JP4281601B2 - Information communication system, communication karaoke terminal, distribution host device and program - Google Patents

Description

  The present invention relates to a technology for adjusting a sound pressure frequency characteristic in a reproduction sound field of each terminal device in an information communication system in which a distribution host device and a plurality of terminal devices can communicate with each other via a communication line. .

  In the so-called online karaoke system, the actual situation is that the environment in which a karaoke terminal is installed and the music data is actually reproduced and played is not uniform. Even if it is a karaoke box (room), the shape, size, and wall material are all different. Therefore, the sound pressure frequency characteristic (hereinafter referred to as the target sound pressure frequency characteristic) when the music data is produced and the sound pressure frequency characteristic in the reproduction environment such as in a karaoke box (hereinafter referred to as the reproduction sound pressure frequency characteristic). ), And the sound state intended by the music data producer cannot be reproduced sufficiently.

As a method for correcting the acoustic characteristics of such a terminal located in a remote place, for example, a voice communication conference system apparatus disclosed in Patent Document 1 can be cited. This voice communication conference system apparatus is a server for storing the measurement data of the acoustic characteristics of a remote terminal in a voice communication conference system in which terminals distributed in remote locations are connected by voice lines so that mutual voices can be communicated simultaneously. Concentrate on the server, analyze the concentrated measurement data at the server, calculate the correction data of the transmission and reception characteristics required at the location where each terminal is installed, distribute the calculated correction data to each terminal, The terminal performs correction of transmission / reception characteristics based on the distributed data.
Japanese Patent No. 3347664

  According to the technique disclosed in Patent Document 1 described above, the measurement data of the acoustic characteristics of the terminal is sent to the server side, and the correction value of each terminal is calculated on the server side. In the case of a voice communication conference system as envisaged by the technology disclosed in Patent Document 1, if the number of terminals is relatively small and about several, such correction may not be a substantial problem. .

However, when this technology is applied to a communication karaoke system, the following various problems arise.
(1) First, in a karaoke system in which the number of terminals has to be relatively large, for example, several tens of thousands, if the correction values for all these terminals are calculated on the server side, the processing load on the server side is great. It will be something. Also, if the terminal is in the later processing order, it must wait for a long time before receiving correction value distribution.

(2) The process of uploading the measurement data of the own terminal to the server and receiving the distribution of the correction value from the server is generated by the number of terminals, and the communication load is also great.
(3) The process of calculating the correction value based on the measurement data of the acoustic characteristics of the terminal generally includes a series of correction parameters slightly changed → measurement data acquisition → correction parameter slightly change based on measurement data → measurement data acquisition. It is necessary to repeat the process. However, in the conventional method, since the correction parameter is calculated by the server, the measurement data upload from the terminal to the server and the correction parameter download from the server to the terminal are repeatedly performed, which further increases the communication load. End up.

  (4) When, for example, a public switched telephone network (PSTN) is used for communication between a server and a terminal, there is a problem in which of the server or terminal is called. When constructed, the acoustic characteristics cannot be corrected at an arbitrary timing on the terminal side.

  Therefore, the present invention provides an information communication system configured such that a distribution host device and a plurality of terminal devices can communicate with each other via a communication line, and each of the sound pressure frequency characteristics in a reproduction sound field of each terminal device is targeted. It is an object of the present invention to make it possible to easily and appropriately realize the work for matching the sound pressure frequency characteristics.

  The present invention, which has been made to solve the above-described problems, includes a distribution host device and a plurality of terminal devices, and is configured such that the distribution host device and the terminal device can communicate information with each other via a communication line. The present invention relates to an information communication system. The terminal device of the present invention adjusts the gain value of the equalizer so that the sound pressure frequency characteristic in the reproduction sound field matches the target sound pressure frequency characteristic and the equalizer that can change the gain value in order to change the sound pressure frequency characteristic. Gain value adjusting means. Then, the distribution host device distributes gain value data specifying the target sound pressure frequency characteristic to the terminal device. In the terminal device that has received the distribution of the gain value data specifying the target sound pressure frequency characteristic, the gain value adjusting means adjusts the gain value of the equalizer based on the gain value data specifying the target sound pressure frequency characteristic.

  Note that this equalizer generally has a configuration capable of changing the gain value for each of the frequency bands divided into a plurality of frequency bands in order to change the sound pressure frequency characteristics. For example, the one that can change the gain value for each of the 15 frequency bands is called a 15-band equalizer. When such an equalizer is used, gain value data for specifying the target sound pressure frequency characteristic is similarly set for each of the frequency bands divided into a plurality.

  When adjusting the gain value of the equalizer by this gain value adjusting means, for example, a noise signal such as pink noise is output and generated from a speaker or the like, picked up by a microphone, frequency-analyzed, and the sound pressure frequency characteristic is manually specified. Measure the gain value. Then, a correction value is calculated from the difference between the gain value specifying the measured sound pressure frequency characteristic and the gain value specifying the target sound pressure frequency characteristic, and the gain value of the equalizer is adjusted based on the correction value. Since the terminal device performs such correction value calculation, for example, an information communication system in which tens of thousands of terminal devices are connected to one distribution host device can provide a very remarkable effect. . That is, in the conventional method, the correction value of each terminal device is calculated on the distribution host device side. However, in the present invention, since the correction value calculation is not performed in the distribution host device, no processing load is applied. Further, in the conventional method, since it is necessary to receive the distribution of the correction value calculated for each terminal device in the distribution host device, in the terminal device whose processing order is later, it is long until the correction value is received. I had to wait. On the other hand, in the case of the present invention, if the target sound pressure frequency characteristic data is received from the distribution host device, the subsequent adjustment work is completed by the terminal device.

  In addition, the communication load is significantly reduced. If it is a conventional method, the measurement data obtained by the terminal device is uploaded to the distribution host device, the correction value is calculated by the distribution host device based on the measured data, downloaded to the terminal device, and the measurement corresponding to the correction value is performed. It was necessary to repeat the process of uploading data from the terminal device to the distribution host device for each terminal device, but if this was executed for each tens of thousands of terminal devices, the communication load would be enormous. Become. On the other hand, in the case of the present invention, it is only necessary to distribute gain value data specifying the target sound pressure frequency characteristic from the distribution host device to each terminal device, and the subsequent adjustment work is completed by the terminal device. Uploading from the terminal device to the distribution host device does not occur for work. Needless to say, no download occurs for the upload, which is very effective in reducing communication load.

  As a communication line between the distribution host device and the terminal device, a public switched network (PSTN) or the Internet can be used. For example, when a general public line network is used, the following problems arise if the conventional method is used. That is, since the adjustment operation itself requires communication between the distribution host device and the terminal device, if a server side call system is constructed, the adjustment operation at an arbitrary timing on the terminal device side cannot be realized. On the other hand, in the case of the present invention, even if a system that makes a call from either a server or a terminal is adopted, if the target sound pressure frequency characteristic data can be distributed, the adjustment work is completed in the terminal device after that. The adjustment work can be executed at an arbitrary timing on the terminal device side.

