Audio signal processing method and electronic device for supporting the same

Patent metadata

Field	Value
Publication number	US-10237651-B2
Application number	US-201615235639-A
Country	US
Kind code	B2
Filing date	Aug 12, 2016
Priority date	Aug 12, 2015
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

Abstract

An audio processing method and an electronic device for supporting the same are provided. The audio signal processing method includes checking property information of an audio signal in response to a request for playing the audio signal; processing, when property information fulfills a first condition, the audio signal using the first method and, when the property information fulfills a second condition, the audio signal using the second method; and outputting the audio signal processed using one of the first and second methods through a speaker.

First claim

What is claimed is:

1. An electronic device, comprising:
a memory for storing a first audio signal process and a second audio signal process for processing an audio signal; and
a processor functionally connected to the memory,
wherein the processor performs the first audio signal process by applying predetermined audio parameters to the audio signal to be output through a speaker in response to a request to play the audio signal, checks property information of the audio signal, performs the second audio signal process to the audio signal processed by the first audio signal process when the property information fulfills one of a first condition and a second condition, the second audio signal process comprises a first process and a second process, and outputs the audio signal processed using the second audio signal process through the speaker,
wherein the processor processes, when the checked property information fulfills the first condition, the audio signal using the first process, and processes, when the property information fulfills the second condition, the audio signal using the second process,
wherein the first audio signal process optimizes at least one audio parameter value at each volume level of a plurality of volume levels based on the audio signal, and
wherein the first audio signal process applies an excessive volume gain to the audio signal at a maximum volume level and applies excessive compression to the audio signal for protection against audio signal saturation.

2. The electronic device of claim 1 , wherein the property information of the audio signal comprises volume level information, audio channel information, audio quality information, and audio type information.

3. The electronic device of claim 2 , wherein the first and second processes process the audio signal using audio parameters and volume gain corresponding to the first and second conditions.

4. The electronic device of claim 3 , wherein:
the memory stores an audio parameter table that maps the property information of the audio signal to the audio parameters, and
the processor determines the audio parameters corresponding to the conditions of the property information by referencing the audio parameter table and applies the audio parameters to the audio signal.

5. The electronic device of claim 4 , wherein:
the audio parameters comprise a digital gain, a filter, and an auto gain control (AGC), and
the audio parameter table comprises different digital gain, filter, and AGC values for each of the first and second conditions of the property information.

6. The electronic device of claim 4 , wherein:
the memory stores a volume gain table that maps the property information of the audio signal to the volume gain, and
the processor determines the volume gain corresponding to each of the first and second conditions of the property information by referencing the volume gain table stored in the memory and applies the volume gain to the audio signal to which the audio parameters apply.

7. The electronic device of claim 2 , further comprising a microphone for collecting external audio, and
wherein the processor analyzes a level of the external audio collected by the microphone.

8. The electronic device of claim 7 , wherein the memory stores an external audio level table which maps the level of the external audio to an audio volume level.

9. The electronic device of claim 8 , wherein the processor adjusts the volume level of the property information to the audio volume level corresponding to the level of the external audio by referencing the external audio level table stored in the memory.

10. An audio signal processing method, comprising:
performing a first audio signal process by applying predetermined audio parameters to an audio signal to be output through a speaker in response to a request to play the audio signal;
checking property information of the audio signal;
performing a second audio signal process to the audio signal processed by the first audio signal process when the property information fulfills one of a first condition and a second condition, the second audio signal process comprises a first process and a second process; and
outputting the audio signal processed using one of the first and second processes through the speaker,
wherein performing the second audio signal process comprises:
processing, when the checked property information fulfills the first condition, the audio signal using the first process; and
processing, when the property information fulfills the second condition, the audio signal using the second process,

wherein the first audio signal process optimizes at least one audio parameter value at each volume level of a plurality of volume levels based on the audio signal, and
wherein the first audio signal process applies an excessive volume gain to the audio signal at a maximum volume level and applies excessive compression to the audio signal for protection against audio signal saturation.

11. The audio signal processing method of claim 10 , wherein:
the property information of the audio signal comprises volume level information, audio channel information, audio quality information, and audio type information, and
the first process processes the audio signal using audio parameters and volume gain corresponding to the first condition of the property information, and the second process processes the audio signal using the audio parameters and volume gain corresponding to the second condition of the property information.

12. The audio signal processing method of claim 11 , wherein checking the property information comprises determining the audio parameters corresponding to each of the first and second conditions of the property information by referencing an audio parameter table that maps the property information to the audio parameters.

13. The audio signal processing method of claim 12 , wherein the audio parameters comprise a digital gain, a filter, and an auto gain control (AGC).

14. The audio signal processing method of claim 13 , wherein the audio parameter table comprises different digital gain, filter, and AGC values for each of the first and second conditions of the property information.

15. The audio signal processing method of claim 12 , wherein determining the audio parameters comprises determining the volume gain corresponding to each of the first and second conditions of the property information by referencing the volume gain table which maps the property information of the audio signal to the volume gain.

16. The audio signal processing method of claim 11 , further comprising analyzing a level of external audio before checking the property information of the audio signal.

17. The audio signal processing method of claim 16 , wherein:
checking the property information of the audio signal comprises determining an audio volume level corresponding to the external audio volume level by referencing an extra audio level table that maps the external audio level to the audio volume level, and
determining the volume level comprises adjusting the audio volume level of the property information to the audio volume level corresponding to the external audio level.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Son Beakkwon
• Kim Gangyoul
• Kim Yangsu
• Choi Chulmin
• Park Jinwoo
• Yoon Gunhyuk
• Lee Namil
• Lee Yonghoon
• Jang Keunwon
• Heo Seungyoon

Classifications

• H04R29/001

  for loudspeakers (H04R29/007 takes precedence) · CPC title

• G10L19/167

  Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes · CPC title

• H04R3/04 Primary

  for correcting frequency response · CPC title

• H03G5/165

  Equalizers; Volume or gain control in limited frequency bands · CPC title

• H03G3/32 Primary

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