APPARATUS AND METHOD FOR IMPROVING VOICE QUALITY IN PORTABLE TERMINAL

• US 20110106530A1
• Filed: 10/20/2010
• Published: 05/05/2011
• Est. Priority Date: 10/29/2009
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Tae-Seon
• Application Number:
  US12/908,433
• Publication Number:
  US 20110106530A1
• Time in Patent Office: Days
• US Class Current: 704/206
• CPC Class Codes: G10L 21/0208 Noise filtering

Abstract

An apparatus and method for improving a sound quality of a portable terminal are provided. Particularly, an apparatus and method for tuning to a voice quality that a user desires using the portable terminal, in case where the user determines an abnormal sound quality, are provided. The apparatus includes a sound quality improving unit for selecting a Digital Signal Processing (DSP) filter value corresponding to a voice quality that a user desires among a plurality of DSP filters for controlling the voice quality according to a user'"'"'s voice quality.

Claims

1. An apparatus for improving a voice quality in a portable terminal, the apparatus comprising:

a sound quality improving unit for changing a Digital Signal Processing (DSP) filter value; and

a controller for controlling a voice quality according to a user'"'"'s voice quality based on the changed DSP filter value.

2. The apparatus of claim 1, wherein the sound quality improving unit changes the DSP filter value by detecting a user'"'"'s motion, determining a filter value corresponding to the user'"'"'s motion, and changing a transmission/reception sound quality using the determined filter value.

3. The apparatus of claim 2, wherein, in case where it is determined that the portable terminal is busy, the sound quality improving unit enables a sensor capable of detecting a motion, and determines a motion of the portable terminal using the detecting information collected by the enabled sensor.

4. The apparatus of claim 2, wherein the sound quality improving unit changes the transmission/reception sound quality by, in case where a motion for low pass is detected, changing an outputted low-frequency sound quality into a high-frequency sound quality by a filter value for the low pass and, in case where a motion for high pass is detected, changing an outputted high-frequency sound quality into a low-frequency sound quality by a filter value for the high pass.

5. The apparatus of claim 1, wherein a plurality of DSP filter values for controlling the voice quality are filter values whose gain values are differently controlled by frequency band.

6. The apparatus of claim 5, wherein the DSP filter value that controls the voice quality is mapped to a motion corresponding to each of the DSP filter values.

7. The apparatus of claim 1, wherein the sound quality improving unit changes a predefined DSP filter value using a predefined motion.

8. The apparatus of claim 7, wherein the sound quality improving unit uses one predefined DSP filter value, and changes the DSP filter value by changing a gain value corresponding to a frequency band of the DSP filter value depending on the motion.

9. A method for improving a voice quality in a portable terminal, the method comprising:

changing a Digital Signal Processing (DSP) filter value; and

controlling a voice quality according to a user'"'"'s voice quality based on the changed DSP filter value.

10. The method of claim 9, wherein changing the DSP filter value further comprises:

detecting a user'"'"'s motion;

determining a DSP filter value corresponding to the motion; and

changing a transmission/reception sound quality using the determined filter value.

11. The method of claim 10, wherein the detecting of the user'"'"'s motion further comprises:

in case that it is determined that the portable terminal is busy, enabling a sensor capable of detecting a motion; and

determining a motion of the portable terminal using the detecting information collected by the enabled sensor.

12. The method of claim 10, wherein changing the transmission/reception sound quality further comprises:

in case where a motion for low pass is detected, changing an outputted low-frequency sound quality into a high-frequency sound quality by a filter value for the low pass; and

in case where a motion for high pass is detected, changing an outputted high-frequency sound quality into a low-frequency sound quality by a filter value for the high pass.

13. The method of claim 9, wherein a plurality of DSP filter values for controlling the voice quality are filter values whose gain value is differently controlled by frequency band.

14. The method of claim 13, wherein the DSP filter value that controls the voice quality is mapped to a motion corresponding to each of the respective DSP filter values.

15. The method of claim 9, wherein the changing of the DSP filter value further comprises:

changing a predefined DSP filter value using a predefined motion.

16. The method of claim 15, wherein changing the DSP filter value uses one predefined DSP filter value, and changes a gain value corresponding to a frequency band of the DSP filter value depending on the motion.

17. A method for improving a voice quality in a mobile terminal by changing a predefined filter value, the method comprising:

determining if a user is on a voice call with another user;

determining a voice quality for the called user, if the user is on a voice call with another user;

determining if the voice quality is abnormal due to a high frequency band or a low frequency band;

determining if the voice quality is a high sound quality or a low sound quality;

performing a motion for a Low Pass Filter (LPF) operation if it is determined that the voice quality for the called user is a high sound quality;

performing a motion for a High Pass Filter (HPF) operation if it is determined that the voice quality for the called user is a low sound quality,

wherein the motion for the low pass or high pass filter operation comprises at least one of a preset motion and an easy motion of the mobile terminal directly set by the user, and

wherein the predefined filter comprises a filter whose gain value of the high frequency band or the low frequency band is differently set to pass the high frequency band or the low frequency band.

18. The method of claim 17, wherein the voice quality of the called user is continuously determined until the end of the call connection with the called user.

19. The method of claim 18, wherein the user of the mobile terminal sets a voice quality by a specific motion in a call connection state to improve the voice quality.