50
Need noise cancelling headphones recommendations
(lemmy.world)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 04 Jun 2024
50 points (100.0% liked)
Autism
6935 readers
26 users here now
A community for respectful discussion and memes related to autism acceptance. All neurotypes are welcome.
We have created our own instance! Visit Autism Place the following community for more info.
Community:
Values
- Acceptance
- Openness
- Understanding
- Equality
- Reciprocity
- Mutuality
- Love
Rules
- No abusive, derogatory, or offensive post/comments e.g: racism, sexism, religious hatred, homophobia, gatekeeping, trolling.
- Posts must be related to autism, off-topic discussions happen in the matrix chat.
- Your posts must include a text body. It doesn't have to be long, it just needs to be descriptive.
- Do not request donations.
- Be respectful in discussions.
- Do not post misinformation.
- Mark NSFW content accordingly.
- Do not promote Autism Speaks.
- General Lemmy World rules.
Encouraged
- Open acceptance of all autism levels as a respectable neurotype.
- Funny memes.
- Respectful venting.
- Describe posts of pictures/memes using text in the body for our visually impaired users.
- Welcoming and accepting attitudes.
- Questions regarding autism.
- Questions on confusing situations.
- Seeking and sharing support.
- Engagement in our community's values.
- Expressing a difference of opinion without directly insulting another user.
- Please report questionable posts and let the mods deal with it. Chat Room
- We have a chat room! Want to engage in dialogue? Come join us at the community's Matrix Chat.
.
Helpful Resources
- Are you seeking education, support groups, and more? Take a look at our list of helpful resources.
founded 2 years ago
MODERATORS
That's the theory, but it's almost impossible to do in practice. Your microphone and speaker are imperfect at capturing and reproducing sounds. The phase timing is incredibly sensitive. You only have milliseconds to do the processing and generation.
That's why practical noise cancelling relies on feedback loops. A second microphone inside captures the result of the cancellation, and based on that adjustments can be made to the negative signal. This allows you to correct for lots of sources of error and achieve quite a good result. Of course, for a sudden noise like a gunshot, by the time the feedback loop can really kick in, the noise is already over.
Oooooh that makes so much sense, I had been wondering why lifting the earcup slightly doesn't amplify the sound, but that explains it. Thank you for the clarification!