JP2007103004A - Electronic apparatus and method for retrieving title information of electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the convenience of an apparatus capable of registering title information by inputting the title information by an easier operation procedure. <P>SOLUTION: An electronic apparatus is provided with a voice collecting means for collecting user's voice, a storage means for storing the user's voice collected by the voice collecting means and a registration control means for executing control for registering the voice stored in the storage means as title information correspondingly to audio data. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electronic device capable of registering title information indicating the title of data such as audio data recorded on a recording medium, for example, and a title information search method for the electronic device.

  For example, as a recording medium on which audio data as music is recorded, a CD (Compact Disc) dedicated to reproduction is widely known. As a recording medium capable of rewriting audio data, for example, a magneto-optical disk MD (Mini Disc) is widely used.

  In an MD recorder / player capable of recording / reproducing with respect to the above-described MD, title information such as a disc name that is a title for each disc and a track name that is a title for each track as a song is stored. You can enter and register. Further, even in a CD player capable of playing a CD, similarly, title information can be input and registered by taking correspondence with management information called TOC (Table Of Contents) recorded on the CD. Is known.

Incidentally, the above-described title information is conventionally text information. Accordingly, when registering the title information, the user performs, for example, a predetermined operation to input arbitrary characters.
For this reason, the work performed by the user for registering the title information is relatively complicated and troublesome, and takes time.

  In view of the above-described problems, an object of the present invention is to improve the convenience of a device capable of registering title information by enabling input of title information by an easier work procedure.

  Therefore, an electronic device for registering audio data recorded on a storage medium with a user's voice, the sound collecting means for collecting the user's voice, and the user's voice collected by the sound collecting means The electronic apparatus is configured to include storage means for storing and registration control means for executing control for registering the audio stored in the storage means as title information in association with the audio data.

  An electronic device for searching audio data recorded on a storage medium by a user's voice, which collects the user's voice, and stores the user's voice collected by the sound collecting means Storage means, registration control means for executing control for registering the voice stored in the storage means in association with the audio data as title information, and the user's voice as a search condition. The title information and the title information by the user's voice registered by the registration control means are compared to determine whether or not they match, and the registration by using the user's voice by the determination means as a search condition The electronic device is configured to include search means for searching for the title information registered in the recording medium by the control means. .

As described above, according to the present invention, for example, audio signal data obtained by collecting voice uttered by a user can be registered as audio title information in association with data such as music. That is, the content of the audio title information is the audio itself converted into data.
For example, in the past, since the title information is character information, in registering the title information, a troublesome operation such as inputting characters by a predetermined operation has been forced, but in the present invention, Such an operation becomes unnecessary, and instead of this, a simple operation of collecting sound by a microphone or the like is sufficient.
In terms of hardware, the present invention uses the audio signal itself as the title information, so that the voice recognition process as described above is unnecessary. As a result, the expansion of the circuit scale can be suppressed, and a significant cost reduction can be realized.
In addition, by using the user's voice as title information as it is, it is possible to use the application more widely, such as a message or a message corresponding to certain data.

In addition, when presenting the audio title information, the audio signal data as the audio title information is output as audio, but this does not require, for example, audio recognition as described above. This means that the speech synthesis process is also unnecessary. In this respect, the circuit scale can be increased and the cost can be reduced.
In general, the synthesized speech is unnatural and difficult to hear. However, the present invention has an advantage that it can be easily heard because the voice recorded by the user is output as a title. .

In the case where the audio title information is output and presented as audio as described above, the data associated with the audio title information is output and output. In this case, the user is reproduced. The title of the data can be confirmed by voice, and there is no need to bother to confirm by looking at the display unit.
In addition, when outputting the data list, if the title information associated with the data to be output as this list is output by voice, the user can also output the title of the data list as a voice. Can be confirmed.

The audio signal data input as the search condition is compared with the audio signal data as the audio title information, and the data recorded on the recording medium is searched based on the comparison result.
Even with this configuration, as in the case described above, voice recognition processing is not necessary, and in practice, the audio signal data as the search condition and the audio signal data of the audio title information are based on the same user's voice. Since it is considered that there are many cases of voice, in this case, comparison processing for search can be performed with very high accuracy.

