KR20060091033A - A method and a apparatus of improving outputting audio signal level for mobile phone - Google Patents

Abstract

The present invention provides an audible signal output from a mobile terminal at a constant volume in all audio bands, and includes: an audio output unit for outputting an audio signal and an adjustment source signal output from the mobile terminal at a controlled level for each predetermined band; A controller for controlling and monitoring the audio signal and the adjustment source signal for improving the volume at a band-level controlled level; And an audio detector for inputting an audio signal, detecting a volume level for each predetermined band, and applying the same to the controller, and adjusting the audio signal to be output at a constant volume in all audio bands by the portable terminal controller. A start process of initializing gain of the audio output unit; A source process of generating, by the control unit, an audio adjustment source signal from the codec source unit of the audio output unit, outputting the audio adjustment source signal to the speaker unit, and receiving the input from the receiver unit; Detecting a volume level of the input audio signal for each predetermined band and comparing and analyzing the input audio signal with a reference level for each band by the controller; An amplification process of comparing and determining whether the input volume level is lower than the reference level, and setting up amplification control to the reference level if the input level is low; Comparing and judging whether the input sound level is higher than the reference level, and if it is high, attenuation control is set to the reference level and the output is compensated to the set level, thereby improving the output audible signal sound quality of the mobile terminal. It works.

Description

Apparatus and method for improving speaker output volume of mobile terminal {A METHOD AND A APPARATUS OF IMPROVING OUTPUTTING AUDIO SIGNAL LEVEL FOR MOBILE PHONE}

1 is a functional block diagram of an audio signal output device of a conventional portable terminal speaker;

2 is a functional configuration of the speaker output volume improvement device of the present invention portable terminal,

Figure 3 is a flow chart of the speaker output volume improvement method of the present invention portable terminal.

          ** Explanation of symbols on the main parts of the drawing **

100: audio output unit 110: codec source unit

120: codec filter unit 130: speaker unit

200: audio detector 210: receiver

220: level unit 300: control unit

The present invention compensates and improves the amplification level for each band so that the audible signal output from the mobile terminal is output at a constant volume in all audio bands. In particular, the audible signal output from the speaker is received by the receiver and analyzed according to the level for each band. Since the band lower than the level, the gain of the codec filter is upwardly controlled to compensate for the output, and the present invention relates to an apparatus and a method for improving the speaker output volume of a mobile terminal to output a constant level in all audio bands.

The mobile terminal for mobile communication (MS: MOBILE STATION) freely moves in the service area formed by the corresponding base station (RAN: RADIO ACCESS NETWORK) of the registered system and monitors and monitors the mobile switching station (MSC: MOBILE SWITCHING CENTER). It is a high-tech wireless communication device that allows individuals to carry with them at any time while always carrying a wireless connection through a communication path established by control and switching.

Since the mobile terminal (MS) has a relatively small amount of time used for actual communication, a variety of additional services have been developed and provided to increase the low utilization rate, to make application of the real life and convenient.

The additional services include those developed and provided by a mobile communication service provider and those developed and provided by a mobile terminal producer. For example, the additional services developed and provided by the producer include a camera, a Bluetooth, a wireless LAN, a phonebook, Games, MP3s, TV receivers, electronic calculators, calendars, and the like, developed and provided by mobile communication service providers, include text and video messages, online games, wireless Internet, caller identification, and the like. A feature is developed and added.

As the multimedia function of the portable terminal is highlighted, there is a demand for improving the sound quality of an audio signal from functions such as video communication, MP3, TV reception, and radio reception, and amplifying to a certain level in all frequency bands in improving the sound quality of the audio signal. It is also important to improve the output volume.

Accordingly, there is a need to develop a volume improvement technique for outputting audio signals output from a speaker of a mobile terminal at a constant level in all audio bands.

Hereinafter, a speaker volume output method of a portable terminal according to the prior art will be described with reference to the accompanying drawings.

