JP4201871B2 - Acoustic device, control method thereof, and control program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a technique for displaying information relating to sound, and more specifically, character information is displayed together with a spectrum analyzer display representing a frequency characteristic of speech.
[0002]
[Prior art]
As an acoustic system such as a car audio system, one that measures and displays the strength of each audio signal being reproduced for each frequency band is known. A technique for measuring the strength of an audio signal for each frequency band is called frequency analysis, and such a combination of signal strengths for each band is called frequency characteristics. Further, such a device for measuring frequency characteristics and a device for measuring the frequency characteristics is commonly called a spectrum analyzer, and the processing for displaying the measurement results of the frequency characteristics and the displayed measurement results are commonly called spectrum analyzer display.
[0003]
In such a conventional technique, the intensity of a signal is measured by dividing a changing audio signal into several frequency bands, and how much signal is in which band, how much, for example, how many lines expand and contract in the vertical direction. These bar graphs are displayed side by side in real time on the display. In such a display, each bar graph is called a level bar. To display each level bar, for example, a number of horizontal bar segments using fluorescent display tubes are arranged vertically, and the signal in that band is displayed. Light up from the bottom according to the number of lights.
[0004]
This spectrum analyzer display is a display of frequency characteristics, but it not only serves to inform the user of the characteristics of the voice being listened to, but also changes its shape according to changes in the voice being heard by the ear. Is also stimulating and has the effect of increasing the pleasure of the user enjoying the audio. Note that the voice in the present application is a wide concept including not only a human voice but also various kinds of sounds such as music.
[0005]
[Problems to be solved by the invention]
By the way, as typical information related to the currently listened sound, for example, the name of the broadcasting station received on the radio, the disc title attached to the MD currently being played back, and each MD song are attached. Character information such as the recorded track title is also conceivable.
[0006]
Conventionally, these character information items are displayed on a display unit of another unit regardless of the frequency characteristics, or are displayed in an empty display area where the spectrum display is turned off even when the same display unit is used. Was. For this reason, although the user is information related to the same voice, the frequency characteristics and the character information must be recognized separately by switching the display or moving the eyes around, which is troublesome. There was a problem.
[0007]
In addition, in order to increase the user's pleasure and taste when enjoying audio, it has been desired to display the frequency characteristics and character information in association with each other as information related to the same voice.
[0008]
The present invention has been proposed to solve the problems of the prior art as described above, and its purpose is to display both frequency characteristics and character information together so that both can be easily recognized. That is.
[0009]
[Means for Solving the Problems]
In order to achieve the above-described object, the first aspect of the present invention provides a means for reproducing sound, a means for reading a title corresponding to the sound being reproduced, and a signal for each of a plurality of frequency bands included in a changing sound signal. A means for measuring the strength and a level bar display of the measured signal strength for each band, and a level bar for each band. tip And a means for displaying the title characters one by one.
The invention of claim 3 is grasped from the viewpoint of a method for controlling the apparatus of claim 1, and is included in a step of reproducing sound, a step of reading a title corresponding to the sound being reproduced, and a changing sound signal. Step of measuring the signal strength for each of a plurality of frequency bands, and displaying the measured signal strength for each band by a level bar. tip And the step of displaying the title characters one by one.
The invention of claim 5 is taken from the viewpoint of a program for controlling the device of claim 1, and is a program for controlling an acoustic device, which causes the acoustic device to reproduce sound and to reproduce the sound being reproduced. The corresponding signal is read, the signal strength is measured for each of a plurality of frequency bands included in the changing audio signal, the level of the measured signal is displayed for each band, and the level for each band. Bar tip Further, the title characters are displayed one by one.
[0011]
In the above aspect, MD And CD Titles recorded on recording media such as , The name of the radio or TV station you ’re currently receiving , From recording media and radio Since it is displayed together with the reproduced sound, it becomes easy to recognize the title together with the frequency characteristic.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. In addition, about each figure used by description, the same code | symbol is attached | subjected about the same member as the figure demonstrated before that, and the same kind of member, and description is abbreviate | omitted.
[0019]
[1. First Embodiment]
The first embodiment is , The title of the current operation mode, for example, the name of the currently received radio or television broadcasting station is displayed one character at a time immediately above the top of the level bar.
