JP2004318075A - Music reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a music reproducing apparatus capable of easily realizing an optimum sound field corresponding to use conditions. <P>SOLUTION: This apparatus comprises: a microphone 48 for sound field setting for inputting sound information outputted from a karaoke machine 10 in environment wherein the karaoke machine 10 is used; a DSP frequency analyzer 46 calculating frequency characteristics representing gains by a plurality of frequency bands by taking frequency analysis of the sound information inputted from the microphone 48 for sound field setting; and a DSP 44 which automatically changes output characteristics the karaoke machine 10 so that frequency characteristics of pink noise outputted from the karaoke machine 10 which are calculated by the DSP frequency analyzer 46 match predetermined recommended frequency characteristics. Thus, no technical knowledge about sound is needed for sound field setting. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a music reproducing device such as a karaoke device used in a karaoke box, for example, and particularly to a function of setting a sound field according to use conditions.

  2. Description of the Related Art There is known a music reproducing apparatus for outputting a desired music piece selected and input from a plurality of music pieces stored in a predetermined storage device in advance. For example, it is a karaoke device used in a karaoke box or the like. According to such a karaoke apparatus, music information of a desired music piece selected from a plurality of music pieces stored in the storage device in advance is output, and the lyrics information of the music piece is displayed on the screen in synchronization with the output. By displaying, the karaoke performance of a desired song can be enjoyed.

  By the way, the way in which the sound output from the music playback device is heard varies depending on the size and shape of the room in which the music playback device is installed, the material of the wall, and the like. Therefore, a music reproducing device having a function of setting an optimal sound field according to the installation location has been proposed. For example, this is the music playback device described in Patent Document 1. According to this music reproducing apparatus, the microphone for taking in the audio signal, the DSP (Digital Signal Processor) for dividing the audio signal taken in by the microphone into each frequency band, and the frequency band divided by the DSP are used. A display unit for displaying the audio signal as a frequency characteristic, by performing an equalizing process or the like on the audio signal by manual operation based on the frequency characteristic displayed on the display unit. Sound field can be realized.

JP-A-10-55185

  However, as in the above-described conventional technique, it is necessary to perform specialized processing on an audio signal by manual operation based on a visually displayed frequency characteristic. It has been difficult for a karaoke box clerk or the like who performs the sound field setting operation to realize an optimum sound field according to the use conditions such as the installation location.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a music reproducing apparatus that can easily realize an optimal sound field according to use conditions.

  In order to achieve such an object, the gist of the present invention is a music playback device that outputs a desired music piece selected and input from a plurality of music pieces, and the music playback device is used. Information input means for inputting sound information output from the music reproducing apparatus in an environment, and a frequency indicating a gain for each of a plurality of frequency bands by frequency-analyzing the sound information input by the sound information input means. Frequency characteristic calculating means for calculating the characteristic, and the music reproduction so that the frequency characteristic of the predetermined sound information output from the music reproducing device calculated by the frequency characteristic calculating means matches a predetermined recommended frequency characteristic. Output characteristic changing means for changing the output characteristic of the apparatus.

  According to this configuration, in an environment in which the music reproducing device is used, sound information input means for inputting sound information output from the music reproducing device, and sound information input by the sound information input Frequency characteristic calculating means for analyzing and calculating a frequency characteristic indicating a gain for each of a plurality of frequency bands, and the frequency characteristic of predetermined sound information output from the music reproducing device calculated by the frequency characteristic calculating means are predetermined. And output characteristic changing means for changing the output characteristic of the music reproducing apparatus so as to match the recommended frequency characteristic thus set, so that no special knowledge about sound is required for setting the sound field. That is, it is possible to provide a music reproducing apparatus that can easily realize an optimal sound field according to use conditions.

  Here, preferably, the output characteristic changing means corrects the output characteristic of the music reproducing device according to a predetermined time zone. By doing so, there is an advantage that more detailed sound field setting can be performed.

  Preferably, the output characteristic changing means corrects an output characteristic of the music reproducing device according to a customer class using the music reproducing device. By doing so, there is an advantage that more detailed sound field setting can be performed.

  Preferably, the output characteristic changing means corrects an output characteristic of the music reproducing device according to a temperature and a humidity. By doing so, there is an advantage that more detailed sound field setting can be performed.