Attached to describe the prior art, FIG. 1 is a functional configuration diagram of an audio signal output device of a portable terminal speaker according to the prior art.

Referring to the accompanying FIG. 1, the audio signal output apparatus of the portable terminal speaker according to the prior art will be described. The codec unit 20 is controlled by the control unit 10 for controlling and monitoring the entire operation of the portable terminal. Decode the signal and output it.

The audio signal output from the codec unit 20 is applied to the speaker unit 30, and the speaker unit 30 converts an electrical audio signal into an audible audio sound signal and outputs the audio signal.

The speaker unit 30 is largely composed of a speaker for converting and outputting an electrical audio signal into an audible audio signal and a mechanism for fixing the speaker, resonating the output audio signal, and adjusting the output direction.

When the instrument is not used, an audio signal based on the characteristics of the speaker is output. When the instrument is used, the resonance and frequency characteristics are partially improved by the size, shape, and material of the instrument.

In order to change the sound quality characteristics by changing the structure of the apparatus, it is difficult to apply uniformly because the structure of the apparatus is different depending on the shape of each speaker, which takes a lot of time and cost, and particularly, in a mobile terminal where size and volume are limited. There are problems such as more difficult to apply.

The present invention receives an audio signal output from a speaker of a mobile terminal and analyzes it by band, and if it is determined to be below a reference level in each audio band, up-controls the gain of the codec filter unit. It is an object of the present invention to provide an apparatus and method for improving speaker output volume of a portable terminal for attenuating and controlling attenuation of the audio band so that an audio audible signal of a constant volume is output in an audio band.

In order to achieve the above object, the present invention provides an audio output unit for outputting an audio signal and an adjustment source signal output from a mobile terminal at a controlled level for each predetermined band; A control unit connected to the audio output unit for controlling and monitoring the audio signal by normal operation and the adjustment source signal for improving the volume at a level controlled for each band; And an audio detector configured to input an audio signal output from the audio output unit, detect a volume level for each predetermined band, and apply the audio signal to the controller.

In addition, the present invention has been made in order to achieve the above object, the mobile terminal control step of initializing the gain of the audio output unit when the audio signal is adjusted to be output at a constant volume in all audio bands; A source step of generating an audio adjustment source signal from the codec source part of the audio output part by the control part of the process, outputting it to the speaker part, and receiving the input to the receiver part; A detection step of detecting a volume level of the audio signal input in the process for each predetermined band and comparing and comparing the level with a reference level for each band by a control unit; An amplifying process of comparing and determining whether the volume level of each band inputted in the process is lower than the reference level, and setting the upward amplification control to the reference level if the level is low; Comparing and determining whether the volume level for each band input in the above process is higher than the reference level, and if the high level is attenuating control setting to the reference level and compensation output to each of the set level, characterized in that the attenuation process.

Hereinafter, the present invention will be described with reference to the accompanying drawings, an apparatus and a method for improving speaker output volume of a portable terminal.

Attached to explain the present invention, Figure 2 is a functional block diagram of the speaker output volume improving device of the portable terminal according to the present invention, Figure 3 is a flow chart of the speaker output volume improvement method of the portable terminal according to the present invention.

Referring to FIG. 2, the speaker output volume improvement apparatus of the mobile terminal according to the present invention is to output an audio signal and an adjustment source signal output from the mobile terminal for mobile communication at a controlled level for each predetermined band. A codec source unit 110 for generating and outputting an audio signal according to the normal operation of the portable terminal under control of the controller 300 or an adjustment source audio signal for volume improvement; A codec filter unit 120 for outputting an audio signal applied from the codec source unit 110 by varying an amplification rate for each predetermined band under the control of the controller 300; The speaker unit 130 is connected to the codec filter unit 120 and converts the audio signal applied to an audible signal and outputs, and is an audio signal by normal operation according to the control signal of the control unit 300, or 100 Audio output for outputting audible signal of amplified volume at a certain level in the whole audio band because the output of the adjustment source signal of Hz to 10 KHz frequency is generated and output at a constant level in all bands and compensated for the amplification rate for each predetermined band. Section 100,

