FS#7308 - Noise Cancelling

Attached to Project: Rockbox
Opened by Rod (rodwatt) - Thursday, 14 June 2007, 09:05 GMT
Last edited by Peter D'Hoye (petur) - Monday, 25 June 2007, 21:34 GMT
Task Type Feature Requests
Category Recording
Status Closed
Assigned To No-one
Operating System Iriver H100 series
Severity Low
Priority Normal
Reported Version Daily build (which?)
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No


Hi all

New to Rockbox so apologies if this has already been considered/discussed...

Thought it might be useful to implement a noise cancelling feature using the inbuilt mic (or line in mic come to think of it), negating the input and playing back with music or radio. Then I wouldn't need to spend a fortune on noise cancelling headphones which work the same way.

"Noise Cancelling" menu options might be "On/Off", "Input Source" and "Sensitivity" so you can adjust the level of noise that is cancelled - I've often thought if there was a bus blasting it's horn at me to get out of the way or a fire alarm going off I might not want these cancelled!

Many thanks

This task depends upon

Closed by  Bj√∂rn Stenberg (zagor)
Monday, 25 June 2007, 21:34 GMT
Reason for closing:  Rejected
Additional comments about closing:  Closing all feature requests.
Comment by MichaelGiacomelli (saratoga) - Wednesday, 20 June 2007, 23:12 GMT
Active noise cancellation generally requires you to measure the incident sound wave at the transducer. I don't think your idea would work.

Also, if you want noise isolation, you can get very good results using a <$30 pair of internal ear headphones.