[0020]
[1-1. Constitution〕
In the first embodiment, as shown in FIG. 1, a center unit 1 having functions such as a CD player and a radio and a spectrum analyzer unit 2 for measuring the strength of each band of an audio signal are connected by a communication bus 8. It is a connected car audio system.
[0021]
Each unit constituting the embodiment as described above includes a computer including a CPU and other audio mechanisms, and various functions of each unit control these computers and audio mechanisms by a computer program. This is realized. However, since the CPU type, memory capacity, programming language type, program storage method, and the like can be changed in various ways, the embodiment will be described below using virtual circuit blocks corresponding to each function. The same applies to the second and subsequent embodiments to be described.
[0022]
That is, the center unit 1 shown in FIG. 1 includes means 11 for controlling audio. The means 11 for controlling audio controls a CD playback mechanism and a radio tuning mechanism (not shown). This is the part where the audio signal obtained from these mechanisms flows from the speaker.
[0023]
The center unit 1 includes a display 12 and a means 13 for displaying a spectrum analyzer. The display 12 and the means 13 for displaying the spectrum analyzer are parts used to display the spectrum analyzer in cooperation with the spectrum analyzer unit 2. In other words, the spectrum analyzer unit 2 includes means 21 for measuring the signal strength and means 22 for sending the measurement result. Of these, the means 21 for measuring the signal strength of the audio signal passed from the center unit 1 via the bus B. This is the part that measures the strength for each frequency band. The means 22 for sending the measurement result is a means for sending the measurement result thus measured to the center unit 1 via the bus B.
[0024]
The display unit 12 of the center unit 1 has a display screen using a fluorescent display tube, liquid crystal, electroluminescence, etc., and the means 13 for displaying the spectrum analyzer is a part for displaying the received measurement result on the display unit 12. is there.
[0025]
The center unit 1 also includes means 15 for determining characters to be displayed, means 16 for displaying characters, and means 17 for selecting a display mode. These are the parts used to display the character information related to the audio signal on the display 12 together with the signal strength. Among these, the means 15 for determining the character to be displayed is a means for determining what character is to be displayed together with the strength of the signal according to the operation state such as which sound source is used.
[0026]
In the center unit 1, information 14 to be displayed is prepared in advance, and the means 15 for determining characters to be displayed is displayed by referring to the information 14 to be displayed as necessary. Decide which character to use. For example, as the information 14 to be displayed, a character string representing a broadcasting station name is prepared for each frequency received by the radio, and the means 15 for determining the character to be displayed depends on which frequency is received. Thus, the character string of the corresponding broadcasting station name is determined and passed to the means 16 for displaying characters.
[0027]
The character display means 16 is a means for displaying the character thus determined on the display 12 at a position corresponding to the signal strength for each band. Display one character at a time just above the top. The display mode selecting means 17 is for selecting a display mode such as whether or not to display such characters together with the spectrum analyzer, and the user selects the display mode by pressing a key on the operation unit 18. Can do.
[0028]
[1-2. Action)
The present embodiment configured as described above operates as follows. Here, the operation procedure of the first embodiment is shown in the flowchart of FIG.
[1-2-1. (Select display mode)
That is, when the user wants to display characters together with the spectrum analyzer, the user instructs the means 17 for selecting the display mode to do so by pressing a predetermined key of the operation unit 18 or the like. A character displayed together with the spectrum analyzer is called a title, a spectrum analyzer displayed together with the title is called a title display spectrum analyzer, and a mode in which the spectrum analyzer and the title are displayed together is called a title label spectrum analyzer mode.
[0029]
When the title display spectrum mode is not selected (step 21), the character display means 16 does not display the characters on the display unit 12, but the title display spectrum mode is not selected. However, as in the prior art, the means 13 for displaying the spectrum analyzer displays the spectrum spectrum on the display 12.
