Background sound removal for privacy and personalization use
A system for background sound removal, the system may include: a noise reduction circuit arranged to apply a background sound reduction process on multiple samples of background sound and speech to provide first signals that comprise residual background sound; a background cancellation circuit arranged to remove the residual background sound from the first signals to provide second signals; and an output circuit arranged to output a mixture of the second signals and at least zero selected signals to a sound generating circuit that is arranged to output audio signals representative of the mixture.
1. A system for background sound removal, the system comprises:
a noise reduction circuit arranged to apply a background sound reduction process on multiple samples of background sound and speech to provide first signals that comprise residual background sound;
a background cancellation circuit arranged to remove the residual background sound from the first signals to provide second signals; and
an output circuit arranged to output a mixture of the second signals and at least zero selected signals to a sound generating circuit that is arranged to output audio signals representative of the mixture.
2. The system according to claim 1 , wherein the output circuit is arranged to output only the second signals to the sound generating circuit.
3. The system according to claim 1 , wherein the output signals is arranged to output a mixture of the second signals and selected signals that are represent selected background sounds.
4. The system according to claim 1 , wherein the background cancellation circuit comprises a speech extractor circuit that is followed by a speech synthesis circuit.
5. The system according to claim 1 , comprising a selection circuit arranged to select the selected signals out of multiple signals representing different desired background sounds.
6. The system according to claim 1 , comprising a selection circuit arranged to select the selected signals out of at least one set of signals representing a desired background sound and the background sound.
7. The system according to claim 1 , wherein the selecting circuit and the sound generating circuit belong to a same communication device.
8. The system according to claim 1 , wherein the selecting circuit and the sound generating circuit belong to different components of a same communication device.
9. The system according to claim 1 , wherein the sound generating circuit belongs to a phone while the selection circuit belongs to a headset that is arranged to communicate with the phone.
10. The system according to claim 1 wherein the noise reduction circuit is arranged to receive the multiple samples from a plurality of microphones.
11. The system according to claim 1 comprising the sound generating circuit.
12. A method for background sound removal, the method comprises:
applying, by a noise reduction circuit, a background sound reduction process on multiple samples of background sound and speech to provide first signals that comprise residual background sound;
removing, by a background cancellation circuit, the residual background sound from the first signals to provide second signals; and
outputting, by an output circuit, a mixture of the second signals and at least zero selected signals to a sound generating circuit that is arranged to output audio signals representative of the mixture.
13. A non-transitory computer readable medium that stores instructions for:
applying a background sound reduction process on multiple samples of background sound and speech to provide first signals that comprise residual background sound;
removing the residual background sound from the first signals to provide second signals; and
outputting a mixture of the second signals and at least zero selected signals to a sound generating circuit that is arranged to output audio signals representative of the mixture.
14. A system for background sound removal, the system comprises:
a processor arranged to remove background sound from multiple samples from multiple microphones to provide background sound removed signals;
a memory arranged to store multiple samples of desired background sounds;
an interface coupled between the processor and a sound generating circuit;
wherein the processor is further adapted to: 3 determine whether to send to the sound generating circuit (a) only the background removed signals; or (b) a mixture of the background removed signals and samples representative of a desired background sound; and
provide to the sound generating circuit, via the interface, signals in response to the determination.
15. The system according to claim 14 wherein the processor comprises a noise reduction circuit arranged to apply a background sound reduction process on the multiple samples of background sound and speech to provide first signals that comprise residual background sound; and a background cancellation circuit arranged to remove the residual background sound from the first signals to provide second signals.
16. The system according to claim 15 , wherein the background cancellation circuit comprises a speech extractor circuit that is followed by a speech synthesis circuit.
17. The system according to claim 14 , wherein the processor is arranged to select the selected signals out of multiple signals representing different desired background sounds.
18. The system according to claim 14 , wherein the processor is arranged to select the selected signals out of at least one set of signals representing a desired background sound and the background sound.
19. The system according to claim 14 , wherein the selecting circuit and the sound generating circuit belong to a same communication device.
20. The system according to claim 14 , wherein the selecting circuit and the sound generating circuit belong to different components of a same communication device.
21. The system according to claim 14 , wherein the sound generating circuit belongs to a phone while the selection circuit belongs to a headset that is arranged to communicate with the phone.