  Preferably, the output characteristic changing means can change the output characteristic of the music reproducing device according to a predetermined manual operation. In this way, after automatically setting the sound field according to the use conditions, it is possible to make settings such as fine adjustment of the output characteristics by manual operation, and the advantage that the sound field can be set more finely. is there.

  Preferably, the apparatus further includes output characteristic storage means for storing the output characteristic of the music reproducing device changed by the output characteristic change means. In this case, there is an advantage that output characteristics according to a plurality of use conditions are set and stored in advance by the output characteristic changing means, and can be read out as appropriate and applied to the music reproducing apparatus.

  Preferably, the apparatus further includes output characteristic transmitting / receiving means for transmitting / receiving output characteristics of the music reproducing device to / from a predetermined server or another music reproducing device. With this configuration, the output characteristic of the music reproducing device actually set by the output characteristic changing unit is transmitted to the server as a recommended value, or the music reproducing device is output as an output characteristic applied to another music reproducing device. And the output characteristics actually set by another music reproducing device can be received from the music reproducing device or the server.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a karaoke apparatus 10 which is an example of a music reproducing apparatus to which the present invention is applied. As shown in FIG. 1, such a karaoke apparatus 10 includes a video display device 12 such as a CRT, a disc player 14 for reproducing a background video, a video mixer 16, an amplifier mixer 18, a speaker 20, a voice input device, and the like. And a control panel 24, a CPU 26 as a central processing unit, a ROM 28, a RAM 30, a hard disk 32 as a storage device, a modem 34, a connection port 35, a CRT controller 36, and input signals from the operation panel 24. An input / output interface 38 for processing, a synthesizer 40 for synthesizing and outputting music information, a D / A converter 42, a DSP (Digital Signal Processor) 44 as a sound field setting device, a DSP frequency analyzer 46 , A sound field setting microphone 48, a temperature sensor 50, and a humidity sensor 52. Equipped and are configured.

  The CPU 26 is a so-called microcomputer that processes and controls electronic information based on a predetermined program stored in the ROM 28. When a user (user of the karaoke apparatus 10) selects a predetermined karaoke performance song, The performance information and the lyric information of the selected karaoke performance music are read from the hard disk 32 to the RAM 30, the performance information is transmitted from the RAM 30 to the synthesizer 40 as the performance of the karaoke performance music progresses, and the CRT is read. For basic control such as generating and sending a lyric character image to the controller 36 based on the lyric information, sending a tune name character image to the CRT controller 36 at the time of music selection, and playing a predetermined background image by the disc player 14. In addition, the DSP 44, the DSP frequency analyzer 46, and To run the sound field setting control by the sound field set for the microphone 48 or the like.

  The operation panel 24 is set for each customer in order to select a karaoke performance song that the user wants to sing, adjust the pitch of the performance song, adjust the volume balance between the performance and the song, and identify the customer. This is an input device provided with operation buttons (switches) or knobs for inputting a customer ID and performing various adjustments such as echo, volume, and tone. The operation panel 24 is provided with an operation knob 25 for setting a sound field. A sound field setting described later is performed by rotating or pressing the operation knob 25. Further, the karaoke apparatus 10 is provided with a remote controller 54 that functions as an input device similarly to the operation panel 24 in order to remotely execute some functions of the operation panel 24.

  The disc player 14 is a background video playback device that plays back a CD or DVD storing a background video displayed on the video display device 12 during a karaoke performance. In addition, the video mixer 16 generates a lyric character image (lyric telop) generated by the CPU 26 based on the lyric information read from the hard disk 32 and output from the CRT controller 36, An image synthesizing device that synthesizes the transmitted background image and displays the synthesized image on the image display device 12.

  The synthesizer 40 is a sound source that generates a music signal such as a performance signal of a musical instrument based on performance information of a music piece read and transmitted from the hard disk 32. The generated music signal is converted into an analog signal and supplied to the DSP 44, and then supplied to the amplifier mixer 18 with predetermined output characteristics. The amplifier mixer 18 mixes the transmitted music signal with the user's voice input via the microphone 22, and electrically amplifies the signal. Then, the mixed sound is output from the speaker 20. The D / A converter 42 converts, for example, data of a WAV format file into an analog signal and supplies its output to the DSP 44 when performing a karaoke performance, and directly supplies the output to the mixer amplifier 18 when setting a sound field described later. I do.