[0030]
[1-2-2. (Signal level measurement)
In order to display the spectrum analyzer in this way, the audio signal being reproduced is sent from the center unit 1 to the spectrum analyzer unit 2 via the bus B, and the spectrum analyzer 21 receives the strength of the audio signal received by the spectrum analyzer unit 2. Measure (level) for each frequency band. In order to measure the signal strength in this way, for example, a signal for each band is extracted from the audio signal by a filter circuit, and the extracted signal is compared with a reference value of various levels. A large reference value may be used as a measurement result for the band.
[0031]
[1-2-3. Display of measurement results)
Then, the means 22 for sending the measurement results sequentially sends the measurement results to the means 13 for displaying the spectrum analyzer of the center unit 1 through the bus B. The means for displaying the spectrum analyzer 13 is the signal strength for each band included in the measurement results. Is displayed on the display unit 12 in the form of a column whose height changes according to the strength.
[0032]
The column figure whose height changes according to the signal strength is called a level bar, and the level bar is displayed side by side by the same number as the band. FIG. 3 shows an example in which the measurement result is displayed using such a level bar as in the prior art. For example, this level bar has fluorescent display tubes in the form of horizontal bars arranged vertically, and is lit in order from the bottom by the number proportional to the signal strength. If becomes weaker, the upper part can be displayed by turning it off.
[0033]
By repeating such measurement and display of results every certain time interval, for example, every several tens of milliseconds, the corresponding level bar expands or contracts according to changes in signal strength for each band. And the user can grasp | ascertain the frequency characteristic of an audio | voice signal, and its transition by seeing these level bars.
[0034]
[1-2-4. (Title display)
When the title display spectrum analyzer mode is selected by the display mode selection means 17 (step 21), what sound source is currently used for the means 15 for determining the characters to be displayed from the audio control means 11, for example, Notify the frequency of the radio you are receiving. Then, the means 15 for determining the character to be displayed searches for the broadcast station name corresponding to the currently received frequency, that is, the title from the information 14 that is the basis of the display, and if there is a title (step 22) Are displayed one by one immediately above the top of the level bar for each band (step 23). A display example in this case is shown in FIG. In this example, the name of the radio station “Inter FM” is displayed. Each character displayed in this way moves up and down as the height of the level bar below the character changes. .
[0035]
[1-2-5. (Untitled display)
On the other hand, when there is no title for the currently receiving broadcast station (step 22), a predetermined display indicating that there is no title is displayed immediately above the top of the level bar for each band (step 24). . Such a display indicating that there is no title is referred to as “no title”. Here, a display example of no title is shown in FIG. In this example, 10 characters are arranged in a horizontal bar symbol such as “----------” to represent a non-title, but a non-title represents a space (blank) such as “”. ) Or other characters such as “...
[0036]
[1-3. effect〕
As described above, in the first embodiment, the frequency characteristics and the character information such as the content being listened to are displayed together, so that both can be easily recognized at a glance, and the usability of the acoustic device is improved. improves. In addition, the pleasure of enjoying audio is increased by adding a different stimulus in which the display of characters related to the content being listened to moves in accordance with the frequency characteristics of the sound, in addition to the stimulus of listening to the sound with the ear. Further, not only the frequency characteristics are displayed as in the conventional case but also there are more options for how to receive information that is displayed together with characters, so that the user's preference is satisfied.
[0037]
In the first embodiment, when the bar height changes according to the signal strength for each band, the characters on the bar move up and down together. For this reason, since the signal strength and the character information are integrated, it is easy to recognize both the frequency characteristics and the character information together. In addition, since the stimulus from the eye that is the position of the character is synchronized with the stimulus from the ear that is speech, the synergistic effect of the stimulus from the eye and the stimulus from the ear is increased, and the pleasure of enjoying the audio is enhanced.
[0038]
[2. Second Embodiment]
The second embodiment is , For example, in the case of a CD, a disc title assigned to each piece is displayed, and in the case of an MD, a disc title and a track title attached to each piece of music are switched and displayed as desired.
[0039]
[2-1. Constitution〕
First, the configuration of the second embodiment is shown in FIG. That is, the second embodiment includes an MD unit 3 in addition to the configuration of the first embodiment designated in FIG. The MD unit 3 includes means 31 for reproducing MD and means 32 for sending a title. Although the MD unit is simply used here, it is of course possible to use an MD autochanger or the like, and the same applies to the third and subsequent embodiments.
