KR20070023282A - Mobile phone adapted the 3-Way speaker - Google Patents

Abstract

The present invention relates to a 3-way speaker type mobile communication terminal, comprising: a midrange speaker for reproducing a midrange frequency band signal, a high frequency reproducing speaker for reproducing a high frequency band signal, and a low range A low-frequency playback spoker for reproducing a frequency band signal, wherein the mid-range playback speaker (Squawker) and the high-frequency playback speaker (Tweeter) according to the characteristics of the frequency or voice of the voice or music output when the voice The user can listen to high quality voice or music by appropriately selecting any one or more of the low frequency reproduction spurs (Woofer).

Mobile terminal, speaker

Description

3-Ｗａｙ speaker type mobile communication terminal {Mobile phone adapted the 3-Way speaker}

1 is a circuit diagram showing the configuration of an embodiment of a 3-way speaker type mobile communication terminal according to the present invention;

2 is a diagram illustrating an example of mounting a speaker of a 3-way speaker type mobile communication terminal according to the present invention;

<Explanation of symbols for the main parts of the drawings>

10: speaker for mid range playback 20: speaker for high range playback

30 spurer 40 for low range reproduction: first switch

50: first path portion 51: second switch portion

52: first amplifier 53: band pass filter

60: second path portion 61: third switch portion

62: high pass filter 70: third path portion

71: fourth switch unit 72: second amplifier unit

73: low pass filter

The present invention relates to a 3-way speaker type mobile communication terminal, and more particularly, to a voice output technology of a mobile communication terminal.

In the case of a conventional mobile communication terminal, an earpiece for a voice call and a speaker for a ringtone are implemented separately, and in the case of a mobile communication terminal having stereo music listening function, two speakers having the same specification are used. .

However, in the related art, the speakers are not separated by function, and the speakers are independently connected to the output paths of the audio codec included in the mobile station modem (MSM) for controlling the entire mobile communication terminal. By using the user has a problem that the sound pressure and sound quality when the user listens to the voice or music almost depends on the characteristics of the speaker separately.

Accordingly, the present inventors apply a crossover technology used in Hi-Fi (High Fidelity) audio to a mobile communication terminal to select a speaker suitable for the purpose according to the characteristics of the sound source of each frequency to output voice or music And to study the 3-way speaker type mobile communication terminal that can improve the sound pressure effect.

The present invention has been invented under the above-described aspect, and provides a 3-way speaker type mobile communication terminal capable of listening to high quality voice or music by selectively using a speaker suitable for the frequency-specific characteristics of voice or music. For that purpose.

According to an aspect of the present invention for achieving the above object, a three-way speaker type mobile communication terminal according to the present invention and a mid-range reproduction speaker (Squawker) for reproducing the mid-range frequency band signal, and high-frequency frequency band signal A speaker for reproducing high frequencies for reproduction, and a spurer for reproducing low frequencies for reproducing low-frequency frequency band signals.

Therefore, at least one of the midrange speaker (Squawker), the high-range playback speaker (Tweeter), and the low-range playback speaker (Woofer) according to the frequency-specific characteristics of the voice or music at the time of speech or music output appropriately By selecting and outputting voice or music, the user can listen to high quality voice or music.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce the present invention.

1 is a circuit diagram showing the configuration of an embodiment of a 3-way speaker type mobile communication terminal according to the present invention.

As shown in the drawings, the 3-way speaker type mobile communication terminal according to the present invention includes a midrange speaker (Squawker) 10, a high-range reproduction speaker (Tweeter) 20, and a low range reproduction spurker ( Woofer) 30 is provided.

The midrange speaker (Squawker) 10 reproduces the midrange frequency band signal of about 1kHz to 10kHz.

The high frequency reproduction speaker (Tweeter) 20 reproduces a high frequency frequency band signal of about 10 kHz to 20 kHz.

The low frequency reproduction spoof 30 reproduces a low frequency frequency band signal of about 20 Hz to 1 kHz.

Accordingly, the 3-way speaker type mobile communication terminal according to the present invention is the mid-range speaker (Squawker) (10) and the high-range reproduction speaker (according to the characteristics of the frequency or voice output of the output audio or music, when the speaker ( One or more of the tweeter 20 and the sputter 30 for low-range reproduction (Woofer) are appropriately selected to output the voice or the music so that the user can listen to the high-quality voice or the music.