  The information communication system of the present invention can be applied to any system that requires adjustment of sound pressure frequency characteristics in the terminal device, but as the number of terminals increases as described above, the distribution host device This is advantageous in terms of reducing processing load and communication load. In that sense, it is a very effective invention for a so-called online karaoke system. In the case of the online karaoke system, the terminal device includes data storage means for storing music data and music playback means for playing back music based on the music data stored in the data storage means. With regard to this music data, for example, music data related to new music is often distributed regularly or irregularly from the distribution host device to the terminal device. Therefore, it is conceivable that the distribution control means of the distribution host device distributes the gain value data specifying the target sound pressure frequency characteristics when distributing the music data to the terminal device.

  The gain value adjustment described above is mainly performed based on the difference in the reproduction sound field environment in which the terminal device is installed, so to speak, it is a general-purpose sound pressure frequency characteristic adjustment. Therefore, as described above, adjustment is performed by generating pink noise or the like. However, when the music is actually reproduced, it is not so that the same gain value adjustment is optimal for any music. It may be better to fine tune depending on the tune.

Therefore, a device for fine adjustment will be described.
First, it is conceivable to add gain value data for fine adjustment for each piece of music data. Specifically, the distribution control means of the distribution host device distributes the fine adjustment gain value data set for each song in association with the song data. In the terminal device, the fine adjustment gain value data distributed from the distribution host device is stored in the data storage means in association with the music data. Then, when the music reproducing means of the terminal device performs the music reproduction, if there is fine adjustment gain value data corresponding to the music in the data storage means, the music corresponding fine adjustment gain value data is reflected. The music is played after changing the gain value for changing the sound pressure frequency characteristics by the equalizer, and when the music playback is finished, the equalizer is controlled so that the gain value specifies the target sound pressure frequency characteristics before playback. To do.

  Further, fine adjustment gain value data set for each genre may be used. Specifically, genre data indicating the correspondence between the genre of music and the corresponding fine adjustment gain value is stored in the data storage means of the terminal device. This genre data may be distributed from a distribution host device, or may be stored in the data storage means by a manual operation by an installation operator when the terminal device is installed, for example. When the music reproducing means of the terminal device performs the music reproduction, if there is fine adjustment gain value data corresponding to the genre of the music in the data storage means, the gain value data for the genre corresponding fine adjustment The music is played after changing the gain value for changing the sound pressure frequency characteristic by the equalizer so that is reflected, and when the music playback is finished, the equalizer is set to the gain value that identifies the target sound pressure frequency characteristic before playback. To control.

By doing so, music reproduction is performed with more appropriate sound pressure frequency characteristics.
It is also conceivable that both fine adjustment gain value data corresponding to music and fine adjustment gain value data corresponding to the genre exist. In this case, the gain value adjusting means of the terminal device calculates the gain value of the equalizer based on the gain value data specifying the target sound pressure frequency characteristic received from the distribution host device by the reception control means before playing the music. Adjust it. Then, when the music playback means of the terminal device performs the music playback, if there is fine adjustment gain value data corresponding to the music in the data storage means, the gain value data for the music corresponding fine adjustment is reflected. The music reproduction is performed after changing the gain value for changing the sound pressure frequency characteristics by the equalizer, and there is no fine adjustment gain value data corresponding to the music, and the music is stored in the data storage means. If there is fine adjustment gain value data corresponding to the genre, the gain value for sound pressure frequency characteristic change by the equalizer is changed so that the gain value data for fine adjustment corresponding to the genre is reflected. When reproduction is performed and the reproduction of the music is completed, the equalizer is controlled so as to obtain a gain value for specifying the target sound pressure frequency characteristic before reproduction . This is because the gain value data for fine adjustment corresponding to music has a gain value that allows fine adjustment according to the music.

  By the way, the target sound pressure frequency characteristic data does not need to be one type, and a plurality of types may exist. In that case, it is preferable to set gain value data for specifying the target sound pressure frequency characteristic corresponding to a predetermined condition, and the distribution control means of the distribution host device distributes the gain value data corresponding to the condition. The gain value data for specifying a certain target sound pressure frequency characteristic does not always give an absolute optimum evaluation for everyone. Finally, there are aspects that are left to the user's subjectivity. The gain value data for specifying the target sound pressure frequency characteristic here is, for example, karaoke music, and the creator of the karaoke music thinks that “sound pressure frequency characteristics like this are preferable”. Sound pressure frequency characteristics. Therefore, the music producer responded to each by taking into account the singer's age group and regional characteristics, or the karaoke terminal's singers and owners' musical preferences (for example, preferences such as rock lovers and enka lovers). It is also conceivable to determine gain value data for specifying the recommended sound pressure frequency characteristic (that is, the target sound pressure frequency characteristic). Therefore, if a plurality of gain value data determined as described above is distributed to a terminal device suitable for each, more appropriate adjustment is realized. Three examples will be described.

  For example, gain value data for specifying the target sound pressure frequency characteristic is set in correspondence with the singer's age group. And in a terminal device, the data input which specifies a singer's age group is received by a reception means, and a notification means notifies the host apparatus for delivery to the singer's age group obtained based on the received singer's age group specification data. . Note that the accepting means may be an operation panel, for example, and it is conceivable that the user operates the operation panel to input a numerical value for specifying the singer age group. Then, the distribution control means of the distribution host device distributes gain value data for specifying the target sound pressure frequency characteristic corresponding to the singer age group notified from the distribution destination terminal device.

  Similarly, it is conceivable that the gain value data for specifying the target sound pressure frequency characteristic is set corresponding to the region or set corresponding to the musical taste of the terminal user classified in advance. Even in the case of the regional or terminal user's musical preference, the user inputs the address, zip code, music genre lock, enka, etc. for specifying the region to the terminal device by operating the operation panel. Can be considered. However, in the case of musical preference, it can also be determined, for example, according to the performance results. In the case of karaoke songs, it is easy to grasp the genre for each song. The distribution host device may be notified that the target preference is enka. Also in the case of a region, for example, if the terminal device includes a positioning system such as GPS, the current position information measured by the terminal device may be received by the receiving unit.

The above is the description of the invention as an information communication system, but it can also be realized as an invention as a terminal device or a distribution host device which is an element constituting these information communication systems. For example, the communication karaoke terminal according to claim 9 corresponds to an application of the terminal device constituting the information communication system according to claim 1 to the communication karaoke terminal. Furthermore, the communication karaoke terminal according to claim 10 is the communication karaoke terminal according to claim 9, wherein the target sound received from the distribution host device by the reception control means before the music to be played is selected. The gain value of the equalizer is adjusted based on the gain value data specifying the pressure frequency characteristic.

When the gain value adjusting means, music reproduction means, and notification means provided in the terminal device are realized by a computer, the invention as a program executed by the computer provided in the terminal device as described in claims 7 and 8 Can be caught. Such a program is recorded on a computer-readable recording medium such as a flexible disk, a magneto-optical disk, a CD-ROM, a hard disk, a ROM, or a RAM, and is loaded into a computer for execution as necessary. These functions as each means can be realized by loading and executing the program.

  Embodiments to which the present invention is applied will be described below with reference to the drawings. The embodiments of the present invention are not limited to the following examples, and can take various forms as long as they belong to the technical scope of the present invention.