  FIG. 2 is a block diagram showing the configuration of the DSP 44. As shown in FIG. 2, the DSP 44 includes a parametric equalizer 56, a graphic equalizer 58, an enhancer 60, an isolator 62, an expander 64, and a compressor 66, and according to a command from the CPU 26, the amplifier mixer 18 To control the output characteristics of the music signal to be output. The parametric equalizer 56 and the graphic equalizer 58 change the gain, that is, the sound pressure level for each of a plurality of frequency bands such as 4 to 31 bands. The enhancer 60 makes sound in a predetermined frequency band brilliant. The isolator 62 divides sound for each of a plurality of frequency bands. The expander 64 expands sound in a predetermined frequency band. The compressor 66 compresses sound in a predetermined frequency band.

  The temperature sensor 50 detects a temperature of an environment (installation place) where the karaoke apparatus 10 is used. The humidity sensor 52 detects the humidity of the environment where the karaoke apparatus 10 is used. A signal representing the temperature detected by the temperature sensor 50 and a signal representing the humidity detected by the humidity sensor 52 are supplied to the CPU 26.

  FIG. 3 is a diagram illustrating an operation unit of the remote controller 54. As shown in the figure, the operation unit of the remote controller 54 is provided with twelve number buttons 54a including numbers from 0 to 9, a music selection button 54b, right and left and up and down arrow buttons 54c, and a cancel button 54d. ing. A display unit 54e for assisting and confirming operation is provided. The number button 54a is a button (switch) for inputting a music selection number or a customer ID. When the number button 54a is pressed, the number is displayed on the display section 54e, and the music selection button 54b is pressed. As a result, the music selection number and the customer ID are output, and the music selection number and the customer ID are determined. The left, right, up and down arrow buttons 54c are buttons for moving a similarly displayed cursor and the like up, down, left, right, and up when options are displayed on the video display device 12, and when the arrow button 54c is operated, When the cursor movement signal is output and the music selection button 54b is pressed, the selected item is determined. If the left and right arrow buttons 54c are operated during the karaoke performance by the karaoke apparatus 10, a pitch change signal for changing the pitch of the performance sound is output. The arrow button 54c is also used for changing the output characteristic of the karaoke apparatus 10 by deforming a curve indicating a frequency characteristic displayed on the video display device 12 when setting a sound field by manual operation described later. Can be As shown in FIG. 1, a configuration corresponding to these buttons and a display unit is also provided on the operation panel 24, and the same operation can be performed by the operation panel 24.

  The hard disk 32 has a song database storing performance information, back chorus information in WAV format, lyrics information, song name information and the like for each karaoke performance song identified by the song selection number, measurement data in WAV format, white noise, Characteristics of storing digitally encoded pink noise, recommended frequency characteristics and correction frequency characteristics that serve as references when setting the output characteristics of the karaoke apparatus 10, and output characteristics obtained as a result of sound field settings. A database is provided. That is, the hard disk 32 functions as an output characteristic storage unit that stores the output characteristics of the karaoke apparatus 10 changed (set) by the output characteristic changing unit. The performance information in the music database is stored in, for example, a MIDI (Musical Instrument Digital Interface) format, and is supplied to the synthesizer 40 when performing karaoke.

  The modem 34 is a device for connecting the CPU 26 to a communication line 67 such as a public telephone line, a cable for cable broadcasting, or an optical fiber, and includes a plurality of karaoke devices 10 provided in a store such as a karaoke box. Is connected to a host server 68 of a karaoke service providing company via such a communication line 67, so that information can be transmitted to and received from the host server 68. Then, in order to allow the karaoke apparatus 10 to always play a new song, song information of the new song is downloaded from the host server 68 via the communication line 67 at any time and stored in the song database of the hard disk 32. You. The connection port 35 is a connector for connecting the karaoke apparatus 10 to another karaoke apparatus 10 or a local server (own server) 70 provided for each store via a cable 69 such as a LAN cable. In addition, the karaoke apparatus 10 can transmit and receive information to and from another karaoke apparatus 10 and the local server 70 by being connected via the cable 69 in such a manner.