The audio output unit 100 is connected to the audio output unit 100 to control and monitor the audio signal by the normal operation and the adjustment source signal for improving the volume at a controlled level for each band. When the mobile terminal is normally operated, the audio output unit ( The audio output unit 100 controls the audio signal to be output as an audible signal having an amplification rate set for each predetermined band by controlling the audio signal 100, and outputs the audio signal to be output at the same level for each audio band. Generates and outputs an adjustment source signal having a frequency of 100 Hz to 10 KHz, and if the volume level input by the audio detector 200 and detected for each predetermined band is small compared to the corresponding reference level, the output signal of the corresponding band has a reference level. Set the gain of the codec filter unit 120 of the audio output unit 100 to amplify upward amplification. The control unit 300 to control and set the print control,

The audio signal output from the audio output unit 100 is received and input, and a volume level is detected for each predetermined band and applied to the controller 300. The audible output from the speaker unit 130 of the audio output unit 100 is performed. A receiver 210 for detecting a signal and converting the signal into an electrical audio signal; The level unit 220 is connected to the receiver unit 210 and detects and outputs a volume level of the detected audio signal for each predetermined band, and is set by inputting an audible signal output from the audio output unit 100. The audio detecting unit 200 may be divided into predetermined audio bands, detect a volume level of each band, and output the detected audio level to the controller 300.

Hereinafter, according to the present invention having the configuration described above, a speaker output volume improvement device of a portable terminal will be described in detail with reference to the accompanying drawings.

The controller 300 of the mobile terminal for mobile communication applies a source of a voice level signal or an audio signal generated by mobile communication or additional service operation to the codec source unit 110 of the audio output unit 100 so as to correspond to the codec source unit 110 of the audio output unit 100. An audio signal is generated and output, and the audio signal output from the codec source unit 110 is applied to the codec filter unit 120.

The codec filter unit 120 adjusts and outputs a level at a different amplification rate or gain GAIN for each band (BANDWIDTH) under the control of the control unit 300, and outputs from the codec source unit 110. The level LEVEL is adjusted and output with the gain GAIN set for each frequency band applied.

Since the audio signal output from the codec filter unit 120 is applied to the speaker unit 130 and converted into an audible signal, the user listens.

The audio output unit 100 is generated by the codec source unit 110 under the control of the control unit 300, the codec filter unit 120 amplifies the level (LEVEL), and outputs the audio signal from the speaker unit 130 The amplified output may not be output at a constant level in all bands of the audio.

As described above, for example, the amplification at a predetermined level in all audio frequency bands in the range of 100HZ to 10KHz and the output is not performed due to the frequency characteristics of each component constituting the audio output unit 100. The audio component amplifies and outputs an audio signal input in a predetermined specific audio frequency band to a normal level, but an audio signal input in another frequency band has a characteristic of changing amplification factor or gain GAIN.

That is, when the audio frequency signal in the range of 100HZ to 10KHz is input, a signal of a specific frequency band is normally amplified and output at a set gain (GAIN) or amplification rate, and a signal of another frequency band is amplified by a different gain (GAIN). There is a characteristic to output.

Therefore, the user may not hear the normal level of the audio signal to be output, and it is a technique of the present invention to solve the above problem.

When the audio signal output from the audio output unit 100 is to be amplified and output at a predetermined level LEVEL in all audio bands BANDWIDTH, the control unit 300 controls the codec filter unit ( 120) to initialize (initialize) the amplification factor or gain (GAIN) and set the reference level.

The control unit 300 controls the codec source unit 110 to generate and output all signals of the audio band for adjustment, and as described above, the adjustment audio signal generated from the codec source unit 110 is a codec filter unit 120. ) Is amplified by the gain GAIN of the reference level, and is applied to the speaker unit 130 and converted into an audible signal.