FIG. 1 is a block diagram showing a configuration of a communication karaoke system as an embodiment of an information communication system.
In the communication karaoke system of this embodiment, a communication karaoke terminal 1 as a terminal device and a distribution host device 100 are connected via a general public network (PSTN) or the Internet 90, and the communication karaoke system is connected to the communication karaoke terminal 100 from the distribution host device 100. Various types of information are distributed to the terminal 1. The communication karaoke terminal 1 and the distribution host device 100 may be connected via the Internet. Although only one communication karaoke terminal 1 is shown in FIG. 1, a large number (for example, a level such as tens of thousands) of communication karaoke terminals 1 are connected.

  The distribution host device 100 includes a CPU 101, a ROM 102, a RAM 103, a hard disk storage device (HDD) 104, a communication control unit 105, and the like that control the operation of the entire device. The hard disk storage device (HDD) 104 stores song data and target gain value data to be distributed to the communication karaoke terminal 1. This target gain value will be described in detail later. The communication control unit 105 is connected to the communication karaoke terminal 1 via a general public line network or the Internet 90.

On the other hand, the communication karaoke terminal 1 is roughly provided with a main control unit 10 and a voice processing unit 20.
[Configuration of Main Control Unit 10]
In the main control unit 10, a modem 12, a RAM 13, a hard disk storage device (HDD) 14, an operation panel 15, and a video processing unit 16 are connected to a CPU 11 that controls the operation of the entire main control unit 10 via a bus.

The modem 12 is connected to the distribution host device 100 via a general public line network or the Internet 90.
The hard disk storage device 14 stores a system program, an application program, and the like for controlling the operation of the communication karaoke terminal 1, and when the communication karaoke terminal 1 is turned on and a startup program is executed, these programs are stored. Is read into the RAM 13. Alternatively, the disk storage device 14 includes an area for storing the above-described program, an area for storing song data for performing karaoke performance, an area for storing target gain value data, an area for storing measured gain values, and the like. I have. The target gain value data is distributed from the distribution host device 100 described above.

  The operation panel 15 is provided on the front surface of the communication karaoke terminal 1 and includes a song code input switch, a key change switch, or a 7-segment LED for displaying an input song code or the like.

  The video processing unit 16 combines the lyrics data with the background video data included in the song data or separately stored in the hard disk storage device 14 and displays the synthesized lyrics data on the monitor 30. Of course, other contents can be displayed.

[Configuration of Audio Processing Unit 20]
The sound processing unit 20 is connected to a CPU 21 that controls the operation of the entire sound processing unit 20 through a bus, a ROM 22, a RAM 23, a sound source unit 24, a 15-band equalizer (hereinafter simply referred to as an equalizer) 25, a voice effect unit 26, A frequency analysis unit 27 is connected.

  The CPU 21 of the audio processing unit 20 and the CPU 11 of the main control unit 10 are connected by USB (Universal Serial Bus). Therefore, target gain value data stored in the hard disk storage device 14 of the main control unit 10 is acquired via the CPU 11 of the main control unit 10 and stored in the RAM 23 in the processing described later. The ROM 22 stores an application program for controlling the operation of the sound processing unit 20.

  The tone generator 24 forms a (digital) tone signal based on the tone track data of the song data. The song data is read from the hard disk storage device 14 by the CPU 21 of the voice processing unit 20 via the CPU 11 of the main control unit 10 during karaoke performance. The tone track is composed of a plurality of tracks, and the tone generator 24 forms a plurality of part tone signals simultaneously based on this data. The musical sound signal formed by the sound source unit 24 is karaoke performance sound, and these are input to the equalizer 25. The equalizer 25 gives a predetermined acoustic effect to the karaoke performance sound. Specifically, the equalizer 25 divides the frequency band of 20 Hz to 20 kHz into 15 bands, and the sound of each frequency band. The gain value with respect to the pressure is changed in the range of −12 dB to +12 dB. The (digital) musical sound signal whose sound pressure frequency characteristic has been changed by the equalizer 25 is converted into an analog signal via a DA converter (not shown), mixed with a singing voice signal to be described later, and output to the speaker 40 which is an external device. Is done.

  On the other hand, a singing voice signal or sound signal input from a singing microphone 50 which is an external device is amplified by a microphone amplifier (not shown) and converted into a digital signal via an AD converter (not shown) to obtain a voice effect. To the unit 26 and the frequency analysis unit 27. The voice effect unit 26 gives an acoustic effect such as echo to the singing voice signal and outputs it. The singing voice signal output from the voice effect unit 26 is mixed with the musical sound signal and output to the speaker 40 as described above. Note that the voice effect unit 26 can be configured not to output a signal to the speaker 40. This is for the following reason. That is, when adjusting the sound pressure frequency characteristic of the reproduction sound field, so-called pink noise is generated from the sound source unit 24, pink noise generated from the speaker 40 is input by the microphone 50, and the frequency analysis unit 27 performs frequency conversion. To analyze. In this case, if the sound signal (pink noise) input by the microphone 50 is output from the speaker 40 again, inconvenience occurs. Therefore, when adjusting the sound pressure frequency characteristic, a signal is not output from the voice effect unit 26 to the speaker 40.

  The frequency analysis unit 27 performs frequency analysis on the input sound signal (pink noise) by FFT. In the present embodiment, like the 15 frequency bands in the equalizer 25, the frequency band of 20 Hz to 20 kHz is divided into 15 bands (bands), and the sound pressure in each frequency band is analyzed.

[Explanation of target gain value, measurement (gain) value, equalizer gain value]
In the communication karaoke system of this embodiment, not only can the karaoke performance be executed at the communication karaoke terminal 1, but also the sound pressure frequency characteristics can be adjusted according to the environment in which the communication karaoke terminal 1 is installed. First, the necessity for such adjustment of the sound pressure frequency characteristic will be briefly described.

  In the online karaoke system, the actual situation is that the environment in which the online karaoke terminal 1 is installed to play and play music data is not uniform. Even if it is a karaoke box (room), the shape, size, and material of the walls vary greatly. For this reason, the sound pressure frequency characteristic (target sound pressure frequency characteristic) when the music data is produced and the sound pressure frequency characteristic (reproduced sound pressure frequency characteristic) in the reproduction environment such as in a karaoke box are greatly different. The sound condition intended by the creator cannot be reproduced sufficiently.

  For example, FIG. 2 shows a sound pressure frequency characteristic measurement state in an environment used to determine the sound quality that the data producer considers optimal when producing music data. FIG. 2A shows the positional relationship between a karaoke commander (a device corresponding to the communication karaoke terminal 1), a monitor, a power amplifier, a stand on which they are mounted, a speaker, a measurement microphone, and a room in which they are installed. The case when viewed from the side is schematically shown. FIG. 2B schematically shows the positional relationship of these devices as viewed from above. In FIG. 2, the room itself is a rectangular parallelepiped, and the karaoke commander (a device corresponding to the communication karaoke terminal 1), the monitor, the power amplifier, the stand, and the speaker are arranged near the wall, and the measurement microphone is near the center of the room. Is arranged. The sound emitted from the speaker reaches the measurement microphone as direct sound and also as reflected sound reflected from the wall surface.

