Instruction: Answer the given question using the supporting document.

Input:
Question: How are they at cancelling ambient noise without extra ambient on?  i.e. to sleep in?
Document: Another great feature is that the cord is detachable, so if you want to sleep in the headphones, this is very doable.So at this point I am completely satisfied with the Pyle headphones. The ear cups are comfortable and deep enough that I can wear earplugs inside them for an extra layer of noise canceling if there are screaming babies on the airplane or loud talkers in the book store/library.
This is my first unfavorable review for any product and I really regret having to write it. I really like these headphones; for the price, they sound amazing, are extremely comfortable, and block out ambient noise to a fair extent (not the best noise-cancelling, but better than nothing).
I then found that if you put the side with the noise input sensor against something there was EXTREMELY loud feedback. I found this out the hard way when I fell asleep and my head ended up against the pillow.....None of the above problems were evident with the headphones I had previously borrowed and used on flights. Also I have never experienced these problems with the airline supplied noise cancelling headphones used with the in-flight entertainment systems.Pay the little extra and buy a good quality name brand!
I really like my new Pyle high-fidelity noise-cancelling headphones. Now I can study my online classes without being distracted by my kids playing in the next room! YAY! I like the carrying case, too - it really helps prevent smashing them in my tote bag.
I do have to say that because they completely cover the ears (I feature that I was looking for) they do tend to make you a bit hot which is not a big problem in a cold computer room but might be something to consider if you would be wearing them in a warm environment.I love the fact that the audio cable can be disconnected form the headset, this allow me to wear them only for the noise cancelling feature, without the cable being in the way.
All I can say is WOW!!! The lawn mower sounded like it was somebody using one three blocks away. It was audible, but barely. The music was very clear! I also enjoy the bass these headphones produce. I always have the noise cancelling on because it works like a sound and bass boost, but they are usable without it if you don't have noises you want to get rid of and don't want to max out the bass.
My main objective was noise cancelling without going for $300 Bose. So i will describe this headphones mainly from this perspective. here is my summary:(1) Noise cancelling 6/10(2) Comfort 9/10(2) Sound Quality 8/10(4) Built 5/10It is 4 stars review for the good sound and comfort while small price and mild noise cancelling. ** I have tried Bose and I oweAudio Technica ATH-ANC7B Active Noise-Cancelling Closed-Back Headphones.
Use it every day in the gym. Keeps the extra noise out, and I can enjoy the Tele.Will use it today
my husband and I used these on a long flight and they were comfortable and did block a lot of ambient noise.
I use these to listen to my audio files while removing ambient noise and it works great for that function for me.
Answer: Bad...