Noise reduction via tuned acoustic echo cancellation
View Patent ↗An embodiment provides a method, including: accessing a tuned corrective mask stored in a memory device; forming, using a processor, a tuned acoustic echo cancellation mask utilizing the tuned-corrective mask; applying, using a processor, the tuned acoustic echo cancellation mask to a digital audio signal; and outputting an echo-cancelled audio signal. Other aspects are described and claimed.
1. A method, comprising:
accessing a tuned corrective mask that has been tuned using output characteristics of a speaker and thereafter stored in a memory device;
forming, using a processor, a tuned acoustic echo cancellation mask for a specified speaker being different from the speaker, utilizing the tuned corrective mask that has been tuned for the speaker;
applying, using a processor, the tuned acoustic echo cancellation mask to a digital audio signal; and
outputting an echo-cancelled audio signal.
2. The method of claim 1 , wherein the tuned corrective mask tunes frequency characteristics of the tuned acoustic echo cancellation mask.
3. The method of claim 2 , wherein the processor applies the tuned corrective mask in the frequency domain.
4. The method of claim 3 , wherein the processor transforms the tuned acoustic echo cancellation mask to the time domain prior to applying the tuned acoustic echo cancellation mask to the digital audio signal.
5. The method of claim 1 , further comprising forming a tuned corrective mask for an information handling device.
6. The method of claim 5 , wherein forming a tuned corrective mask for an information handling device comprises analyzing speaker distortion characteristics of the information handling device.
7. The method of claim 6 , wherein the forming a tuned corrective mask comprises forming the tuned corrective mask for a speaker output signal of an information handling device.
8. The method of claim 7 , wherein the applying a tuned acoustic echo cancellation mask to a digital audio signal comprises applying the tuned acoustic echo cancellation mask to a digital audio signal captured by a microphone of the information handling device.
9. The method of claim 1 , wherein the memory device comprises an on-chip memory of a digital signal processing audio sub component of an information handling device.
10. The method of claim 1 , wherein more than one tuned acoustic echo cancellation mask is stored and an appropriate tuned acoustic echo cancellation mask is selected based on a particular device component being utilized.
11. The method of claim 1 , wherein one or more tuned acoustic echo cancellation masks are stored and applied based on user activity.
12. An information handling device, comprising:
one or more processors; and
a memory device storing instructions executable by the one or more processors to:
access a tuned corrective mask that has been tuned using output characteristics of a speaker and thereafter stored in a memory device;
form a tuned acoustic echo cancellation mask for a specified speaker being different from the speaker, utilizing the tuned corrective mask that has been tuned for the speaker apply the tuned acoustic echo cancellation mask to a digital audio signal; and
output an echo-cancelled audio signal.
13. The information handling device of claim 12 , wherein the tuned corrective mask tunes frequency characteristics of the tuned acoustic echo cancellation mask.
14. The information handling device of claim 12 , wherein the one or more processors apply the tuned corrective mask in the frequency domain.
15. The information handling device of claim 14 , wherein the one or more processors transform the tuned acoustic echo cancellation mask to the time domain prior to applying the tuned acoustic echo cancellation mask to the digital audio signal.
16. The information handling device of claim 15 , wherein to form a tuned corrective mask for the information handling device comprises analyzing speaker distortion characteristics of the information handling device.
17. The information handling device of claim 16 , wherein to apply a tuned acoustic echo cancellation mask to a digital audio signal comprises applying the tuned acoustic echo cancellation mask to a digital audio signal captured by a microphone of the information handling device.
18. The information handling device of claim 12 , wherein the program code further comprises code to form a tuned corrective mask for the information handling device.
19. The information handling device of claim 12 , wherein to form a tuned corrective mask comprises forming the tuned corrective mask for a speaker output signal of the information handling device.
20. A program product, comprising:
a storage device having computer program code embodied therewith, the computer program code being executable by a processor and comprising:
computer program code for accessing a tuned corrective mask that has been tuned using output characteristics of a speaker and thereafter stored in a memory device;
computer program code for forming a tuned acoustic echo cancellation mask for a specified speaker being different from the speaker, utilizing the tuned corrective mask that has been tuned for the speaker;
computer program code for applying the tuned acoustic echo cancellation mask to a digital audio signal; and
computer program code for outputting an echo-cancelled audio signal.