  On the other hand, FIG. 3 shows a sound pressure frequency characteristic measurement state when correction is performed in the communication karaoke terminal 1, and FIG. 3A shows a karaoke commander (in this case, communication). The karaoke terminal 1 itself), the monitor 30, the power amplifier, the stage on which they are mounted, the speaker 40, the (measurement) microphone 50, and the case where the room in which they are installed is viewed from the side. FIG. 2B schematically shows a case where the positional relationship of these devices is viewed from above.

  The room shown in FIG. 3 is different from the room shown in FIG. 2 in the shape of the ceiling and is not a rectangular parallelepiped. Therefore, the state of the reflected sound reflected by the wall surface is different from the case of FIG. And the position of the microphone 50 is different from the case of FIG. 2, and it is far from the place where the communication karaoke terminal 1 grade | etc., Was set rather than the case of FIG. That is, the state of the direct sound reaching from the speaker 40 is also different from the case of FIG. FIG. 2 is merely an example of a room in which the communication karaoke terminal 1 is installed. The room is installed in a room having various shapes, and the positional relationship between the apparatuses is different.

  Therefore, for example, the gain value (target gain value) for specifying the sound pressure frequency characteristic that is the optimum sound quality set in the “environment used to determine the sound quality considered optimal by the data producer” shown in FIG. Assume that the waveform (gain value) is as shown in FIG. For ease of understanding, FIG. 4A shows a flat waveform in which the gain values of all 15 bands are 0 dB. However, there is no need for a flat waveform, and the setting is made in the environment shown in FIG. The gain value itself that provides the optimum sound quality is set as the target gain value.

  On the other hand, the gain value (measurement gain value) for specifying the sound pressure frequency characteristic measured in the environment where the communication karaoke terminal 1 shown in FIG. 3 is installed has a waveform (gain value) as shown in FIG. Suppose there was. Since this measured gain value deviates from the target gain value shown in FIG. 4A, the equalizer 25 changes (adjusts) the gain value of the equalizer 25 so that they match. An example of the gain value of the equalizer 25 is shown in FIG. In the equalizer 25, the gain value in each of the 15 bands is determined by the bisection method, which is one of the approximate calculation methods, using the target gain value and the measured gain value, or the measured gain value is subtracted from the target gain value. To get it. Note that, if the gain value of one band is corrected, there is an effect on the other bands. Therefore, correction is repeatedly performed for each of the 15 bands and finally matched (or approximated) to the target gain value.

  In this embodiment, the distribution host device distributes gain value (target gain value) data for specifying the target sound pressure frequency characteristic to each communication karaoke terminal 1, and each communication karaoke terminal 1 actually installs the terminal. In this environment, pink noise is generated from the sound source unit 24 to measure a gain value indicating sound pressure frequency characteristics, and an equalizer is determined based on the difference between the measured gain value (measured gain value) and the above-described target gain value. The gain value at 25 is changed (adjusted) to a value according to the reproduction environment. In other words, the gain value of the equalizer 25 is changed (adjusted) so that the measured value in the state where the gain value specifying the sound pressure frequency characteristic is adjusted and sounded by the equalizer 25 matches the above-described target gain value. .

[Explanation of operation executed in communication karaoke terminal 1]
Next, the operation performed in the communication karaoke system of the present embodiment will be described.
FIGS. 5 to 8 are flowcharts showing the processes executed in the communication karaoke terminal 1, which are processes (FIG. 5), start-up processes (FIG. 7), music selection / performance processes related to measurement and setting of the sound pressure frequency characteristics, respectively. It is a flowchart which shows (FIG. 8). These processes are executed jointly by the CPU 11 of the main control unit 10 and the CPU 21 of the sound processing unit 20. Hereinafter, it demonstrates in order.

[Measurement and setting processing of sound pressure frequency characteristics]
In the first step S10 in the flow chart of the sound pressure frequency characteristic measurement and setting process shown in FIG. 5, it is determined whether or not there is a mode switching input via the operation panel 15. This determines whether there is an input indicating an instruction to switch from the karaoke mode to the characteristic setting mode. If there is no mode switching input (S10: No), the determination of S10 is repeated, and if there is a mode switching input (S10: Yes), it is determined whether or not the target gain value exists in the hard disk storage device 14 (S20). ). If the target gain value does not exist in the hard disk storage device 14 (S20: No), the process returns to S10, but if the target gain value exists in the hard disk storage device 14 (S20: Yes), the process proceeds to S30.

  In S30, the karaoke mode is terminated and the characteristic setting mode is entered. In the next S40, notes such as a microphone set are displayed on the monitor 30 via the video processing unit 16. In accordance with this display, the adjustment operator performs setting of the microphone and the like, and when preparation is completed, preparation completion (OK) is input from the operation panel 15. If there is this OK input (S50: Yes), the sound source unit 24 is instructed to start outputting pink noise.

  The pink noise output from the sound source unit 24 is generated from the speaker 40 via the equalizer 25 and a DA converter (not shown). In this way, the sound signal input from the microphone 50 with the pink noise output from the speaker 40 is subjected to frequency analysis (in this case, by FFT) in the frequency analysis unit 27, and the result, that is, the measured gain value is voiced. It memorize | stores in RAM23 of the process part 20 (S70). The frequency analysis unit 27 divides the input sound signal (pink noise) into a frequency band of 20 Hz to 20 kHz into 15 bands (bands) in the same manner as the 15 frequency bands in the equalizer 25, and each frequency band. Analyze the sound pressure. In addition, since the sound signal (pink noise) input by the microphone 50 is output from the speaker 40 again during the measurement / setting processing of the sound pressure frequency characteristics, inconvenience occurs. Is not output.

  On the other hand, the target gain value is read from the hard disk storage device 14 to the RAM 23 of the sound processing unit 20, and the gain value of the equalizer 25 is changed based on the measured gain value and the target gain value, which are the frequency analysis results (S80). ). In the present embodiment, using a bisection method, which is one of approximate calculation methods by a computer, the gain value of the equalizer 25 in each band is determined based on the target gain value and the measured gain value. The details of the subroutine processing relating to the gain value change in S80 will be described in more detail with reference to the flowchart of FIG.

  First, it is determined whether or not the absolute value of the value obtained by subtracting the measured gain value Y in each band from the target gain value X in each band is 1 dB or more. If | X−Y | <1 (S801: No), this subroutine is terminated without executing the processing of S802 and subsequent steps. That is, if the difference between the target gain value X and the measured gain value Y is relatively small, it means that the gain value change itself of the equalizer 25 is not performed. On the other hand, if | X−Y | ≧ 1 (S801: Yes), the process proceeds to S802, where it is determined whether the target gain value X is larger than the measured gain value Y.