  FIG. 4 is a functional block diagram for explaining a main part of a sound field setting function provided in the karaoke apparatus 10. As shown in FIG. The sound field setting microphone 48 functions as sound information input means for inputting sound information output from the speaker 20 of the karaoke apparatus 10 in an environment where the karaoke apparatus 10 is used. The DSP frequency analyzer 46 analyzes the frequency of the sound information input by the sound field setting microphone 48 in accordance with a well-known frequency analysis algorithm, and gains (unit: decibel: dB) for each of a plurality of frequency bands, that is, a sound pressure. It functions as frequency characteristic calculating means for calculating the frequency characteristic indicating the level. The DSP frequency analyzer 46 is controlled by the CPU 26, and supplied to the CPU 26 with frequency characteristics indicating the calculated gain for each of the plurality of frequency bands. The output characteristic transmitting / receiving means 71 is a control function provided in the CPU 26, and transmits / receives the output characteristics of the karaoke device 10 to / from the host server 68, the local server 70, or another karaoke device 10. That is, the output characteristics actually set by the DSP 44 are transmitted to the host server 68 as recommended values or reference values, or transmitted to the karaoke device 10 or the local server 70 as output characteristics to be applied to another karaoke device 10. For example, the output characteristic set by the DSP 44 of another karaoke apparatus 10 is received from the karaoke apparatus 10 or the local server 70. The output characteristics received by the output characteristic transmitting / receiving means 71 are stored in the characteristic database of the hard disk 32 as output characteristics applicable to the karaoke apparatus 10. In a store such as a karaoke box, there are a plurality of private rooms having similar environments such as size and interior, and the karaoke device 10 is often installed in each room. The output characteristics thus set can be applied to the karaoke apparatus 10 provided in another room, so that the complexity of setting the output characteristics for the karaoke apparatus 10 provided in each room is eliminated. it can.

  The DSP 44, which is an output characteristic changing unit, controls the frequency characteristic of the predetermined sound information output from the karaoke device 10 calculated by the DSP frequency analyzer 46 according to the control of the CPU 26, with a predetermined recommended frequency characteristic. Change its output characteristics to match. The predetermined sound information is preferably a pink noise (a noise having a property that the intensity of a component included in a unit frequency band is inversely proportional to a frequency) or a white noise (a noise having a unit frequency band) stored in the hard disk 32 in advance. This is a noise tune having a content such as noise whose component strength is constant irrespective of frequency, and is read out by inputting a predetermined music selection number in the same manner as a normal performance tune, and is read out by the speaker 20. Output from

  FIG. 5 is a diagram illustrating the sound field setting by the CPU 26. As shown in FIG. 5, the DSP 44 has a curve 72 indicating a frequency characteristic of a noise tune which is collected (input) by the sound field setting microphone 48 and calculated by the DSP frequency analyzer 46. The output characteristic of the music signal output to the amplifier mixer 18 is changed so as to coincide with the curve 74 indicating the recommended frequency characteristic stored in the characteristic database. Here, the sound collection by the sound field setting microphone 48 is preferably performed at a place where the user is located when performing the karaoke.

  The DSP 44 preferably corrects its output characteristics according to various conditions including an environment in which the karaoke apparatus 10 is used. This correction is performed, for example, by changing the recommended frequency characteristic and executing the sound field setting shown in FIG. 5 again, and preferably corresponds to a plurality of conditions stored in the characteristic database. The average value of the gain in each frequency band in the corrected frequency characteristic and the recommended frequency characteristic is calculated, and the average value is used as the recommended frequency characteristic.

  The DSP 44 preferably corrects its output characteristics according to a predetermined time zone. 6 shows a curve 76 indicating a corrected frequency characteristic corresponding to 11:00 am to 3:00 pm, FIG. 7 shows a curve 78 indicating a corrected frequency characteristic corresponding to 3:00 pm to 8:00 pm, and FIG. Curves 80 indicating the correction frequency characteristics corresponding to hours to 11:00 are shown. Considering the customers who use the karaoke box by time of day, there are many high school students in the evening, office workers in the night, and college students in the late night to day. Therefore, a more suitable sound field is realized by performing the correction according to each customer layer.

