MOBILE TERMINAL AND METHOD FOR PROCESSING AUDIO DATA THEREOF

• US 20120179474A1
• Filed: 01/06/2012
• Published: 07/12/2012
• Est. Priority Date: 01/07/2011
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Seong Hwan
• Application Number:
  US13/344,888
• Publication Number:
  US 20120179474A1
• Time in Patent Office: Days
• US Class Current: 704/500
• CPC Class Codes: G06F 3/165 Management of the audio stream, e.g. setting of volume, audio stream path
• CPC Class Codes: G10H 1/0091 Means for obtaining special acoustic effects combined with modulation G10H1/043
• CPC Class Codes: G10H 2210/301 Soundscape or sound field simulation, reproduction or control for musical purposes, e.g. surround or 3D sound; Granular synthesis
• CPC Class Codes: G10L 19/16 Vocoder architecture
• CPC Class Codes: G10L 19/26 Pre-filtering or post-filtering
• CPC Class Codes: H04M 1/72442 for playing music files
• CPC Class Codes: H04R 3/04 for correcting frequency response
• CPC Class Codes: H04W 52/0274 by switching on or off the equipment or parts thereof
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A mobile terminal and audio data processing method thereof are provided. The method includes preprocessing, at a control unit, audio data, sending the preprocessed audio data to an audio processing unit, decoding, at the audio processing unit, the preprocessed audio data, and outputting the decoded audio data. The method is capable of reducing power consumed when playing audio data. The method is advantageous when processing multichannel audio data and various sound effects.

Claims

1. An audio data processing method of a mobile terminal, the method comprising:

preprocessing, at a control unit, audio data;

sending the preprocessed audio data to an audio processing unit;

decoding, at the audio processing unit, the preprocessed audio data; and

outputting the decoded audio data.

2. The method of claim 1, wherein the preprocessing comprises:

decoding an input audio signal into the audio data; and

compressing the decoded audio data into a playable audio format.

3. The method of claim 2, wherein the input audio signal may be in one of a Moving Picture Experts Group (MPEG)-1 or MPEG-2 audio layer-3 (MP3) format, a Windows Media Audio (WMA) format, and an Advanced Audio Coding (AAC) format.

4. The method of claim 2, wherein the compressing comprises applying at least one sound effect to the decoded audio data to recovering loss that occurs during decoding.

5. The method of claim 4, wherein sound effect includes at least one of a Trubass for controlling bass of the audio data, Sound Retrieval System (SRS) for controlling three dimensionality of the audio data, WOW for expressing the three dimensional effect, normal, classical for reinforcing high tones of the audio data, jazz for reinforcing bass of the audio data, rock, and FOCUS for transferring an expanded sound effect image.

6. The method of claim 2, wherein the compressing comprises selecting one of a lossless compression algorithm and a lossy compression algorithm to compress the decoded audio data.

7. A mobile terminal comprising:

a controller for preprocessing audio data; and

an audio processor for decoding the preprocessed audio data and for outputting the decoded audio data under the control of the controller.

8. The mobile terminal of claim 7, wherein the controller comprises an audio preprocessor for decoding an input audio signal into the audio data and for compressing the decoded audio data into a playable audio format.

9. The mobile terminal of claim 8, wherein the input audio signal may be in one of a Moving Picture Experts Group (MPEG)-1 or MPEG-2 audio layer-3 (MP3) format, a Windows Media Audio (WMA) format, and an Advanced Audio Coding (AAC) format.

10. The mobile terminal of claim 8, wherein the audio preprocessor applies at least one sound effect to the decoded audio data to recovering loss that occurs during decoding.

11. The mobile terminal of claim 10, wherein sound effect includes at least one of a Trubass for controlling bass of the audio data, Sound Retrieval System (SRS) for controlling three dimensionality of the audio data, WOW for expressing the three dimensional effect, normal, classical for reinforcing high tones of the audio data, jazz for reinforcing bass of the audio data, rock, and FOCUS for transferring an expanded sound effect image.

12. The mobile terminal of claim 8, wherein the audio is compressed by one of a lossless compression algorithm and a lossy compression algorithm.