  If X> Y (S802: Yes), (| XY | / 2) is added to the gain value Z of the equalizer 25 in each current band (S803). Then, it is determined whether or not the gain value Z of the equalizer 25 after the addition in S803 is larger than 12 dB (S804). Since the adjustment range of the equalizer 25 of the present embodiment is ± 12 dB, when the calculation result Z> 12 dB in S803 (S804: Yes), the equalizer maximum 25 dB is set as the maximum positive adjustment value. (S805), and this subroutine is finished. Further, when Z ≦ 12 dB (S804: No), it is not necessary to perform the restriction as in S805, and thus this subroutine is terminated as it is. That is, the gain value Z of the equalizer 25 set in S803 is applied as it is.

  On the other hand, if X ≦ Y (S802: No), (| X−Y | / 2) is subtracted from the current gain value Z of the equalizer 25 (S806). Then, it is determined whether or not the gain value Z of the equalizer 25 after subtraction in S806 is smaller than −12 dB (S807). Since the adjustment range of the equalizer 25 of this embodiment is ± 12 dB, if the calculation result Z <−12 dB in S806 (S807: Yes), −12 dB which is the maximum negative adjustment value is uniformly set to −12 dB. The gain value Z of the equalizer 25 is set (S808), and this subroutine is terminated. If Z ≧ −12 dB (S807: No), there is no need to perform the restriction as in S808, and the subroutine is terminated as it is. That is, the gain value Z of the equalizer 25 set in S806 is applied as it is.

  In the present embodiment, the gain value of the equalizer 25 is determined using a bisection method as shown in FIG. 6, but even if other than the bisection method, for example, the measurement gain value is subtracted from the target gain value. The gain value may be determined. As another similar method of the bisection method, a positive real number larger than 0 and smaller than 2 in this embodiment instead of (| X−Y | / 2) in S803 or S806 in FIG. 1 (unit dB)) and a method of convergence can be adopted, and the gain value of the equalizer 25 can be obtained using various methods of approximate calculation by a computer.

  When the subroutine shown in FIG. 6 ends, the process proceeds to S90 in FIG. In S90, it is determined whether or not a certain time has elapsed. Until the certain time has elapsed (S90: No), the measurement in S70 and the process of changing the gain value in S80 are repeated.

  When a predetermined time has elapsed (S90: Yes), the sound source unit 24 is controlled to stop the output of pink noise (S100), and the current gain value of the equalizer 25 is recorded in the hard disk storage device 14 (S110). It should be noted that the fixed times in S70 and S90 are desirably set to values such that the fixed time in S70 is 0.5 seconds and the fixed time in S90 is 60 seconds, for example. Then, the monitor 30 displays that the sound pressure frequency characteristic measurement / setting process has been completed (S120), and returns to the karaoke mode (S130). Thereafter, the process proceeds to S10.

By executing the processing as described above, the gain value in the equalizer 25 can be changed (adjusted) to a value according to the reproduction environment.
[Start process]
In the first step S210 in the flowchart of the activation process shown in FIG. 7, various initialization processes are executed. This includes, for example, reset of hardware (modem 12, operation panel 15, video processing unit 16, etc.), confirmation of program version, setting of volume level, and the like.

  Then, it is determined whether or not the gain value is recorded in the hard disk storage device 14 (S220). If the gain value is recorded in the hard disk storage device 14 (S220: Yes), the gain value in the equalizer 25 is stored in the hard disk. Settings are made as recorded in the device 14 (S230). Then, the karaoke mode is started (S250). Therefore, when performing in this karaoke mode, the gain value in the equalizer 25 is adjusted in accordance with the playback environment, and is set in the “environment used to determine the sound quality that the data producer considers optimal”. Thus, karaoke performance in a state that matches or approximates the target gain value (see FIG. 4A) for specifying the sound pressure frequency characteristic that provides the optimum sound quality is realized.

  On the other hand, if the gain value is not recorded in the hard disk storage device 14 (S220: No), the gain value in the equalizer 25 is set to be flat (specifically, the gain values of each band are all 0) (S240). Then, it transfers to S250 and starts karaoke mode.

[Music selection / performance processing]
In the first step S310 in the flowchart of the karaoke song selection and performance process shown in FIG. 8, it is determined whether or not a karaoke song number has been input via the operation panel 15, and if a number has been input (S310: Yes), Corresponding music data is acquired from the hard disk storage device 14 (S320). Then, it is determined whether or not the acquired song data includes a fine adjustment gain value (S330). If the fine adjustment gain value is included (S330: Yes), it corresponds to the song data. The gain value is reflected (S340). Specifically, the equalizer 25 is controlled so that the gain value reflects the fine adjustment gain value. Then, the karaoke performance is executed (S370), and after the performance is completed, the gain value of the equalizer 25 is returned to the original value (S380).

  On the other hand, if the tune data does not include the fine adjustment gain value (S330: No), it is determined whether or not the genre data includes the fine adjustment gain value (S350). If the fine adjustment gain value is included (S350: Yes), the gain value corresponding to the genre data is reflected (S360). Specifically, the equalizer 25 is controlled so that the gain value reflects the fine adjustment gain value. Then, the karaoke performance is executed (S370), and after the performance is completed, the gain value of the equalizer 25 is returned to the original value (S380). If a negative determination is made in S350, the process proceeds to S370 as it is and karaoke performance is executed.

  Here, the fine adjustment gain value will be described. The gain value adjustment of the equalizer 25 performed in the measurement / setting processing of the sound pressure frequency characteristic shown in FIG. 5 described above is mainly performed based on the difference in the reproduction sound field environment where the communication karaoke terminal 1 is installed. In other words, it is a general-purpose adjustment of sound pressure frequency characteristics. In addition, since this measurement / setting is also adjusted by generating pink noise, it is not the case that the same gain value adjustment is optimal for any song when the karaoke song is actually played. It may be better to fine tune depending on the tune. Therefore, in this embodiment, the sound pressure frequency characteristic is further adjusted using the fine adjustment gain value described above. At this time, two types of fine adjustment gain values were prepared. That is, the fine adjustment gain value corresponding to each piece of music data and the fine adjustment gain value corresponding to the music genre. The fine adjustment gain value corresponding to each piece of music data is more suitable for that piece of music, but each piece of music must have such a fine adjustment gain value. Creation and the fine adjustment gain value data must be included in the song data. In addition, the same fine genre gain value may be sufficient for songs of the same genre. Therefore, a fine adjustment gain value is created for each genre, and a fine adjustment gain value corresponding to the song is created only for the song that needs to be finely adjusted differently from the fine adjustment gain value corresponding to the genre. If this is done, the workload on the fine adjustment gain value data creation side is reduced, and as a result, the amount of data to be distributed is also reduced.

  The fine adjustment gain value corresponding to the song is included in the song data, and the fine adjustment gain value corresponding to the genre (hereinafter also referred to as genre gain value) is included in the genre data, and the distribution host device 100 Delivered to the online karaoke terminal 1. FIG. 9 is an explanatory diagram of song data and genre data.

  FIG. 9A shows music data (part 1), and there are data areas for storing headers, MIDI, lyrics, titles, and fine adjustment gain values. There is also a genre data area in the header. In the case of this music data (part 1), there is always a data area for fine adjustment gain values. When it is not necessary to make a fine adjustment substantially, the gain values of all the bands are set to ± 0.