Meanwhile, the 3-way speaker type mobile communication terminal according to the present invention uses the first switch unit 40, the first path unit 50, the second path unit 60, and the third path unit 70. It is preferable to further include.

The first switch unit 40 is an audio codec (not shown) output port (Ear) of the output terminal of the control unit including a mobile station modem (MSM) for controlling the first half of the mobile communication terminal and Switch between music output ports (Aux).

At this time, the first switch unit 40 is connected to the call output port (Ear) of the audio codec (Audio Codec) output terminal during a general call or speaker phone call, the music output port (Aux) during music output )

The first path unit 50 is connected between the first switch unit 40 and the midrange speaker (Squawker) 10 to convert the signal output from the audio codec according to the mid-range frequency band.

In detail, the first path part 50 includes a second switch part 51, a first amplifier part 52, and a band pass filter part 53.

The second switch unit 51 is turned on during a normal call and turned off during a speaker phone call or music output.

The first amplifier 52 is turned off during a normal call and turned on when a speakerphone call or music is output.

The band pass filter unit 53 passes only a midrange frequency band signal among the signals output from the second switch unit 51 or the first amplifier unit 52.

The second path unit 60 is connected between the first switch unit 40 and the high frequency reproduction speaker (Tweeter) 20 to convert the signal output from the audio codec according to the high frequency band.

In detail, the second path part 60 includes a third switch part 61 and a high pass filter part 62.

The third switch unit 61 is turned off during a normal call or a speaker phone call, and turned on when music is output.

The high pass filter 62 passes only the high frequency band signal of the signals output from the third switch unit 61.

The third path unit 70 is connected between the first switch unit 40 and the low frequency reproduction spurer 30 to convert a signal output from the audio codec to a low frequency band.

In detail, the third path part 70 includes a fourth switch part 71, a second amplifying part 72, and a low pass filter part 73.

The fourth switch unit 71 is turned on during a normal call and turned off during a speaker phone call or music output.

The second amplifying unit 72 is turned off during a normal call and turned on during a speaker phone call or music output.

The low pass filter 73 passes only a low frequency band signal of the signals output from the fourth switch 71 or the second amplifier 72.

It looks at the voice or music output operation of the 3-Way speaker system according to the present invention having the above configuration.

First, the operation of the general call, the control unit (MSM: Mobile Station Modem) for controlling the first half of the mobile communication terminal is the first switch unit 40 and the second switch unit (1) of the first path unit 50 ( 51 and the first amplifier 52, the third switch unit 61 of the second path unit 60, the fourth switch unit 71 and the second amplifier unit (3) of the third path unit 70 ( Transfers a switching control command for the general call.

Then, according to the switching control command for the general call, the first switch unit 40 is connected to the call output port Ear of the audio codec output terminal.

In addition, the second switch unit 51 of the first path unit 50 and the fourth switch unit 71 of the third path unit 70 are turned on and the first of the first path unit 50 is turned on. The amplifying unit 52 and the second amplifying unit 72 of the third path unit 70 are off, and the third switch unit 61 of the second path unit 60 is off.

Accordingly, the midrange speaker (Squawker) 10 and the low range playback speaker (Woofer) 30 is connected to the call output port (Ear) of the audio codec output terminal without gain (Gain) The voice call signal output from the audio codec output terminal passes only a midrange frequency band signal of about 1 kHz to 10 kHz by the band pass filter unit 53 of the first path unit 50, thereby producing a midrange speaker. The Squawker 10 reproduces the midrange band of voice, and at the same time passes the low pass frequency band signal of about 20 Hz to 1 kHz by the low pass filter unit 73 of the third path unit 70, thereby allowing low frequency reproduction. The low frequency band of the voice is reproduced through the Woofer 30.

Next, the operation of the speaker phone call, the control unit (MSM: Mobile Station Modem) for controlling the first half of the mobile communication terminal is the first switch unit 40 and the second switch of the first path unit 50 The unit 51 and the first amplifier 52, the third switch unit 61 of the second path unit 60, the fourth switch unit 71 and the second amplification of the third path unit 70 The control unit 72 transmits a switching control command for the speaker phone call.

