Screech is a harsh high pitched scream which is related to anger.
Bleep - Granerica
High pitched
if he's kind of shy... has a low tone... or kind of high pitched like he's nervous
A high-pitched shout is often referred to as a shriek or a scream. It is a loud vocalization with a piercing tone that typically conveys a sense of urgency, fear, or excitement.
No, "whined" is a verb. It describes the action of expressing discontent or discomfort in a high-pitched, complaining tone.
where is the humming noise coming from? if it's coming thru the speakers and matches the rev tone of the engine, then you have a bad ground in your stereo.
Tinnitus
This is an attention-getting bark. A Yorkie will bark with a high tone when trying to communicate a need, such as wanting to go outside or wanting to play.
a low pitched sound or tone
You seem to be describing Tinnitus. Seek the help of a physician as it may be treatable in its early stages.
King Julien from the "Madagascar" movies has a French accent. It is a stereotypical French accent with a high-pitched and flamboyant tone.