  In addition, the DSP 44 preferably corrects the output characteristics of the karaoke apparatus 10 according to the number of customers who use the apparatus. FIG. 9 is a diagram illustrating a curve 82 indicating a corrected frequency characteristic corresponding to a user in his teens or 20s, and FIG. 10 is a diagram illustrating a curve 84 indicating a corrected frequency characteristic corresponding to a user in his thirties. Numeral 11 indicates curves 86 each representing a corrected frequency characteristic corresponding to a user who is 40 years or older. In general, the optimal frequency characteristics vary depending on the age, such as the treble range becomes more disturbing to the ear as the age increases. Therefore, a more suitable sound field is realized by performing the correction according to the age of the user.

  Further, the DSP 44 preferably corrects its output characteristics according to temperature and humidity. FIG. 12 shows a curve 88 indicating a correction frequency characteristic corresponding to a use environment at a temperature of 18 ° C. and a humidity of 50%. Since the transmission of the sound wave varies depending on the temperature and the humidity, the optimum frequency characteristics differ depending on the temperature and the humidity. Therefore, a more suitable sound field is realized by performing the correction in accordance with the temperature and the humidity.

  FIG. 13 is a flowchart for explaining the sound field setting control by the CPU 26, which is repeatedly executed at a predetermined cycle. Hereinafter, the sound field setting control of the karaoke apparatus 10 will be described with reference to this flowchart.

  First, a predetermined sound field setting screen is displayed on the video display device 12 in step S1 shown in FIG. FIG. 14 is a diagram exemplifying a sound field setting screen displayed on the video display device 12 in S1. The "sound field measurement & automatic sound field setting" which is automatic setting, and the "manual sound field setting" Rotation and pressing of the operation knob 25 from among "setting", "room environment" for setting an environment of a room where the karaoke apparatus 10 is installed, and "environment setting" for setting an environment such as a customer layer or a time zone. Either one can be selected by operation.

  Next, in S2, a microphone preparation screen for explaining the preparation of the sound field setting microphone 48 is displayed. FIG. 15 is a diagram exemplifying a microphone preparation screen displayed on the video display device 12 in S2, in which connection guidance of the sound field setting microphone 48, values to be adjusted for various sound volumes, and the like are displayed. It has become. Here, if the operation for moving to the next step is performed without the sound field setting microphone 48 being correctly connected, as shown in FIG. 16, the sound field setting microphone 48 is not connected. Is displayed on the image display device 12.

  Next, in S3, a noise music guide screen (not shown) for guiding a music selection number corresponding to the noise music is displayed. Next, in S4, it is determined whether or not a music selection number corresponding to the noise music has been input. While this determination is denied, the process stands by by repeating the determination in S4. If the determination in S4 is affirmative, the performance (output) of the noise tune is started in S5. FIG. 17 exemplifies a microphone input level adjustment screen displayed on the video display device 12 after the performance of the noise tune is started, and the input level of the sound field setting microphone 48 is referred to while referring to this screen. Is adjusted to an appropriate value.

  Next, in S6 corresponding to the operation of the frequency characteristic calculation means, the DSP frequency analyzer 46 converts the frequency characteristics of the noise sound collected (input) by the sound field setting microphone 48 corresponding to the sound information input means. Is calculated. FIG. 18 is a diagram illustrating a frequency characteristic measurement screen displayed on the video display device 12 in S6. Next, in S7, it is determined whether or not manual (manual) operation setting with reference to the calculation result in S6. If the determination in S7 is affirmative, in S8, after the output characteristics of the DSP 44 are manually changed by rotating and pressing the operation knob 25, in S12, it is determined whether or not the output characteristics are stored. Is determined, but if the determination in S7 is negative, the output of the DSP 44 is determined in S9 such that the frequency characteristic of the noise sound calculated in S6 matches the predetermined recommended frequency characteristic. After the characteristics are automatically changed, it is determined in S10 whether or not fine adjustment of the output characteristics is performed by manual operation. FIG. 19 is a diagram exemplifying an output characteristic setting screen displayed on the video display device 12 in S9. When the setting is completed, an output characteristic setting completion screen as shown in FIG. Is displayed.