[0040]
Among them, the means 31 for reproducing the MD is a part that reads the digital audio signal recorded in the MD and sends it to the means 11 for controlling the audio of the center unit 1 by the bus B. The audio signal thus sent is In addition to being reproduced from the speaker, the signal strength for each band sent to the spectrum analyzer unit 2 is measured.
[0041]
The title sending means 32 is a means for sending the disc title for each disc read from the MD and the track title assigned to each song to the center unit 1 via the bus B. Correspondingly, in the second embodiment, the information 14 that is displayed on the center unit 1 includes a portion using a readable / writable RAM. The character information of the title sent in this way is It is stored as a part of the information 14 to be displayed.
[0042]
[2-2. Action)
FIG. 7 shows an operation procedure of the second embodiment configured as described above.
[2-2-1. (Read title)
That is, in the second embodiment, when an MD is inserted into the MD unit 3, the means 31 for reproducing the MD stores information on a management area such as a TOC (Table Of Contents) indicating the recorded contents from the MD. Read and send the recorded content to the center unit 1 to start playback. At the same time, the title sending means 32 sends the disc title recorded in the management area and the track title recorded for each song to the center unit 1 in advance, and the sent title information is displayed. Is stored as information 14.
[0043]
[2-2-2. (Select display mode)
In the second embodiment, the user selects whether to display the title display spectrum mode or not to display the title (step 41). In the title display spectrum mode, the user displays the disc title or the track title. Mode (referred to as title mode) is selected (step 42). However, in the case of a CD or the like that has a disc title but no track title, the disc title may be always displayed as the title.
[0044]
When the title display spectrum mode is selected (step 41), the means 15 for determining the character to be displayed displays the disc title or the track title as the title mode of the MD currently being played. In the disc title mode for displaying the disc title, it is judged whether or not the disc title exists in the currently playing MD (step 43).
[0045]
[2-2-3. (Display disc title)
In this case, if the disc title exists, the means 15 for determining the character to be displayed sends the disc title to the means 16 for displaying the character, and the means 16 for displaying the character displays the received disc title on the display unit 12. One character is displayed immediately above the top of the level bar for each band (step 44, FIG. 8).
[0046]
[2-2-4. (Display track title)
On the other hand, in the track title mode for displaying the track title, the means 15 for determining the character to be displayed determines whether or not the track title exists in the MD currently being played (step 46). The track title is sent to the character display means 16. In this case, the character display means 16 displays the received track title one character at a time immediately above the top of the level bar for each band displayed on the display 12 (step 47, FIG. 9). .
[0047]
[2-2-5. (Untitled display)
For the MD currently being played, when there is no disc title in the disc title mode (step 43), or when there is no track title in the track title mode (step 46), the means 15 for determining the character to be displayed 15 Informs the means 16 for displaying characters of this fact. In this case, the character display means 16 displays a non-title, which is a display indicating that there is no title, immediately above the top of the level bar for each band displayed on the display 12 (step 45, 48, FIG. 10).
[0048]
[2-3. effect〕
As described above, in the second embodiment, the title recorded on the recording medium such as the MD is displayed together with the sound reproduced from the recording medium, so that the title can be recognized together with the frequency characteristics. It will be easy.
[0049]
In the second embodiment, as a character to be displayed together with the frequency characteristic, any one of a disc title such as MD or a track title can be selected, so that information required by the user is recognized together with the frequency characteristic. It becomes easy.
[0050]
In particular, in the second embodiment, when the disc title or track title to be displayed is not recorded on the recording medium, this is displayed, so that it is not a failure for the user not to display the title. You can see it immediately and use the sound device with peace of mind.
[0051]
[3. Third Embodiment]
The third embodiment is , When the title to be displayed together with the frequency characteristics changes, as in the case of switching between broadcast stations by radio, the title is displayed at the center of the display area for a certain period of time to make it easier to see the title.
[0052]
In other words, the frequency characteristic of the audio signal always changes rapidly except when an operation such as mute is performed, and the height of the level bar for each band always changes rapidly according to this change. In this case, since it may be difficult to view the title only when it is displayed at a position corresponding to the height of the level bar, the third embodiment makes this easy to see.
