True or False: The frequency, amplitude and timber of a single auditory stream tend to change rapidly during a short period of time.

If a sound is play at one frequency and another one played at the opposite frequency, what happens to the sounds?

Dealing with speech- what challenge do people experience when two people say the same word but sounds different?

Please help me.

You REALLY need to post each question separately AND indicate what YOU THINK about each one.

What have you tried?
Where do you get stuck?
What don't you understand?
(etc.)