The audio detector 200 inputs an audible signal output from the speaker unit 130 of the audio output unit 100 through the receiver unit 210, converts the audio signal into an electrical audio signal, and outputs it to the level unit 220. The receiver 210 operates as a microphone (MIC: MICROPHONE) function.

The receiver unit 210 that inputs an audible signal output from the speaker unit 130 outputs an electrical audio signal to the level unit 220, and the level unit 220 divides the input audio signal into a predetermined band. Each level LEVEL is detected and output to the controller 300.

The controller 300 receives a level detected and applied for each predetermined audio band divided by the level unit 220 of the audio detector 200, and compares the level with a reference level.

When the audio signal level of a specific band input from the audio detector 200 is higher than a reference level, the controller 300 controls the codec filter unit 120 to attenuate and control the amplification rate, and to input the audio signal. If the level is lower than the reference level, the process of controlling the codec filter unit 120 to be amplified upward is repeated in all audio bands.

Since the control unit 300 sets the amplification factor adjusted in each audio (AUDIO) band as described above to the codec filter unit 120, the audio signal generated from the codec source unit 110 is output to each audio Each amplified by the corresponding amplification ratio or gain of the band is applied to the speaker unit 130, and output as an audible signal from the speaker unit 130, the user to listen to the audible signal output at a constant volume in all audio bands It has the advantage of being.

Hereinafter, a method of improving speaker output volume of a mobile terminal according to the present invention will be described with reference to FIG.

When the audible signal is adjusted by the mobile communication terminal control unit 300 to be output at a constant volume in all audio bands, the gain GAIN of the audio output unit 100 is initialized and the audible signal is controlled by the control unit 300. Determining whether to adjust the output so that the audio volume is output at a constant level in all audio bands (S100); When adjusting to a volume of a predetermined level in the process (S100), the control unit 300 controls the audio output unit 100 to initialize the amplification gain (GAIN) of the codec filter unit 120 (S110) The beginning process,

The control unit 300 of the start process generates an audio adjustment source signal from the codec source unit 110 of the audio output unit 100 and outputs it to the speaker unit 130 and the receiver unit 210 of the audio detection unit 200. The control unit 300 controls the codec source unit 110 of the audio output unit 100 to generate and output an adjustment source signal at a constant level in the audio band of 100 Hz to 10 KHz. Process (S120); In step S120, the audio adjustment source signal output from the codec source unit 110 is applied to the speaker unit 130 through the codec filter unit 120 in which the gain is initialized and output as an audible audio signal, and the audio detection unit Source process consisting of a process (S130) for inputting through the receiver unit 210 of (200),

The audio signal input in the source process detects a volume level for each predetermined band and compares and analyzes the audio level input by the receiver unit 210 by the control unit 300 in the level unit 220. Dividing a predetermined band and detecting each volume level and outputting the volume to the controller 300 (S140); A detection step of comparing and analyzing the volume level detected for each band by the control unit 300 of step S140 with a reference level of the corresponding band (S150);

In the detection process, it is determined whether the volume level of each band inputted is lower than the reference level, and if it is low, the amplification control is set to the reference level. The output level of the audio signal detected by the controller for each band is equal to a predetermined reference level. Determining whether it is at a low level in preparation (S160); If it is determined that the output level of the audio signal detected in the step (S160) is lower than the predetermined reference level, the step of setting up to the codec filter unit 120 by controlling the amplification rate of the corresponding band to the reference level (S170). Amplification process consisting of

In the amplification process, a comparison is made to determine whether the volume level for each band input is higher than the reference level. If the volume level is higher than the reference level, the attenuation control is set to a reference level and the output is compensated to the set level. Determining whether it is at a high level in contrast to step S180; If it is determined that the output level of the audio signal detected in the step (S180) is higher than the predetermined reference level, the amplification rate of the corresponding band is attenuated compensation control to the reference level and set in the codec filter unit 120 (S190 ); The codec filter 120 of each process includes attenuation process including a process of outputting the amplification rate of the audio signal input by the amplification rate set for each band at a volume compensated (S200).