  If the determination in S10 is negative, that is, if it is determined that the fine adjustment of the output characteristics by manual operation is not performed, the process in S12 is performed, but if the determination in S10 is affirmative, that is, the manual operation is performed. If it is determined that the output characteristics of the DSP 44 are finely adjusted in S11 by rotating and pressing the operation knob 25 in S11, the output characteristics of the DSP 44 automatically set in S9 are finely adjusted in S11. Is performed. FIG. 21 shows an example of the output characteristic manual adjustment screen displayed on the video display device 12 in S11. The upper waveform in the screen has a predetermined recommended frequency characteristic (or is corrected by environment setting or the like). The lower waveform in the screen shows the output characteristic of the DSP 44 set in S9. At the stage where the automatic setting has been performed in S9, the output characteristics of the upper and lower stages match. In the lower waveform, the equalizing set value is represented by a thick horizontal line, and the operation knob 25 is rotated to match a predetermined frequency band, and pressed to select the frequency band, and then the operation knob 25 is rotated. Thereby, the equalizing set value of the frequency band can be adjusted by manual operation. Further, in S11, a desired karaoke music can be output by inputting a music selection number, and setting can be performed while actually listening to the performance.

  If the determination in S12 is negative, that is, if it is determined that the output characteristics will not be saved, it is determined in S14 whether or not transmission and reception of the output characteristics are performed, but the determination in S12 is affirmative. In other words, if it is determined that the output characteristics are to be stored, the DSP 44 set in S8, S9, or S11 in the characteristic database of the hard disk 32 in S13 corresponding to the output characteristic storage means. Is stored, it is determined in S16 whether or not the sound field setting operation has been completed. FIG. 22 is a diagram exemplifying an output characteristic storage screen displayed on the video display device 12 in S13. The output characteristics after setting can be stored in any of the storage areas of the memories 1 to 5. ing.

  If the determination in S14 is denied, that is, if it is determined that the transmission / reception of the output characteristics is not performed, the process of S16 is performed. If it is determined that the karaoke apparatus 10 is connected to the host server 68, the local server 70, or another karaoke apparatus 10 via the communication line 67 or the cable 69 in step S15 corresponding to the output characteristic transmitting / receiving means 71. After the transmission and reception of the output characteristics are performed, the process of S16 is performed. If the determination in S16 is denied, that is, if it is determined that the sound field setting operation has not been completed, the processing in S6 and subsequent steps is executed again. If it is determined that the processing is to be terminated, the routine is terminated accordingly. In the above control, S8, S9, and S11 correspond to the operation of the output characteristic changing means, that is, the operation of the DSP 44.

  As described above, according to the present embodiment, in an environment where the karaoke apparatus 10 as a music reproducing apparatus is used, the sound field setting as sound information input means for inputting sound information output from the karaoke apparatus 10 is performed. Frequency analyzer and a DSP frequency analyzer 46 (S6) which is a frequency characteristic calculator for frequency-analyzing the sound information inputted by the sound field setting microphone 48 and calculating a frequency characteristic indicating a gain for each of a plurality of frequency bands. ) And an output characteristic change that changes the output characteristic of the predetermined noise sound output from the karaoke apparatus 10 calculated by the DSP frequency analyzer 46 so as to match a predetermined recommended frequency characteristic. Since it includes the DSP44 (S8, S9, S11) which is a means, there is no need for any specialized knowledge about sound to set the sound field.That is, it is possible to provide the karaoke apparatus 10 that can easily realize the optimum sound field according to the use condition.

  In addition, the DSP 44 may be configured in accordance with various conditions such as an environment in which the karaoke apparatus 10 is used or a customer layer to be used, for example, a predetermined time zone, a customer layer in which the karaoke apparatus 10 is used, temperature and humidity. Since the output characteristics are corrected, there is an advantage that more detailed sound field setting can be performed.

  Further, since the DSP 44 can change the output characteristics of the karaoke apparatus 10 according to a predetermined manual operation, the DSP 44 automatically sets the sound field according to the use conditions and then finely adjusts the output characteristics by the manual operation. Settings such as adjustment can be made, and there is an advantage that finer sound field setting can be performed.