  FIG. 9B shows song data (part 2). There are data areas for storing the header, MIDI, lyrics, and title, respectively, and if a fine adjustment gain value is included, therefore, Data area exists. The header also includes a genre data area and a data area for storing a fine adjustment gain value flag. This fine adjustment gain value flag indicates whether or not there is a fine adjustment gain value. When a fine adjustment gain value data area is provided, this fine adjustment gain value flag is set to “data present”. To do.

  FIG. 9C is an explanatory diagram of genre data, and genre gain values (1) (2) (3)... For genre codes (1) (2) (3). (N) is set.

[Explanation of operations when receiving distribution of song data and target gain value data]
Next, the operation when the communication karaoke terminal 1 downloads a data file including song data / target gain value data from the distribution host device 100 in the communication karaoke system of the present embodiment will be described.

[For terminal call type]
FIG. 10 shows a case in which a call is made from the communication karaoke terminal 1 to the distribution host device 100. FIG. 10A is a flowchart showing processing executed in the communication karaoke terminal 1, and FIG. 10B is a flowchart showing processing executed in the distribution host device 100.

  The communication karaoke terminal 1 determines whether or not a predetermined time programmed in advance as the time to download from the distribution host device 100 has come (S410). When the download time is reached (S410: Yes), a call is made to the distribution host device 100 to establish a connection (S420). When a connection error occurs, retry is performed a predetermined number of times.

  On the other hand, the distribution host device 100 determines whether there is an incoming call (S510). If there is an incoming call (S510: Yes), the connection with the communication karaoke terminal 1 is established (S520), and the distribution host is established. The file list held in the hard disk storage device 104 of the device 100 is transmitted to the communication karaoke terminal 1 (S530). This file list is composed of new song data 1 to n file names and target gain value data file names, for example, as shown in FIG. The hard disk storage device 104 of the distribution host device 100 stores the actual data corresponding to the new song data 1 to n file names and the target gain value data file names in the file list, that is, the new song data 1 to n files and the target. A gain value data file is also stored.

  The communication karaoke terminal 1 receives the file list transmitted from the distribution host device 100 (S430), checks in order from the first file name in the file list, and has already been stored in the hard disk storage device 14 of the communication karaoke terminal 1. It is determined whether or not actual data corresponding to the file name is held (S440). If not held (S440: No), the distribution host apparatus 100 is requested to distribute the corresponding file (S450).

  In the distribution host device 100, after transmitting the file list to the communication karaoke terminal 1 in S530, it is determined whether or not the file list has been disconnected (S540). If it is not disconnected (S540: No), it is determined whether or not a file request is made from the communication karaoke terminal 1 (S550). If a file request is made (S550: Yes), the requested file is transferred to the communication karaoke terminal. 1 is transmitted (S560). Thereafter, the process returns to S540.

  The communication karaoke terminal 1 receives the corresponding file transmitted from the distribution host device 100 and stores it in the hard disk storage device 14 (S460). Then, it is determined whether or not all the file lists received in S430 have been checked (S470). If not all are checked (S470: No), the process returns to S440, and the processes of S440 to S460 are executed. If all checks have been completed (S470: Yes), communication with the distribution host device 100 is disconnected (S480).

When the communication karaoke terminal 1 is disconnected in S480, the distribution host device 100 makes an affirmative determination in S540 of FIG. 10B, and returns to S510.
[For host call type]
FIG. 11 shows a case in which a call is made from the distribution host device 100 to the communication karaoke terminal 1. FIG. 11A is a flowchart showing processing executed by the communication karaoke terminal 1, and FIG. 11B is a flowchart showing processing executed by the distribution host device 100.

  The distribution host device 100 determines whether or not a predetermined time programmed in advance as the time for distribution to the communication karaoke terminal 1 has been reached (S710). When the distribution time is reached (S710: Yes), it is determined whether or not a call is made to all the communication karaoke terminals 1 in the terminal list shown in FIG. 12B (S720). This terminal list includes telephone numbers (terminal 1 telephone number, terminal) corresponding to serial numbers (terminal 1 serial number, terminal 2 serial number... Terminal n serial number) set for a plurality of online karaoke terminals 1. 2 telephone number... Terminal n telephone number) is stored.

  If calls to all the communication karaoke terminals 1 in the terminal list have not yet been made (S720: No), one terminal information (in this case, serial number + telephone number) in order from the top of the terminal list ) Is acquired (S730). Then, a call is established to the corresponding communication karaoke terminal 1 to establish a connection (S740). When a connection error occurs, retry is performed a predetermined number of times.

On the other hand, the communication karaoke terminal 1 determines whether there is an incoming call (S610), and if there is an incoming call (S610: Yes), establishes a connection with the distribution host device 100 (S620).
When the connection with the communication karaoke terminal 1 is established in S740, the distribution host device 100 transmits the file list (see FIG. 12A) held in the hard disk storage device 104 to the communication karaoke terminal 1 (S750). ). The communication karaoke terminal 1 receives the file list transmitted from the distribution host device 100 (S630), checks in order from the first file name in the file list, and has already been stored in the hard disk storage device 14 of the communication karaoke terminal 1. It is determined whether or not actual data corresponding to the file name is held (S640). If not held (S640: No), the distribution host apparatus 100 is requested to distribute the corresponding file (S650).

  The distribution host device 100 determines whether or not there is a disconnection request after transmitting the file list to the communication karaoke terminal 1 in S750 (S760). If there is a disconnect request (S760: Yes), disconnect (S770) and return to S720, but if there is no disconnect request (S760: No), it is determined whether or not a file request is made from the communication karaoke terminal 1 (S780). . If the file is requested (S780: Yes), the requested file is transmitted to the communication karaoke terminal 1 (S790). Thereafter, the process returns to S760.

  The communication karaoke terminal 1 receives the corresponding file transmitted from the distribution host device 100 and stores it in the hard disk storage device 14 (S660). Then, it is determined whether or not all the file lists received in S630 have been checked (S670). If not all are checked (S670: No), the process returns to S640, and the processes of S640 to S660 are executed. If all checks have been completed (S670: Yes), a disconnection request is transmitted to the distribution host device 100 (S680).

  When the communication karaoke terminal 1 transmits a disconnection request to the distribution host device 100 in S680, the distribution host device 100 makes an affirmative determination in S760 of FIG. 11B, and as described above, the communication karaoke terminal in S770. The communication with the terminal 1 is disconnected.

In the present embodiment, the equalizer 25 corresponds to “equalizer”, and the configuration of the audio processing unit 20 excluding the equalizer 25 corresponds to “gain value adjusting means”. The hard disk storage device 14 of the main control unit 10 corresponds to “data storage unit”, and the CPU 11 of the main control unit 10, the CPU 21 of the sound processing unit 20, and the sound source unit 24 correspond to “music reproducing unit”. The CPU 11 and the modem 12 of the main control unit 10 correspond to “reception control means”. The CPU 101 of the distribution host device 100 corresponds to “distribution control means”.