[0053]
The configuration of the third embodiment is the same as that of the second embodiment shown in FIG. 6, and the operation procedure is as shown in FIG. 10 from the determination of the display mode (step 51) to the MD being played. Since the second embodiment is the same as steps 41 to 43 and 46 shown in FIG. 7 until it is determined whether or not there is a title (steps 53 and 56), differences from the second embodiment will be mainly described. .
[0054]
[3-1. (Determining characters to display)
That is, in the third embodiment, as shown in FIG. 10, whether the title is displayed together with the spectrum analyzer (step 51), and whether the title to be displayed is a disc title or a track title (step 52). Whether there is a title (steps 53 and 56) is processed in the same manner as in the second embodiment.
[0055]
However, in the third embodiment, in steps 54, 55, 57, and 58 following these determinations, the character determining means 15 only determines the contents of the characters to be displayed, and characters are still displayed on the level bar. The actual display is not performed, and the display is performed later.
[0056]
[3-2. (Judgment whether to display still)
That is, after determining the contents to be displayed, the means 16 for displaying characters has not displayed the title together with the spectrum analyzer so far, and the title display spectrum analyzer mode is selected for the first time (step 59). If the disc changes to another disc in the title display mode (step 510), or if the track being played changes in the track title display mode (step 511), the title is displayed for a certain period of time. Then, the display is stopped and displayed at the center of the display area of the display 12 (step 512).
[0057]
[3-3. (Still display)
Here, FIG. 11 shows an example in which the disc title is displayed stationary in the center of the display area, and FIG. 12 shows an example in which the track title is displayed in the same manner.
[0058]
That is, in these cases, the title to be displayed is a character that has not been displayed so far, so the character does not move from the beginning and is displayed in the display area so that it is easy to read for a certain period of time. It is displayed in a stationary state in the center. In addition, to display in a static state here means that the title characters do not have to be dizzy up and down together with the level bar. To the extent that it blinks conspicuously or moves slowly is included in displaying it at rest.
[0059]
In order to make the title easier to read while the title is displayed in a stationary manner in this way, it is desirable to stop the frequency characteristics, that is, the display of the spectrum analyzer, but it is not always necessary to stop the spectrum analyzer display. Therefore, for example, the display of the spectrum analyzer is continued, but the display elements around the stationary title may be erased or the luminance may be reduced.
[0060]
[3-4. (Title scroll)
By the way, as long as the characters of the title to be displayed can be displayed all at once as shown in FIG. 12, for example, in FIG. 11, 10 of a total of 13 level bars are selected and used for displaying the title. . In such a case, a long title such as “POWER OF DREAMS” cannot be displayed at one time but is cut off halfway. Therefore, the character display means 16 determines the number of characters in the title (step 513), and performs horizontal title scrolling so that the entire title can be read if the number of characters is 10 or more (step 514). Subsequently, when the title scroll is completed, the first 10 characters are displayed in the center (step 516).
[0061]
Here, FIG. 13 is a diagram illustrating an example in which a portion closer to the back of the title is displayed as a result of scrolling the title “POWER OF DREAMS” in the above-described example in the direction of flowing from right to left. is there. However, the case where the number of characters is 10 or more is merely an example, and it means that scrolling is performed if the number of characters is larger than a predetermined number of 9 characters or 12 characters. Furthermore, the title scrolling itself is not necessarily a requirement of the present invention. is not.
[0062]
[3-5. effect〕
As described above, in the third embodiment, not only the characters move up and down according to the level bar that expands and contracts rapidly, but also the characters are displayed for a while when the characters change, so that the characters are easy to read. . In the third embodiment, since the number of characters to be displayed is large, even if the whole cannot be displayed at once, the characters are scrolled and displayed, so that the whole can be read.
[0063]
[4. Fourth Embodiment]
The fourth embodiment is , The frequency characteristic is displayed by changing the character itself for displaying the title. The configuration and operation procedure of the fourth embodiment are almost the same as those of the third embodiment. However, in the fourth embodiment, as shown in FIG. 14, the position where the title is statically displayed is not the center of the display area but the lower portion. (Step 612) In addition, the title is not displayed on the level bar for each band, but the frequency characteristic is displayed by the title character itself (Step 615).