  In addition, since it includes the hard disk 32 (S13) which is an output characteristic storing means for storing the output characteristics of the karaoke apparatus 10 changed by the DSP 44, the output characteristics according to a plurality of use conditions are respectively set in advance by the DSP 44. There is an advantage that the information can be read out as appropriate and applied to the karaoke apparatus 10.

  Also, since it includes the output characteristic transmission / reception means 71 (S15) for transmitting and receiving the output characteristic of the DSP 44 to and from the host server 68, the local server 70, or another karaoke apparatus 10, it is actually set by the DSP 44. The output characteristic of the karaoke apparatus 10 is transmitted to the host server 68 as a recommended value, or transmitted to the karaoke apparatus 10 as an output characteristic applied to another karaoke apparatus 10 or actually output by the other karaoke apparatus 10. There is an advantage that the set output characteristics can be received from the karaoke apparatus 10 or the local server 70.

  As described above, the preferred embodiments of the present invention have been described in detail with reference to the drawings. However, the present invention is not limited to these embodiments, and may be implemented in other embodiments.

  For example, in the above-described embodiment, the sound field setting microphone 48 is provided as sound information input means exclusively used for sound field setting. However, the sound field setting microphone 48 may not necessarily be provided. For example, the microphone 22 for inputting voice when performing karaoke may be used for setting a sound field.

  In the above-described embodiment, the karaoke apparatus 10 is connected to the host server 68 of the karaoke service providing company via the communication line 67 and to the local server 70 for each shop via the cable 69 and the like. However, for example, in a mode in which the local server 70 is connected to the host server 68 of the karaoke service provider and collectively manages information distributed to a plurality of karaoke apparatuses 10, etc. 10 need not necessarily be directly connected to the host server 68. Further, a local server 70 is not provided for each store, and a predetermined karaoke device 10 is connected as a host device to a host server 68 of a karaoke service providing company to collectively distribute information distributed to a plurality of karaoke devices 10. A mode of management is also conceivable. In this case, each karaoke apparatus 10 is connected to a predetermined karaoke apparatus 10 which is its host apparatus via a cable 69 or the like, but need not necessarily be directly connected to the host server 68.

  In the above-described embodiment, the correction of the output characteristics by the DSP 44 is performed by calculating an average value of the gain in each frequency band in the correction frequency characteristics corresponding to the plurality of conditions stored in the characteristic database and the recommended frequency characteristics. The average value is used as a recommended frequency characteristic. For example, a predetermined internal correction process is performed without outputting the noise music and performing sound collection by the sound field setting microphone 48. The output characteristics may be changed by the operation. This eliminates the need to output the noise sound each time the correction is performed, and has the advantage that the sound field correction can be performed between performances even when the user is performing a karaoke performance.

  In the above-described embodiment, the DSP 44 automatically changes its output characteristic so that the frequency characteristic of the noise sound matches the recommended frequency characteristic. A curve 72 indicating the frequency characteristic of the noise sound may be displayed and a curve 74 indicating the recommended frequency characteristic may be displayed, and the output characteristic may be changed by a manual operation. According to such an embodiment, an optimal sound field according to use conditions can be easily realized without requiring any specialized knowledge about sound to set the sound field.

  In the above-described embodiment, the DSP 44 as the output characteristic changing unit and the DSP frequency analyzer 46 as the frequency characteristic calculating unit are provided as separate devices from the CPU 26. It may be a function.

  In the above-described embodiment, the operation panel 24 is provided with an operation knob 25 for setting a sound field. However, the operation knob 25 is used as a volume adjustment knob or the like during a normal karaoke performance. It may be present, and does not necessarily have to be a dedicated knob. Further, a mode in which the remote controller 54 is used as an operation device for setting a sound field is also conceivable.

  Although not specifically mentioned in the above-described embodiment, the sound field setting may be a sound field in an indoor use environment such as a karaoke box or a sound field in an outdoor use environment. It may be something.

  In addition, although not specifically exemplified, the present invention is embodied with various changes without departing from the spirit thereof.