Hereinafter, a method of improving the speaker output volume of a mobile terminal according to the present invention having the above configuration will be described in detail with reference to the accompanying drawings.

The controller 300 of the mobile communication terminal determines whether the volume of the audio signal output from the audio output unit 100 is adjusted to be output at a constant level in all audio bands (S100), and in the determination (S100), When adjusting to amplify and output at a predetermined level in all audio bands, the codec filter unit 120 is controlled to initialize and set the amplification factor or gain GAIN to be the same in all audio bands (S110).

The control unit 300 of the process (S110), by controlling the codec source unit 110, for example, generates and outputs an audio frequency signal in the range of 100 HZ to 10 KHz as an adjustment signal (S120), the amplification rate is Since it is applied to the speaker unit 130 through the codec filter unit 120 which is uniformly and uniformly initialized, it is output as an audible signal and input through the receiver unit 210 of the audio detector 200 (S130).

The audio signal input by the receiver unit 210 of the source process S130 is applied to the level unit 220, and the level unit 220 divides the input audio signal by the corresponding band BANDWIDTH. In operation S140, the volume level LEVEL of the audio signal is detected for each of the divided bands.

The controller 300 of step S140 analyzes whether the level value of the audio signal detected by the band from the level unit 220 for each band is compared with a corresponding reference level value to determine whether it is a large value or a small value (S150).

The controller 300 of the process S150 determines whether the detected level value of the analyzed corresponding band is lower than a reference level value (S160), and a value lower than the reference level value is detected and input in the determination. In operation S160, the controller 300 controls the codec filter 120 to adjust the amplification factor of the corresponding band to be set upward at operation S170.

When the level value detected and input in step S160 is not lower than the reference level value, it is determined whether the level is higher than the reference level of the corresponding band (S180), and when the level is higher than the reference level in the determination (S180), the controller 300 ) Controls the codec filter unit 120 to attenuate and adjust the amplification factor to become a reference level, and sets the adjusted value as described above to the codec filter unit (S190).

As described above, the codec filter unit 120 in which different amplification ratios are applied to each band is applied to adjust the gain GAIN to a source audio signal applied from the codec source unit 110 at an amplification rate set for each audio band. Output to the 130, the speaker unit 130 converts the output to an audible signal.

Therefore, the user of the portable terminal has an advantage of listening to a signal transmitted at a constant volume in all audio bands.

According to the present invention, the audible signal of the audio output from the mobile terminal is amplified at the same volume in all the bands of the audio signal and has an industrial use effect.

In addition, the present invention having the configuration described above, since the portable terminal outputs the audio signal of the same volume irrespective of the frequency in the audio band, there is a convenient effect to improve the sound quality of the audio signal and increase the preference.

Claims (12)

