`US Pat. No. 6,363,345
`
`Claims of the ‘345 Patent
`1. An apparatus for canceling noise,
`
`comprising:
`
`1a) an input for inputting an audio signal
`
`which includes a noise signal;
`
`1b) a frequency spectrum generator for
`
`generating the frequency spectrum of said
`
`audio signal thereby generating frequency
`
`bins of said audio signal; and
`
`1c) a threshold detector for setting a threshold
`
`for each frequency bin using a noise
`
`estimation process and for detecting for each
`
`frequency bin whether the magnitude of the
`
`frequency bin is less than the corresponding
`
`threshold, thereby detecting the position of
`
`noise elements for each frequency bin.
`
`2. The apparatus according to claim 1,
`
`wherein said threshold detector detects the
`
`position of a plurality of non-speech data
`
`points for said frequency bins.
`
`3. The apparatus according to claim 2,
`
`wherein said threshold detector detects the
`
`WAVES345_1003-0001
`
`Petitioner Waves Audio Ltd. 345 - Ex. 1003
`
`
`
`Claims of the ‘345 Patent
`position of said plurality of non-speech data
`
`points for said frequency bins within a
`
`continuous speech segment of said audio
`
`signal.
`
`12. The apparatus according to claim 1,
`
`further comprising an averaging unit for
`
`determining a level of said noise within said
`
`respective frequency bin, wherein said
`
`threshold detector detects the position of said
`
`noise elements where said level of said noise
`
`determined by said averaging unit is less than
`
`the corresponding threshold.
`
`13. The apparatus according to claim 1,
`
`further comprising a subtractor for
`
`subtracting said noise elements estimated at
`
`said positions determined by said threshold
`
`detector from said audio signal to derive said
`
`audio signal substantially without said noise.
`
`14. The apparatus according to claim 13,
`
`wherein said subtractor performs subtraction
`
`using a filter multiplication which multiplies
`
`said audio signal by a filter function.
`
`WAVES345_1003-0002
`
`Petitioner Waves Audio Ltd. 345 - Ex. 1003
`
`
`
`Claims of the ‘345 Patent
`17. The apparatus according to claim 13,
`
`further comprising a residual noise processor
`
`for reducing residual noise remaining after
`
`said subtractor subtracts said noise elements
`
`at said positions determined by said threshold
`
`detector from said audio signal.
`
`21. The apparatus according to claim 1,
`
`further comprising an estimator for
`
`estimating a magnitude of each frequency
`
`bin.
`
`23. The apparatus according to claim 21,
`
`further comprising a smoothing unit which
`
`smoothes the estimate of each frequency bin.
`
`25. The apparatus according to claim 1,
`
`further comprising an adaptive array
`
`comprising a plurality of microphones for
`
`receiving said audio signal.
`
`38. A method for driving a computer
`
`processor for generating a noise canceling
`
`signal for canceling noise from an audio
`
`signal representing audible sound including a
`
`WAVES345_1003-0003
`
`Petitioner Waves Audio Ltd. 345 - Ex. 1003
`
`
`
`Claims of the ‘345 Patent
`noise signal representing audible noise, said
`
`method comprising the steps of:
`
`38a) inputting said audio signal which
`
`includes said noise signal;
`
`38b) generating the frequency spectrum of
`
`said audio signal thereby generating
`
`frequency bins of said audio signal;
`
`38c) setting a threshold for each frequency
`
`bin using a noise estimation process;
`
`38d) detecting for each frequency bin
`
`whether the magnitude of the frequency bin is
`
`less than the corresponding threshold, thereby
`
`detecting the position of noise elements for
`
`each frequency bin; and
`
`38e) subtracting said noise elements detected
`
`in said step of detecting from said audio
`
`signal to produce an audio signal representing
`
`said audible sound substantially without said
`
`audible noise.
`
`47. The method according to claim 38,
`
`further comprising the step of reducing the
`
`residual noise remaining after said step of
`
`WAVES345_1003-0004
`
`Petitioner Waves Audio Ltd. 345 - Ex. 1003
`
`
`
`Claims of the ‘345 Patent
`subtracting subtracts said noise elements at
`
`said positions determined by said step of
`
`detecting from said audio signal
`
`
`
`WAVES345_1003-0005
`
`Petitioner Waves Audio Ltd. 345 - Ex. 1003
Accessing this document will incur an additional charge of $.
After purchase, you can access this document again without charge.
Accept $ Charge
Still Working On It
This document is taking longer than usual to download. This can happen if we need to contact the court directly to obtain the document and their servers are running slowly.
Give it another minute or two to complete, and then try the refresh button.
A few More Minutes ... Still Working
It can take up to 5 minutes for us to download a document if the court servers are running slowly.
Thank you for your continued patience.
This document could not be displayed.
We could not find this document within its docket. Please go back to the docket page and check the link. If that does not work, go back to the docket and refresh it to pull the newest information.
Your account does not support viewing this document.
You need a Paid Account to view this document. Click here to change your account type.
Your account does not support viewing this document.
Set your membership
status to view this document.
With a Docket Alarm membership, you'll
get a whole lot more, including:
- Up-to-date information for this case.
- Email alerts whenever there is an update.
- Full text search for other cases.
- Get email alerts whenever a new case matches your search.
One Moment Please
The filing “” is large (MB) and is being downloaded.
Please refresh this page in a few minutes to see if the filing has been downloaded. The filing will also be emailed to you when the download completes.
Your document is on its way!
If you do not receive the document in five minutes, contact support at support@docketalarm.com.
Sealed Document
We are unable to display this document, it may be under a court ordered seal.
If you have proper credentials to access the file, you may proceed directly to the court's system using your government issued username and password.
Access Government Site