FIG. 1 is a block diagram showing a configuration of a karaoke apparatus as an example of a music reproducing apparatus to which the present invention has been applied. FIG. 2 is a block diagram illustrating a configuration of a DSP provided in the karaoke apparatus of FIG. 1. FIG. 2 is a diagram illustrating an operation unit of a remote control provided in the karaoke device of FIG. 1. FIG. 2 is a functional block diagram illustrating a main part of a sound field setting function provided in the karaoke apparatus of FIG. 1. FIG. 2 is a diagram illustrating a sound field setting by a CPU in the karaoke apparatus of FIG. 1. It is a curve which shows the correction frequency characteristic corresponding to from 11:00 am to 3:00 pm. It is a curve which shows the correction frequency characteristic corresponding to from 3:00 pm to 8:00 pm. It is a curve which shows the correction frequency characteristic corresponding to 8:00 pm to 11:00 am. It is a curve which shows the correction frequency characteristic corresponding to the user who is a teenager or a twenties age. It is a curve which shows the correction frequency characteristic corresponding to the user who is 30 years old. It is a curve which shows the correction frequency characteristic corresponding to the user who is 40 years or older. It is a curve which shows the correction frequency characteristic corresponding to the use environment of temperature 18 degreeC and humidity 50%. 3 is a flowchart illustrating sound field setting control by a CPU in the karaoke apparatus of FIG. 1. FIG. 2 is a diagram illustrating a sound field setting screen displayed on the video display device in FIG. 1. FIG. 2 is a diagram illustrating a microphone preparation screen displayed on the video display device in FIG. 1. FIG. 2 is a diagram exemplifying a caution screen displayed on the video display device in FIG. 1 indicating that a sound field setting microphone is not connected. FIG. 2 is a diagram illustrating a microphone input level adjustment screen displayed on the video display device in FIG. 1. FIG. 2 is a diagram illustrating a frequency characteristic measurement screen displayed on the video display device of FIG. 1. FIG. 2 is a diagram illustrating an output characteristic setting screen displayed on the video display device in FIG. 1. FIG. 2 is a diagram illustrating an output characteristic setting completion screen displayed on the video display device in FIG. 1. FIG. 2 is a diagram illustrating an output characteristic manual adjustment screen displayed on the video display device in FIG. 1. FIG. 2 is a diagram illustrating an output characteristic storage screen displayed on the video display device of FIG. 1.

Explanation of reference numerals

10: Karaoke device (music playback device)
32: Hard disk (output characteristic storage means)
44: DSP (output characteristic changing means)
46: DSP frequency analyzer (frequency characteristic calculating means)
48: Microphone for setting sound field (voice information input means)
68: Host server 70: Local server 71: Output characteristic transmitting / receiving means

Claims (7)

A music playback device for outputting a desired music piece selected and input from a plurality of music pieces,
Sound information input means for inputting sound information output from the music playback device in an environment where the music playback device is used;
Frequency characteristic calculating means for frequency-analyzing the sound information input by the sound information input means and calculating a frequency characteristic indicating a gain for each of a plurality of frequency bands;
An output characteristic change that changes the output characteristic of the music reproducing device so that the frequency characteristic of the predetermined sound information output from the music reproducing device calculated by the frequency characteristic calculating means matches a predetermined recommended frequency characteristic. And a means for reproducing music. 2. The music reproducing apparatus according to claim 1, wherein said output characteristic changing means corrects an output characteristic of said music reproducing apparatus according to a predetermined time zone. 3. The music reproducing apparatus according to claim 1, wherein the output characteristic changing unit corrects an output characteristic of the music reproducing apparatus according to a customer class using the music reproducing apparatus. 4. The music reproducing device according to claim 1, wherein said output characteristic changing means corrects output characteristics of said music reproducing device according to temperature and humidity. 5. The music reproducing apparatus according to claim 1, wherein said output characteristic changing means is capable of changing an output characteristic of said music reproducing apparatus according to a predetermined manual operation. The music reproducing apparatus according to any one of claims 1 to 5, further comprising output characteristic storing means for storing output characteristics of the music reproducing apparatus changed by the output characteristic changing means. 7. The music reproducing apparatus according to claim 1, further comprising an output characteristic transmitting / receiving means for transmitting / receiving output characteristics of said music reproducing apparatus to / from a predetermined server or another music reproducing apparatus.

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