Then, according to the switching control command for the speaker phone call, the first switch unit 40 is connected to the call output port Ear of the audio codec output terminal.

In addition, the second switch unit 51 of the first path unit 50 and the fourth switch unit 71 of the third path unit 70 are turned off and the first of the first path unit 50 is turned off. The amplifying unit 52 and the second amplifying unit 72 of the third path unit 70 are turned on, and the third switch unit 61 of the second path unit 60 is turned off.

Accordingly, the first amplifier 52 of the first path unit 50 and the second amplifier 72 of the third path unit 70 are connected to the call output port Ear of the audio codec output terminal. Since the speaker for the mid range playback (Squawker) (10) and the low range playback speaker (Woofer) 30 is connected, respectively, the voice call signal output from the audio codec (Audio Codec) output terminal is the first amplifier ( 52), the band pass filter 53 of the first path section 50 passes only the midrange frequency band signal of about 1 kHz to 10 kHz, and passes through the midrange playback speaker Squawker 10. The faithful voice of the band is reproduced and simultaneously amplified by the second amplifier 72 of the third path section 70, and the low pass frequency band signal of about 20 Hz to 1 kHz is passed through the low pass filter 73. Through the low frequency reproduction spurer 30, faithful voices of the low range are reproduced.

On the other hand, when the operation when outputting music such as MP3, the control unit (MSM: Mobile Station Modem) for controlling the first half of the mobile communication terminal is the second of the first switch unit 40 and the first path unit 50 The switch unit 51 and the first amplifier unit 52, the third switch unit 61 of the second path unit 60, the fourth switch unit 71 and the second of the third path unit 70. The amplifier 72 transmits a switching control command for music output.

Then, according to the switching control command for the music output, the first switch unit 40 is connected to the music output port (Aux) of the audio codec (Audio Codec) output terminal.

In addition, the second switch unit 51 of the first path unit 50 and the fourth switch unit 71 of the third path unit 70 are turned off and the first of the first path unit 50 is turned off. The amplifying unit 52 and the second amplifying unit 72 of the third path unit 70 are turned on, and the third switch unit 61 of the second path unit 60 is turned on.

Accordingly, the first amplifier 52 of the first path unit 50 and the second amplifier 72 of the third path unit 70 are connected to the music output port Aux of the audio codec output terminal. Through the midrange playback speaker (Squawker) (10) and the low range playback speaker (Woofer) (30) is connected, and the high-frequency playback speaker (Tweeter) 20 is connected, the audio codec (Audio Codec) The music signal outputted from the output terminal is amplified by the first amplifier 52, and only the midrange frequency band signal of about 1 kHz to 10 kHz is passed by the band pass filter 53 of the first path unit 50, and the mid range Through the playback speaker (Squawker) 10, the faithful voice of the mid-range band is reproduced, and simultaneously amplified by the second amplifier 72 of the third path section 70, to the low pass filter section 73. The low frequency band signal of about 20Hz to 1kHz is passed through, and the low frequency reproduction sputter (Woofer) 30 for low frequency reproduction A faithful voice in the reverse band is reproduced, and at the same time, a high frequency frequency band signal of about 10 kHz to 20 kHz is passed through the high pass filter 62 of the second path unit 60, and then through a high frequency reproducing speaker (Tweeter) 20 The voice of the high band is reproduced.

Therefore, according to the present invention, at least one of the midrange speaker (Squawker), the high range speaker (Tweeter), and the low range playback speaker (Woofer) according to the frequency-specific characteristics of the voice or music when outputting voice or music By properly selecting and outputting voice or music, the user can listen to high quality voice or music.

Meanwhile, the 3-way speaker type mobile communication terminal according to the present invention is preferably implemented to have mechanical characteristics as shown in FIG. 2 in order to maximize sound pressure and sound quality characteristics and provide high quality voice or music.

2 is a diagram illustrating an example of mounting a speaker of a 3-way speaker type mobile communication terminal according to the present invention.

As shown in the drawing, in the case of the low range, since the sound is concentrated in the center of the speaker, the sound pressure of the voice or music output by forming a plurality of mechanical holes on the center of the sputter (Woofer) for low range reproduction And maximize the quality of the sound quality to provide high quality voice or music.

