Apparatus and method for automatic volume control with ambient noise compensation

Patent metadata

Field	Value
Publication number	US-11239810-B2
Application number	US-202017128616-A
Country	US
Kind code	B2
Filing date	Dec 21, 2020
Priority date	Dec 30, 2019
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

An electronic device and method that automatically adjusts an audio output volume level based on a live environmental acoustic scenario input via a microphone using a machine learning algorithm trained with Human Activity Recognition (HAR). Equipped with such an intelligence the electronic device classifies ambient sounds occurring in the environment of the listening area in which the device is situated into different acoustic scenario mappings such a voice or conversation, for an ambient human conversation detected event, and noise, such as for example a vacuum cleaner or dish washer noise detected event, and automatically adjust the audio output volume accordingly.

First claim

What we claim is:

1. An automatic volume control apparatus for automatically controlling an output volume of audio content, comprising:
a memory having stored therein a plurality of profiles, P x , where x is an integer 1 to n, n being greater than 1, ranging from a quietest profile P 1 to a loudest profile P n , associated with volume settings, respectively, and having stored therein, for each profile respectively, a decibel range and an upper sound limit value;
a microphone,
a processor configured to execute at least the following:
receiving a user volume setting, the user volume setting having an associated profile P y , which corresponds to one of the profiles P x , y=1 to n;
setting an output volume of the audio content to a volume setting having the profile P x corresponding to the profile P y indicated by the user volume setting;
receiving sound input from the microphone;
determining whether the sound input from the microphone has an intensity that exceeds the upper sound limit value of the profile P y indicated by the user volume setting;
if the processor determines that the sound input from the microphone exceeds the upper sound limit value of the profile indicated by the user volume setting, performing an analysis of the sound input from the microphone to determine whether the sound input from the microphone includes noise or an ambient voice;
if the processor determines that the sound input from the microphone includes noise or an ambient voice, changing the output volume of the audio content to a volume setting having a profile different from P y .

2. The automatic volume control apparatus according to claim 1 , wherein the processor is further configured to execute the following:
if the processor determines that the sound input from the microphone includes noise, raising the output volume of the audio content to a volume setting having a profile higher than P y .

3. The automatic volume control apparatus according to claim 1 , wherein the processor is further configured to execute the following:
if the processor has determined that the sound input from the microphone has an intensity that exceeds the upper sound limit value of the profile P y indicated by the user volume setting and that the sound input from the microphone includes noise, raising the output volume of the audio content to a volume setting having a profile P y+1 .

4. The automatic volume control apparatus according to claim 1 , wherein the processor is further configured to execute the following:
if the processor has determined that the sound input from the microphone has an intensity that exceeds the upper sound limit value of the profile P y indicated by the user volume setting and that the sound input from the microphone includes noise, raising the output volume of the audio content to a volume setting having a profile that has a decibel range that encompasses the intensity of the sound input from the microphone and an upper sound limit value that is greater than the intensity of the sound input from the microphone.

5. The automatic volume control apparatus according to claim 1 , wherein the processor is further configured to execute the following:
if the processor determines that the sound input from the microphone includes an ambient voice, lowering the output volume of the audio content to a volume setting having a profile lower than P y .

6. The automatic volume control apparatus according to claim 1 , wherein the processor is further configured to execute the following:
if the processor has determined that the sound input from the microphone has an intensity that exceeds the upper sound limit value of the profile P y indicated by the user volume setting and that the sound input from the microphone includes an ambient voice, lowering the output volume of the audio content to a volume setting having a profile P 1 .

7. The automatic volume control apparatus according to claim 1 , wherein the processor is further configured to execute the following:
if the processor has determined that the sound input from the microphone has an intensity that exceeds the upper sound limit value of the profile P y indicated by the user volume setting and that the sound input from the microphone includes an ambient voice, lowering the output volume of the audio content to a volume setting having a profile that has a decibel range that encompasses the intensity of the sound input from the microphone and that has an upper sound limit value that is greater than the intensity of the sound input from the microphone.

8. An automatic volume control method for automatically controlling an output volume of audio content, comprising:
storing in a memory a plurality of profiles, P x , where x is an integer 1 to n, n being greater than 1, ranging from a quietest profile P 1 to a loudest profile P n , associated with volume settings, respectively, and having stored therein, for each profile respectively, a decibel range and an upper sound limit value;
receiving a user volume setting, the user volume setting having an associated profile P y , which corresponds to one of the profiles P x , y=1 to n;
setting an output volume of the audio content to a volume setting having the profile P x corresponding to the profile P y indicated by the user volume setting;
receiving sound input from a microphone;
determining, with a processor, whether the sound input from the microphone has an intensity that exceeds the upper sound limit value of the profile P y indicated by the user volume setting;
if the processor determines that the sound input from the microphone exceeds the upper sound limit value of the profile indicated by the user volume setting, performing, with the processor, an analysis of the sound input from the microphone to determine whether the sound input from the microphone includes noise or an ambient voice;
if the processor determines that the sound input from the microphone includes noise or an ambient voice, automatically changing the output volume of the audio content to a volume setting having a profile different from P y .

9. The automatic volume control method according to claim 8 , further comprising:
if the processor determines that the sound input from the microphone includes noise, automatically raising the output volume of the audio content to a volume setting having a profile higher than P y .

10. The automatic volume control method according to claim 8 , further comprising:
if the processor has determined that the sound input from the microphone has an intensity that exceeds the upper sound limit value of the profile P y indicated by the user volume setting and that the sound input from the microphone includes noise, automatically raising the output volume of the audio content to a volume setting having a profile P y+1 .

11. The automatic volume control method according to claim 8 , further comprising:
if the processor has determined that the sound input from the microphone has an intensity that exceeds the upper sound limit value of the profile P y indicated by the user volume setting and that the sound input from the microphone includes noise, automatically raising the output volume of the audio content to a volume setting having a profile that has a decibel range that encompasses the intensity of the sound input from the microphone and that has an upper sound limit value that is greater than the intensity of the sound input from the microphone.

12. The automatic volume control method according to claim 8 , further comprising:
if the processor determines that the sound input from the microphone includes an ambient voice, automatically lowering the output volume of the

Assignees

• Arris Entpr Llc

Inventors

• Mahadeva Swaroop
• Ksheerasagar Chandra Shekar
• Poral Jeethendra

Classifications

• H03G7/007

  of digital or coded signals · CPC title

• H03G3/32 Primary

  the control being dependent upon ambient noise level or sound level · CPC title

• H03G3/3005 Primary

  in amplifiers suitable for low-frequencies, e.g. audio amplifiers (H03G3/32, H03G3/34 take precedence) · CPC title

• G10L21/0216

  characterised by the method used for estimating noise · CPC title

• H04R2430/01

  Aspects of volume control, not necessarily automatic, in sound systems · CPC title