dröhnen
to drone
To produce a loud, deep, vibrating sound that fills a room or environment.
Die Bässe aus der Musikanlage dröhnten durch das ganze Haus.
The bass from the sound system droned through the whole house.

to drone / to throb
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to drone
To produce a loud, deep, vibrating sound that fills a room or environment.
Die Bässe aus der Musikanlage dröhnten durch das ganze Haus.
The bass from the sound system droned through the whole house.

When 'dröhnen' (to throb) describes a sensation in the head or ears, a dative construction is used. The person who has the sensation is in the dative, and the body part is the subject.
Von der lauten Musik dröhnen mir die Ohren.
My ears are throbbing from the loud music.
You can easily distinguish the two meanings: If the subject is a source of noise, such as 'Musik' (music) or 'Motoren' (engines), it is about a sound. If the subject is a body part, such as 'der Kopf' (the head), and a person is in the dative ('mir' = to me/for me), it is about a sensation.
Die Lautsprecher auf dem Festival dröhnten bis in die Nacht.
The speakers at the festival droned late into the night.
Typical subjects for 'dröhnen' (to drone) are things that produce deep, loud, and often vibrating sounds. These include 'Bässe' (bass), 'Musik' (music), 'Motoren' (engines), 'Maschinen' (machines), or 'Lautsprecher' (speakers).
Im Keller dröhnte der Heizkessel.
The boiler was droning in the basement.
to cry / howl
'heulen' and 'dröhnen' can both describe loud sounds, especially with wind, engines, or machines. The difference lies in the sound quality. 'heulen' is more high-pitched, long, and sometimes plaintive. 'dröhnen' is deep, dull, and often so strong that you feel it in the room or in your body. You can confuse them when something is simply very loud. Ask yourself: if it sounds high and long, it 'heult'; if it sounds deep and vibrating, it 'dröhnt'.

Nach dem Konzert dröhnte mir der Kopf von der lauten Musik.
After the concert, my head was pounding from the loud music.
In der Werkstatt heult die Säge, sobald Herr Schneider sie einschaltet.
In the workshop, the saw howls as soon as Mr. Schneider switches it on.