In addition, in the case of the high range, since the sound is concentrated at the edge of the speaker, a plurality of mechanical holes are formed at the edge of the high-pitched speaker (Tweeter) to maximize the sound pressure and sound quality characteristics of the output voice or music. To provide high quality voice or music.

In addition, in the case of the midrange, the sound is concentrated in the center of the speaker and the center of the edge of the speaker, so that a plurality of mechanical holes are formed at the center between the center and the edge of the midrange speaker. Maximize the sound pressure and sound quality characteristics of voice or music to provide high quality voice or music.

Accordingly, the present invention provides at least one of the midrange speaker (Squawker), the high-range playback speaker (Tweeter), and the low-range playback speaker (Woofer) according to the frequency-specific characteristics of the voice or music when outputting voice or music By appropriately selecting and outputting voice or music, the user can be provided with high quality voice or music, thereby achieving the above object of the present invention.

As described above, the 3-way speaker type mobile communication terminal according to the present invention is characterized in that the midrange speaker (Squawker), the high-range playback speaker (Tweeter) In addition, any one or more of the low range playback spoker (Woofer) can be appropriately selected to output voice or music, and thus have a useful effect of providing high quality voice or music to the user.

While the invention has been described with reference to the preferred embodiments, which are referred to by the accompanying drawings, it is apparent that various modifications are possible without departing from the scope of the invention within the scope covered by the following claims from this description. .

Claims (9)

A midrange speaker for reproducing midrange frequency band signals; A high frequency reproduction speaker (Tweeter) for reproducing a high frequency frequency band signal; A low frequency reproduction spurer for reproducing a low frequency frequency band signal; 3-Way speaker type mobile communication terminal comprising: a. The method of claim 1, The 3-way speaker type mobile terminal: A first switch unit for switching between a call output port (Ear) and a music output port (Aux) of an audio codec output terminal of the mobile communication terminal; A first path unit connected between the first switch unit and the midrange reproducing speaker (Squawker) to convert a signal output from the audio codec into a midrange frequency band; A second path unit connected between the first switch unit and the high frequency reproduction speaker (Tweeter) to convert a signal output from the audio codec to a high frequency frequency band; A third path unit connected between the first switch unit and the low frequency reproduction spurer to convert a signal output from the audio codec into a low frequency frequency band; 3-Way speaker type mobile communication terminal further comprising. The method of claim 2, The first path portion: A second switch unit that is turned on in a normal call and turned off in a speaker phone call or music output; A first amplifying unit which is turned off during a normal call and turned on when a speakerphone call or music is output; A band pass filter unit configured to pass only a midrange frequency band signal among the signals output from the second switch unit or the first amplifier unit; 3-Way speaker type mobile communication terminal comprising a. The method of claim 2, The second path portion: A third switch unit that is turned off during a normal call or a speaker phone call, and turned on when music is output; A high pass filter unit configured to pass only a high frequency frequency band signal among signals output from the third switch unit; 3-Way speaker type mobile communication terminal comprising a. The method of claim 2, The third path portion: A fourth switch unit that is turned on in a normal call and turned off in a speaker phone call or music output; A second amplifier which is turned off during a normal call and turned on when a speakerphone call or music is output; A low pass filter unit configured to pass only a low frequency band signal among signals output from the fourth switch unit or the second amplifier unit; 3-Way speaker type mobile communication terminal comprising a. The method of claim 2, The first switch unit: 3-Way speaker, characterized in that connected to the audio output port (Ear) of the audio codec output terminal during normal calls or speaker phone calls, and connected to the music output port (Aux) for music output Type mobile communication terminal. The method according to any one of claims 1 to 6, The low frequency playback spooker (Woofer): 3-Way speaker-type mobile communication terminal, characterized in that it comprises a plurality of mechanical holes on the center of the sputter (Woofer) for low-frequency reproduction. The method according to any one of claims 1 to 6, The high frequency reproduction speaker (Tweeter): 3-Way speaker type mobile communication terminal, characterized in that it comprises a plurality of mechanical holes in the edge portion of the high-pitched speaker (Tweeter). The method according to any one of claims 1 to 6, The midrange speaker (Squawker): 3-Way speaker type mobile communication terminal, characterized in that it comprises a plurality of mechanical holes in the center between the center and the edge of the midrange speaker (Squawker).

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