Filtering an audio signal for a non-real-time recipient

Patent metadata

Field	Value
Publication number	US-9565306-B2
Application number	US-201314085566-A
Country	US
Kind code	B2
Filing date	Nov 20, 2013
Priority date	Nov 20, 2013
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

For filtering an audio signal for a non-real-time recipient, a signal module may detect communication of an audio signal to the non-real-time recipient. A management module may filter the audio signal with a high-latency audio filter.

First claim

What is claimed is:

1. An apparatus comprising:
a processor;
a memory that stores code executable by the processor to:
detect communication of an audio signal to a first primary speaker
filter the audio signal with a speaker identification filter to preserve a first primary speaker audio signal;
detect a change from the first primary speaker to a second primary speaker from one or more of a change in relative amplitudes of the first primary speaker audio signal and a second primary speaker audio signal, a motion, and a specified change phrase; and
modify the speaker identification audio filter to a preserve the second primary speaker audio signal.

2. The apparatus of claim 1 , wherein the code is further executable by the processor to:
detect communication of the audio signal to a non-real-time recipient, wherein the non-real-time recipient is one of a voicemail account, a messaging system, a speech recognition system, and an automated phone menu; and
filter the audio signal with a high-latency audio filter in response to detecting the non-real-time recipient, wherein a combined latency of the high-latency audio filter and a path to the non-real-time recipient is less than a latency threshold.

3. The apparatus of claim 2 , wherein the speaker identification audio filter that preserves one or more primary speaker audio signals and removes other audio signals.

4. A method comprising:
detecting, by use of a processor, communication of an audio signal to a first primary speaker
filtering the audio signal with a speaker identification filter to preserve a first primary speaker audio signal;
detecting a change from the first primary speaker to a second primary speaker from one or more of a change in relative amplitudes of the first primary speaker audio signal and a second primary speaker audio signal, a motion, and a specified change phrase; and
modifying the speaker identification audio filter to a preserve the second primary speaker audio signal.

5. The method of claim 4 , wherein the method further comprises:
detecting communication of the audio signal to a non-real-time recipient, wherein the non-real-time recipient is one of a voicemail account, a messaging system, a speech recognition system, and an automated phone menu; and
filtering the audio signal with a high-latency audio filter in response to detecting the non-real-time recipient, wherein a combined latency of the high-latency audio filter and a path to the non-real-time recipient is less than a latency threshold.

6. The method of claim 5 , wherein the low-latency audio filter has a latency of less than 50 milliseconds.

7. The method of claim 5 , wherein the non-real-time recipient is detected from a specified automation phrase.

8. The method of claim 5 , wherein the speaker identification audio filter that preserves one or more primary speaker audio signals and removes other audio signals.

9. The method of claim 8 , wherein the one or more primary speaker audio signals are identified from one or more of phonemes, prosodic attributes, and frequency profiles.

10. The method of claim 5 , wherein the high-latency audio filter has a latency of greater than 200 milliseconds for a voicemail account, messaging system, and a speech recognition system.

11. The method of claim 5 , wherein the high-latency audio filter has a latency in the range of 50-200 milliseconds for an automated phone menu.

12. A program product comprising a non-transitory computer readable storage medium storing code executable by a processor to perform:
detecting communication of an audio signal to a first primary speaker
filtering the audio signal with a speaker identification filter to preserve a first primary speaker audio signal;
detecting a change from the first primary speaker to a second primary speaker from one or more of a change in relative amplitudes of the first primary speaker audio signal and a second primary speaker audio signal, a motion, and a specified change phrase; and
modifying the speaker identification audio filter to a preserve the second primary speaker audio signal.

13. The program product of claim 12 , wherein the processor further performs:
detecting communication of the audio signal to a non-real-time recipient, wherein the non-real-time recipient is one of a voicemail account, a messaging system, a speech recognition system, and an automated phone menu; and
filtering the audio signal with a high-latency audio filter in response to detecting the non-real-time recipient, wherein a combined latency of the high-latency audio filter and a path to the non-real-time recipient is less than a latency threshold.

Assignees

• Lenovo Singapore Pte Ltd
• Lenovo Singapore Pte Ltd

Inventors

• Zhang Jianbang
• Nicholson John Weldon

Classifications

• G10L17/00

  Speaker identification or verification techniques · CPC title

• G10L21/0272

  Voice signal separating · CPC title

• G10L21/00

  Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility (G10L19/00 takes precedence) · CPC title

• H04M2201/41

  using speaker recognition · CPC title

• H04W4/12 Primary

  Messaging; Mailboxes; Announcements · CPC title