An audio output unit for outputting an audio signal and an adjustment source signal output from the portable terminal at a controlled level for each predetermined band; A control unit connected to the audio output unit for controlling and monitoring the audio signal by normal operation and the adjustment source signal for improving the volume at a controlled level for each band; And an audio detector configured to input an audio signal output from the audio output unit, detect a volume level for each predetermined band, and apply the audio signal to the controller. The method of claim 1, wherein the audio output unit, A codec source unit for generating and outputting an audio signal according to the normal operation of the mobile terminal or an adjustment source audio signal for volume improvement under the control of the controller; A codec filter unit for outputting an audio signal applied from the codec source unit by varying an amplification rate for each predetermined band under the control of the controller; And a speaker unit connected to the codec filter unit to convert an audio signal applied to the codec filter unit into an audible signal and output the audible signal. The method of claim 1, wherein the audio output unit, The controller is connected to the control unit and generates and outputs an audio signal of normal operation or a control source signal having a frequency of 100 Hz to 10 KHz at a constant level, and compensates and outputs an amplification rate for each predetermined band. An apparatus for improving speaker output volume of a portable terminal, characterized by comprising a configuration for outputting an audible signal of a volume amplified to a predetermined level. The method of claim 1, wherein the audio detection unit, A receiver unit which detects an audible signal output from the speaker unit of the audio output unit and converts it into an electrical audio signal; And a level unit for connecting to the receiver unit and detecting and outputting the volume level of the detected and applied audio signal for each predetermined band. The method of claim 1, wherein the audio detector, And audible signals outputted from the audio output unit to separate predetermined audio bands, detect volume levels of each band, and output the detected audio levels to the controller. The method of claim 1, wherein the control unit, When the portable terminal is normally operated, the audio output unit is controlled to control the audio signal to be output as an audible signal having an amplification rate set for a predetermined band, and the output audio signal is provided at the same level for each audio band. In order to adjust the output, the audio output unit generates and outputs an adjustment source signal having a frequency of 100 Hz to 10 KHz, and if the volume level input by the audio detector and detected for each predetermined band is smaller than the corresponding reference level, The loudspeaker output volume of the portable terminal, characterized in that the audio output section of the codec filter unit gain amplification control setting so that the output signal of the band is a reference level, and the attenuation control setting and monitoring so that the reference level is a high level. Improvement device. Starting process of initializing the gain of the audio output unit when the audible signal is adjusted to be output at a constant volume in all audio bands by the portable terminal controller; A source process of generating an audio adjustment source signal from the codec source part of the audio output part by the control part of the process, outputting it to the speaker part, and receiving an input to the receiver part; A detection process of detecting a volume level of the audio signal input in the above process for each predetermined band and comparing and analyzing the audio signal with a reference level for each band by a control unit; An amplification process of comparing and determining whether the volume level for each band inputted in the process is lower than the reference level, and setting the upward amplification control to the reference level if the level is low; Comparing and determining whether the volume level for each band input in the process is higher than the reference level, and if it is high, the attenuation process is set to attenuation control to the reference level and compensated output to the set level, respectively. Way. The method of claim 7, wherein the starting process, Determining whether the audible signal is adjusted to be output at a constant level in all audio bands by the controller of the mobile communication terminal; When adjusting the volume to a constant level in the above process, the control unit controls the audio output unit, the speaker output volume improvement method of the portable terminal, characterized in that the process consisting of initializing and setting the gain of the codec filter unit. The method of claim 7, wherein the source process, Controlling the codec source unit of the audio output unit by the control unit of the starting process to generate and output an adjustment source signal at a constant level in the audio band of 100 Hz to 10 KHz; In the above process, the audio adjustment source signal output from the codec source unit is applied to the speaker unit through the codec filter unit in which the gain is initialized and output as an audible audio signal, and is input through the receiver unit of the audio detection unit. A method for improving speaker output volume of a mobile terminal. The method of claim 7, wherein the detecting process, Dividing the audio signal input by the receiver of the source process into predetermined bands by a level unit, detecting each volume level, and outputting the volume to the controller; And comparing and analyzing the volume level detected for each band by a reference level of the corresponding band by the controller of the process. The method of claim 7, wherein the amplification process, Determining whether an output level of an audio signal detected and input for each band by the control unit of the detection process is a low level compared to a predetermined reference level; If it is determined that the output level of the audio signal detected in the above step is lower than the predetermined reference level, the mobile terminal comprising the step of up-compensation control of the amplification rate of the corresponding band to the reference level to set the codec filter unit To improve speaker output volume. The method of claim 7, wherein the attenuation process, Determining whether an output level of the audio signal detected and input in the amplifying process is a high level compared to a predetermined reference level; If it is determined that the output level of the audio signal detected in the process is higher than a predetermined reference level, controlling the amplification rate of the corresponding band to a reference level and setting the codec filter to reduce and compensate for the reference level; And the codec filter unit of the process comprises outputting the amplification rate of the audio signal input by the amplification rate set for each band to a volume compensated for.

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