo is a rapid quivering change of volume. This is not to be confused with a small, rapid changes in pitch, which is known as vibrato.
Valves. They're used to change the pitch.
change (evolution, modification) is spelled "change" in French. change (small coins) is called "la monnaie"
As the frequency of a sound wave changes, the pitch of the sound will also change. Higher frequencies will result in higher-pitched sounds, while lower frequencies will produce lower-pitched sounds. This change in pitch is a result of the number of wave cycles per second altering the perception of the sound's frequency.
It is called "pitch."
The arm attached to the back rotor of a helicopter is called the "pitch change rod" or "pitch control rod." This component is crucial for adjusting the pitch of the rotor blades, allowing for control over the helicopter's lift and maneuverability. It connects the rotor hub to the swashplate, enabling the pilot to change the angle of the blades during flight.