[Effect of Example]
(A) In each communication karaoke terminal 1, the gain value of the equalizer 25 is adjusted so as to match the target gain value distributed from the distribution host device 100. In this gain value adjustment, the communication karaoke terminal itself performs adjustment processing based on the difference between the measured gain value and the target gain value. Therefore, even if, for example, tens of thousands of communication karaoke terminals 1 are connected to one distribution host device 100, the distribution host device 100 does not execute processing for gain value adjustment in the communication karaoke terminal 1. So there is no processing load. In the conventional method, it is necessary to receive the distribution of the correction value calculated for each terminal device in the distribution host device. Therefore, in the terminal device whose processing order is later, it waits for a long time before receiving the correction value distribution. However, in the communication karaoke system of this embodiment, if the target gain value data is received from the distribution host device 100, the subsequent adjustment work is completed at the communication karaoke terminal 1. The situation does not occur.

  In addition, the communication load is significantly reduced. If it is a conventional method, the measurement data obtained by the terminal device is uploaded to the distribution host device, the correction value is calculated by the distribution host device based on the measured data, downloaded to the terminal device, and the measurement corresponding to the correction value is performed. It was necessary to repeat the process of uploading data from the terminal device to the distribution host device for each terminal device, but if this was executed for each tens of thousands of terminal devices, the communication load would be enormous. Become. On the other hand, in the case of the communication karaoke system of the present embodiment, it is only necessary to distribute the target gain value data from the distribution host device 100 to each communication karaoke terminal 1, and the subsequent adjustment work is completed at the communication karaoke terminal 1. Therefore, uploading from the communication karaoke terminal 1 to the distribution host device 100 does not occur with respect to the adjustment work. Needless to say, no download occurs for the upload, which is very effective in reducing communication load.

  In this embodiment, a general public line network (PSTN) 90 is used as a communication line between the distribution host device 100 and the communication karaoke terminal 1. However, when a general public line network is used, a conventional method may be used. The following problems arise. That is, since the adjustment operation itself requires communication between the distribution host device and the terminal device, if a server side call system is constructed, the adjustment operation at an arbitrary timing on the terminal device side cannot be realized. On the other hand, in the case of the present embodiment, as shown in FIGS. 10 and 11, even if the call is made from either the communication karaoke terminal 1 or the distribution host device 100, the distribution of the target gain value data is performed. After that, since the adjustment work is completed at the communication karaoke terminal 1, the adjustment work can be executed at any timing of the communication karaoke terminal 1.

  (B) As described with reference to FIG. 8, since the fine adjustment gain value corresponding to the music and the fine adjustment gain value corresponding to the genre can be reflected, the gain value of the equalizer 25 can be set more appropriately. Can be. In the case of the present embodiment, if there is a fine adjustment gain value corresponding to a song, the fine adjustment gain value corresponding to the genre is not used, and the fine adjustment gain value corresponding to the song is reflected. The gain value adjustment by the equalizer 25 is performed. This is because the fine adjustment gain value corresponding to the music is a gain value that allows fine adjustment according to the music.

  (C) The target gain value is a gain value for specifying a “recommended” sound pressure frequency characteristic, which the creator of the karaoke music thinks is “preferably such a sound pressure frequency characteristic”. Therefore, the target gain value once determined may be changed by subsequent examination. Even in such a case, if the target gain value after the change is distributed from the distribution host device 100 to the communication karaoke terminal 1, the gain value adjustment is executed at each communication karaoke terminal 1, and it is very convenient. It is.

[Another embodiment]
(1) In the above embodiment, the target gain value is described as being one, but the target gain value is not necessarily one type, and there may be a plurality of types. In that case, a plurality of target gain values corresponding to a predetermined condition are stored in the hard disk storage device 104 of the distribution host device 100, and at the time of distribution to the communication karaoke terminal 1, a target corresponding to the condition of each terminal is stored. Distribute the gain value. The target gain value is not necessarily an absolute optimum for everyone. Finally, there are aspects that are left to the user's subjectivity. Therefore, the music producer responds to each by taking into account, for example, the singer's age group and regional characteristics, or the karaoke terminal's singers and owners' musical preferences (such as rock lovers and enka lovers). It is also conceivable to determine the target gain value. Therefore, if a plurality of gain values determined as described above are distributed to the communication karaoke terminal 1 suitable for each, a more appropriate adjustment is realized. Examples of such conditions include the singer's age group, region, and pre-classified terminal user's musical preferences, as shown in the above analysis.

  And about such conditions, it is possible that a person inputs via the operation panel 15 in the communication karaoke terminal 1, and notifies the host apparatus 100 for delivery from the communication karaoke terminal 1 about the input conditions. It should be noted that any of age group, region, and terminal user's musical preference may be due to input from the operation panel 15. In the case of an age group, a numerical value may be input, and in the case of an area or musical preference, selection items may be displayed on the monitor 30 and selected from these via the operation panel 15.

  However, for example, in the case of musical preference, it is possible to automatically determine, for example, according to past karaoke performance results, and from the past performance results, determine a frequently occurring genre and grasp the musical preference based on it You can also Of course, since it may be determined according to the original preference of the owner (owner) of the communication karaoke terminal 1 regardless of the past results, in this case, the input from the operation panel 15 described above is good. In the case of a region, for example, if the communication karaoke terminal 1 includes a positioning system such as a GPS, the region may be specified based on the current position information measured by the positioning system.

In this case, the operation panel 15 of the communication karaoke terminal 1 corresponds to “accepting means”, and the CPU 11 and the modem 12 of the main control unit 10 correspond to “notifying means”.
(2) In the above embodiment, pink noise for measurement is generated from the sound source unit 24. However, for example, a pink noise generation unit may be provided separately from the sound source unit 24.

  (3) In the above embodiment, the frequency analysis unit 27 performs frequency analysis using FFT in order to grasp the sound pressure frequency characteristics. However, instead of using FFT, for example, a band pass filter and a peak value detector may be provided for each band, and the sound pressure frequency characteristic may be measured at the peak value of each band.

  (4) In the above embodiment, the example realized as a so-called communication karaoke system has been described, but the terminal device may be other than the karaoke terminal.

It is a block diagram which shows the structure of the communication karaoke system as one Example of an information communication system. It is explanatory drawing which shows the sound pressure frequency characteristic measurement state in the environment used in order to determine the sound quality which the data producer considers optimal when producing music data. It is explanatory drawing which shows the sound pressure frequency characteristic measurement state in the case of correcting with the communication karaoke terminal 1. It is explanatory drawing which shows the example of the gain value of a target gain value, a measurement gain value, and an equalizer based on them. It is a flowchart which shows the process which concerns on the measurement and setting of a sound pressure frequency characteristic. It is a flowchart which shows the gain value change process performed in S80 of FIG. It is a flowchart which shows starting processing It is a flowchart which shows a music selection / performance process. It is explanatory drawing of music data and genre data. It is a flowchart which shows the data delivery operation | movement in the case of a terminal call. It is a flowchart which shows the data delivery operation | movement in the case of a host call. It is explanatory drawing of the file list and terminal list with which the distribution host device 100 is provided.