[0064]
Here, FIG. 15 shows an example in which the title is displayed stationary at the lower part of the display area of the display 12. In order to display the frequency characteristics with the title characters themselves, for example, as shown in FIG. 16, it is considered that the level bar is displayed by vertically stacking the characters by the number corresponding to the signal strength for each band. It is done. Further, as shown in FIG. 17, it is conceivable to display characters with a size corresponding to the strength of the signal after the band. In these cases, if the title contains a blank (space), the signal strength of the band corresponding to the blank can be displayed by inserting an appropriate character such as “*” at that position. .
[0065]
As described above, in the fourth embodiment, the frequency characteristics are displayed by the characters themselves, for example, by stacking the characters to form a level bar or changing the size of the characters, so that both the frequency characteristics and the characters can be recognized at a time. It will be easy. In addition, since the frequency characteristic is displayed by using characters themselves, the user's preference is satisfied.
[0066]
[5. Fifth Embodiment]
The fifth embodiment , Even if the external interrupt device connected to the sound device does not send the character to be displayed together with the signal strength and only interrupts it, it displays that there was an interrupt.
[0067]
[5-1. Constitution〕
The configuration of the fifth embodiment is shown in FIG. As shown in this figure, the fifth embodiment includes an AUX unit 4 in addition to the configuration of the first embodiment shown in FIG. The AUX unit 4 is a device that provides some kind of sound source. For example, the AUX unit 4 accepts an incoming call from a mobile phone and plays a voice from an in-vehicle speaker so that the driver can use the phone in a so-called hands-free manner without holding the phone by hand. The unit is considered. The AUX unit 4 may be, for example, a car navigation system having a function of transmitting information to the driver with synthesized voice, a voice output circuit of a TV tuner, or the like.
[0068]
Further, since this AUX unit 4 is connected to the center unit 1 using a remote signal instead of the bus B, it is assumed that character information such as a title cannot be sent to the center unit 1. The AUX unit 4 includes means 41 for interrupting and means 42 for sending an audio signal.
[0069]
Among them, the means 41 for interrupting causes the center unit 1 to flow the audio signal sent from the speaker by generating an external interrupt when the AUX unit 4 tries to send an audio signal to the center unit 1. It is a part to be operated. The audio signal sending means 42 is a part for sending an audio signal from any sound source of the AUX unit 4 to the center unit 1 by using, for example, an analog signal cable in order to flow the audio signal from the center unit 1 to the speaker. is there.
[0070]
On the other hand, in the center unit 1, the audio control means 11 is configured to receive an audio signal sent from the audio signal sending means 42 of the AUX unit 4, and an interrupt receiving means 19 is provided. ing. The means 19 for accepting the interrupt notifies the means 11 for controlling the audio that the interrupt has occurred when the external interrupt signal generated by the means 41 for interrupting the AUX unit 4 is received. This is the part that receives the audio signal from and sends it to the speaker.
[0071]
At the same time, the means 19 for accepting the interrupt has a role of notifying the means 15 for determining the character to be displayed and the means 16 for displaying the character when there is an interrupt. Further, in the fifth embodiment, when the means 15 for determining the character to be displayed is informed that there has been an interruption from the means 19 for accepting an interruption, a predetermined character indicating that the interruption has occurred is signaled. It is configured to be determined as a character to be displayed together with the strength of.
[0072]
[5-2. Action)
[5-2-1. Interrupt generation)
In the fifth embodiment configured as described above, for example, when the user performs an operation on the AUX unit 4 to listen to the sound source held by the AUX unit 4 or when a call arrives at the AUX unit 4 Sometimes, the means 41 for interrupting the AUX unit 4 interrupts the center unit 1, and the means 42 for sending an audio signal starts sending an audio signal to the center unit 1.
[0073]
On the other hand, FIG. 19 shows a processing procedure performed in the center unit 1. This procedure indicates what kind of processing is performed in a mode in which an event is displayed on the display device 12 when an interrupt occurs. Such a mode is called an interrupt mode display spectrum analyzer.
[0074]
As a premise of this procedure, first, when the interrupt accepting means 19 accepts an interrupt from the AUX unit 4, the center unit 1 is in a mode for processing an audio signal from an external interrupt device. The operation state of the center unit 1 in a state where an external interrupt is received in this way is called an external interrupt mode. In this external interrupt mode, the AUX unit 4 is in operation, and the means 42 for sending the audio signal of the AUX unit 4 sends the audio signal to the center unit 1. Correspondingly, the audio control means 11 is in a state of receiving and processing the audio signal from the audio signal sending means 42 of the AUX unit 4.
[0075]
At this time, since the AUX unit 4 does not transmit characters such as a title to be displayed together with the signal strength, “−−−−−−−−−−” (horizontal bar “−” indicating that there is no title. When the titleless display such as “10 characters” is performed, the display is the same as that shown in FIG. 5 (FIG. 20), and the user cannot know how the center unit 1 is operating. There arises a problem of worrying about a malfunction.
[0076]
[5-2-2. (Display in external interrupt mode)
However, in the fifth embodiment, it can be displayed that the device is operating in the external interrupt mode according to the procedure shown in FIG. That is, in this procedure, when the title display spectrum mode is selected (step 81), the means 15 for determining the character to be displayed first determines whether the center unit 1 is operating in the state of receiving an external interrupt. Judgment is made (step 82).
[0077]
When it is determined in step 82 that the external interrupt mode is selected, the means 15 for determining the character to be displayed indicates a predetermined character such as “AUX” indicating the external interrupt mode together with the signal strength. Is determined as a character to be displayed on the screen and passed to the means 16 for displaying the character. Then, the character display means 16 assigns a character such as “AUX” one by one to several level bars for each band, and displays them just above the top of the level bar as shown in FIG. (Step 83).
[0078]
That is, even if the AUX unit 4 does not send a character such as a title, instead of displaying “----------” indicating that there is no title, it indicates that an interruption has occurred. A character such as “AUX” is displayed on the display 12.
[0079]
[5-2-3. (Display when not in external interrupt mode)
On the other hand, if it is determined in step 82 that the external interrupt mode is not set, the means 15 for determining the character to be displayed broadcasts the center unit 1 to the currently receiving frequency in the normal radio tuner mode for receiving radio, for example. Determine if there is a station title. As a result, if there is a title, the means 15 for determining the character to be displayed passes the title to the means 16 for displaying the character, and the means 16 for displaying the character displays the title immediately above the top of the level bar of each band. Are displayed one by one (step 85, FIG. 4).
[0080]
Further, when there is no title, the means 15 for determining the character to be displayed is a character string for displaying a character such as "----------" indicating that there is no title. Passing and character display means 16 displays each character of such a title-less display immediately above the top of the level bar of each band (step 86, FIG. 20).
[0081]
[5-3. effect〕
As described above, in the fifth embodiment, even if an external interrupt device issues an external interrupt without transmitting a character to be displayed together with the signal strength, the audio device that received the interrupt determines in advance. The displayed character indicates that an external interrupt has been received. For this reason, the user can easily know that it is an external interrupt rather than a failure, and can use the sound device with peace of mind.
[0082]
[6. Other Embodiments]
The present invention is not limited to the embodiment described above, and includes other embodiments as exemplified below. For example, in each of the embodiments described above, an example in which the spectrum analyzer unit 2, the MD unit 3, and the AUX unit 4 are connected to the center unit 1 having the functions of a CD player and a radio tuner has been described. The units may be grouped in the unit, and each unit may be connected by other types of lines such as RS-232C and optical fiber instead of the bus.
[0083]
In each of the above-described embodiments, the character is displayed at the end of the level bar that expands or contracts. However, the character can also be displayed in the middle of the level bar. Becomes narrower and the text becomes easier to read.
[0084]
Further, in each of the embodiments described above, the level bar displayed on the display device has been shown to expand and contract only upward, but the width extends from the center in the vertical direction of the display area to both the top and bottom. You can also use a level bar that changes as it gets thicker or thinner. In this case, the text information may be displayed above or below the level bar, and when displayed at the bottom, “top” in each bar is read as “bottom” And Further, the user may be able to select which of the upper side of the bar is to display characters.