  DESCRIPTION OF SYMBOLS 1 ... Communication karaoke terminal, 10 ... Main control part, 11 ... CPU, 12 ... Modem, 13 ... RAM, 14 ... Hard disk storage device, 15 ... Operation panel, 16 ... Image processing part, 20 ... Audio | voice processing part, 21 ... CPU 22 ... ROM, 23 ... RAM, 24 ... sound source unit, 25 ... equalizer, 26 ... voice effect unit, 27 ... frequency analysis unit, 30 ... monitor, 40 ... speaker, 50 ... microphone, 90 ... general public network or Internet , 100: Host device for distribution, 101: CPU, 102: ROM, 103: RAM, 24... 104: Hard disk storage device, 105: Communication control unit.

Claims (11)

An information communication system comprising a distribution host device and a plurality of terminal devices, wherein the distribution host device and the terminal device are configured to be capable of information communication with each other via a communication line,
The terminal device
An equalizer that can change the gain value to change the sound pressure frequency characteristics;
Gain value adjusting means for adjusting the gain value of the equalizer so that the sound pressure frequency characteristic in the reproduction sound field matches the target sound pressure frequency characteristic ;
Data storage means for storing music data;
Music playback means for playing back music based on the music data stored in the data storage means ,
The distribution host device distributes gain value data for specifying the target sound pressure frequency characteristic to the terminal device when distributing the music data, and a fine adjustment gain set for each music Distribution control means for distributing value data corresponding to the music data ,
The data storage means of the terminal device stores the fine adjustment gain value data distributed from the distribution host device in the data storage means in association with the music data, and also corresponds to the music genre and the music genre. It also stores genre data indicating the correspondence with fine adjustment gain values.
Wherein the gain value adjusting means of the terminal apparatus, in advance of performing music playback, and adjust the gain value of the equalizer based on the gain value data specifying the target sound pressure frequency characteristic which is distributed from the distribution host device And
When the music playback means of the terminal device performs music playback, if the gain value data for fine adjustment corresponding to the music exists in the data storage means, the gain value data for music fine adjustment is stored. The music reproduction is performed after changing the gain value for changing the sound pressure frequency characteristic by the equalizer to be reflected, while there is no fine adjustment gain value data corresponding to the music, and the data storage When the gain value data for fine adjustment corresponding to the genre of the music exists in the means, the gain value for changing the sound pressure frequency characteristic by the equalizer is reflected so that the gain value data for fine adjustment corresponding to the genre is reflected. The music is played after the change, and when the music playback is finished, the equalizer is controlled so that the gain value specifying the target sound pressure frequency characteristic before the playback is obtained. Information communication system according to claim Rukoto. The information communication system according to claim 1,
The equalizer can change the gain value for each frequency band divided into a plurality of parts to change the sound pressure frequency characteristics,
The information communication system, wherein gain value data for specifying the target sound pressure frequency characteristic is also set for each of the plurality of divided frequency bands. The information communication system according to claim 1 or 2,
The information communication system, wherein the communication line is a general public line network or the Internet. The information communication system according to any one of claims 1 to 3,
The gain value data for specifying the target sound pressure frequency characteristic is set corresponding to the singer's age group,
The terminal device
Accepting means for accepting data input identifying a singer age group;
Notification means for notifying the singer age group to the distribution host device based on the singer age group specific data received by the receiving means,
The distribution control means of the distribution host device distributes gain value data specifying the target sound pressure frequency characteristic corresponding to the singer age group notified from the terminal device of the distribution destination. Communications system. The information communication system according to any one of claims 1 to 3 ,
The gain value data for specifying the target sound pressure frequency characteristic is set corresponding to the region,
The terminal device
Accepting means for accepting data input for specifying an area where the terminal device is used;
Notification means for notifying the use host device of the use area based on the use area specifying data received by the receiving means,
The distribution control means of the distribution host device distributes gain value data specifying the target sound pressure frequency characteristic corresponding to the use area notified from the distribution destination terminal device. . The information communication system according to any one of claims 1 to 3 ,
The gain value data for specifying the target sound pressure frequency characteristic is set corresponding to the musical preference of the terminal user classified in advance,
The terminal device
Accepting means for accepting data input specifying the musical preference of the user of the terminal device;
Notification means for notifying the distribution host device of musical preference based on the musical preference specifying data received by the receiving means,
The distribution control means of the distribution host device distributes gain value data specifying the target sound pressure frequency characteristic corresponding to the user preference notified from a distribution destination terminal device. . A terminal device comprising the equalizer, gain value adjusting means, data storage means, and music reproducing means according to any one of claims 1 to 3, wherein the program is executed by a computer provided in the terminal device,
The program for functioning the said computer as the said gain value adjustment means with which the terminal device in the information communication system in any one of Claims 1-3 is equipped, and the said music reproduction means. A program executed by a computer provided in the terminal device including the equalizer, the gain value adjusting unit, the data storage unit, the music reproducing unit, the receiving unit, and the notification unit according to any one of claims 4 to 6. Because
The program for functioning the said computer as said gain value adjustment means with which the terminal device in the information communication system in any one of Claims 4-6 is provided, the said music reproduction means, and the said notification means. The communication karaoke terminal in an information communication system comprising a distribution host device and a plurality of communication karaoke terminals, wherein the distribution host device and the communication karaoke terminal are configured to be able to communicate with each other via a communication line. ,
An equalizer that can change the gain value to change the sound pressure frequency characteristics;
Gain value adjusting means for adjusting the gain value of the equalizer so that the sound pressure frequency characteristic in the reproduction sound field matches the target sound pressure frequency characteristic;
Data storage means for storing music data;
Music playback means for playing back music based on the music data stored in the data storage means;
When receiving the music data, the gain value data for specifying the target sound pressure frequency characteristic is received from the distribution host device, and the fine data set for each music distributed corresponding to the music data is set. Receiving control means for receiving gain value data for adjustment,
The data storage means stores the fine adjustment gain value data received from the distribution host device by the reception control means in the data storage means in association with the music data, and corresponds to the music genre and the corresponding music genre. It also stores genre data indicating the correspondence with fine adjustment gain values.
The gain value adjusting unit adjusts the gain value of the equalizer based on gain value data specifying the target sound pressure frequency characteristic received from the distribution host device by the reception control unit in advance of music reproduction. And
When the music reproducing means reproduces the music, if there is fine adjustment gain value data corresponding to the music in the data storage means, the music corresponding fine adjustment gain value data is reflected. The music reproduction is performed after changing the gain value for changing the sound pressure frequency characteristic by the equalizer, and there is no fine adjustment gain value data corresponding to the music, and the data storage means stores the music. If the gain value data for fine adjustment corresponding to the genre exists, the gain value for changing the sound pressure frequency characteristic by the equalizer is changed so that the gain value data for fine adjustment corresponding to the genre is reflected. Performing the music reproduction, and when the music reproduction is completed, controlling the equalizer so as to obtain a gain value for specifying the target sound pressure frequency characteristic before the reproduction.
A communication karaoke terminal characterized by In the communication karaoke terminal according to claim 9,
The gain value adjusting means is based on the gain value data specifying the target sound pressure frequency characteristic received from the distribution host device by the reception control means before the music to be played is selected. Adjust the gain value of
A communication karaoke terminal characterized by A distribution host device comprising the configuration of the distribution host device in the information communication system according to claim 1 .

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