[0085]
Further, only one of the disc title and the track title may be displayed. A recording medium that records a computer program that implements the functions of the present invention is also an aspect of the present invention.
[0086]
【The invention's effect】
As described above, according to the present invention, both the frequency characteristic and the character information are displayed together so that both are easily recognized, the usability of the acoustic device is improved, and the user's preference is satisfied.
[Brief description of the drawings]
FIG. 1 is a functional block diagram showing a configuration of a first embodiment of the present invention.
FIG. 2 is a flowchart showing an operation procedure according to the first embodiment of the present invention.
FIG. 3 is a diagram showing a display example according to the first embodiment of the present invention (when no characters are displayed).
FIG. 4 is a diagram showing a display example (when displaying characters) in the first embodiment of the present invention.
FIG. 5 is a diagram showing a display example (no title display) in the first embodiment of the present invention.
FIG. 6 is a functional block diagram showing a configuration of a second embodiment of the present invention.
FIG. 7 is a flowchart showing an operation procedure according to the second embodiment of the present invention.
FIG. 8 is a diagram showing a display example according to the second embodiment of the present invention (when a disc title is displayed).
FIG. 9 is a diagram showing a display example in the second embodiment of the present invention (when a track title is displayed).
FIG. 10 is a flowchart showing an operation procedure according to the third embodiment of the present invention.
FIG. 11 is a diagram showing a display example according to the third embodiment of the present invention (when a disc title is displayed stationary).
FIG. 12 is a diagram showing a display example in the third embodiment of the present invention (when a track title is displayed stationary).
FIG. 13 is a diagram showing a display example according to the third embodiment of the present invention (when a disc title is scrolled and displayed).
FIG. 14 is a flowchart showing an operation procedure according to the fourth embodiment of the present invention.
FIG. 15 is a diagram showing a display example according to the fourth embodiment of the present invention (when a disc title is displayed at the bottom of the display area).
FIG. 16 is a diagram showing a display example in the fourth embodiment of the present invention (when a level bar is displayed by vertically stacking disc title characters);
FIG. 17 is a view showing a display example in the fourth embodiment of the present invention (when the frequency characteristic is displayed by changing the size of the character of the disc title).
FIG. 18 is a functional block diagram showing a configuration of a fifth embodiment of the present invention.
FIG. 19 is a flowchart showing an operation procedure of the fifth embodiment of the present invention.
FIG. 20 is a diagram showing a display example (no title display) in the fifth embodiment of the present invention.
FIG. 21 is a diagram showing a display example according to the fifth embodiment of the present invention (when displaying a character representing an external interrupt).
[Explanation of symbols]
1 ... Center unit
11: Means for controlling audio
12 ... Display
13: Means for displaying spectrum analyzer
14 ... Information to be displayed
15 ... Means for determining the character to be displayed
16: Means for displaying characters
17: Means for selecting display mode
18 ... operation part
2 ... Spare unit
21. Means for measuring signal strength
22: Means for sending measurement results
3 ... MD unit
31. Means for reproducing MD
32. Means to send title
4 ... AUX unit
41. Means for interrupting
42. Means for sending audio signal

Claims (3)

Means for playing audio,
Means for reading the title corresponding to the audio being played,
Means for measuring signal strength for each of a plurality of frequency bands included in a changing audio signal;
Means for displaying the measured signal strength for each band in a level bar, and displaying the title characters one by one at the tip of the level bar for each band;
An acoustic device comprising: Playing audio, and
Reading the title corresponding to the audio being played,
Measuring signal strength for each of a plurality of frequency bands included in a changing audio signal;
Displaying the measured signal strength for each band in a level bar, and displaying the title character one character at the end of the level bar for each band; and
A method for controlling an audio device, comprising: A program for controlling an audio device, the program being
Play the sound,
Read the title corresponding to the audio being played,
The signal strength is measured for each of the multiple frequency bands included in the changing audio signal,
A control program for an audio device, wherein the strength of the measured signal is displayed in a level bar for each band, and the title character is displayed one by one at the tip of the level bar for each band.

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