  For example, if a large capacity recording medium such as a hard disk is used as a data recording medium, and audio title information is recorded on the data recording medium together with data, for example, audio as audio title information is recorded. As an area for recording signal data, for example, it is easy to allocate a size larger than necessary corresponding to the number of songs required for normal use, and it is easy to secure and manage the area for recording audio title information. It can be.

  On the other hand, the audio title information may be recorded on a recording medium configured by a memory element. In this case, for example, the speed at which the audio title information is accessed is The speed can be increased, and accordingly, the registration of the audio title information and various control processes using the audio title information can be quickly executed.

Further, when the data recording medium is not a recording medium such as a hard disk, but is a recording medium on which data such as an original audio source such as CD or MD should be recorded exclusively, for example, Management information (TOC) is recorded. Therefore, the present invention is configured so that the TOC and the audio title information can be registered in association with each other.
With such a configuration, for example, even if an operation such as copying the contents of the data recording medium to the hard disk is not performed, as long as the data recording medium is loaded in the electronic device, the loaded data recording medium is loaded. Various functions can be realized using the audio title information registered corresponding to the TOC of the medium.
Thus, according to the present invention, a great improvement in convenience can be obtained as a device having a function capable of registering title information, and this can be realized advantageously in terms of cost.

  For example, when the present invention is applied to an in-vehicle device, for example, registration of audio title information and various functions using the audio title information can be performed by inputting audio, Since the presentation is output by voice, the driver can drive safely without being distracted by, for example, the operation on the operation unit or the display content of the display unit. That is, the improvement in convenience as the present invention is more effectively reflected.

Hereinafter, embodiments of the present invention as an electronic apparatus will be described. The electronic device of the present embodiment is assumed to be an in-vehicle audio device provided in, for example, an automobile.
The following description will be given in the following order.
1. Configuration of in-vehicle audio equipment Registration of audio title information (first embodiment)
3. 3. Output of title information during audio data playback 4. Output of title information when presenting a song list Search operation Registration of audio title information (second embodiment)
7). Registration of audio title information (third embodiment)

1. Configuration of In-Vehicle Audio Device FIG. 1 is a block diagram showing an internal configuration example of an in-vehicle audio device as an embodiment of the present invention.
A CD can be loaded into the CD player unit 1. Here, the CD player unit 1 may be configured such that, for example, a CD can be loaded into a CD insertion slot provided on the front panel of the vehicle-mounted device (not shown). Although not shown in the figure, a CD changer having a changer mechanism capable of storing a predetermined number of CDs may be adopted.

  The CD player unit 1 can reproduce the CD loaded in the reproducible position, perform necessary signal processing, and output it as digital audio data to the bus line 20. Has been.

The digital audio data output from the CD player unit 1 is first transferred to the first memory 2 and temporarily held. For example, the CD player unit 1 performs disk reproduction at a predetermined speed, and the digital audio data thus reproduced is temporarily stored in the first memory 2. Thereby, for example, a so-called shock proof function is also provided.
The digital audio data held in the first memory 2 is transferred to a DSP (Digital Signal Processor) 3. At this time, data is transferred to the DSP 3 in a predetermined data unit, for example, in synchronization with the signal processing timing of the DSP 3.
In the DSP 3, the input digital audio data is subjected to data compression processing in accordance with a predetermined data compression method, and if necessary, modulation processing suitable for data recording to the hard disk 4a described below is performed to provide a bus. Output to line 20.

  The digital audio data that has been subjected to signal processing by the DSP 3 is transferred to the hard disk driver 4. The data transfer at this time is performed in synchronization with the write timing to the hard disk 4a provided in the hard disk driver 4. The hard disk driver 4 writes the transferred digital audio data to the hard disk 4a.

As can be seen from the above description, in the present embodiment, the audio data recorded on the CD player 1 can be recorded so as to be copied to the hard disk 4a.
Here, as is well known, digital audio data recorded on a CD is managed in track units corresponding to music units. In the hard disk 4a, recording data is managed by a so-called file system, as represented by, for example, FAT (File Allocation Table). Therefore, when audio data in units of tracks is copied from the CD to the hard disk 4a, the data in units of tracks can be managed as one file in the directory format by the file system in the hard disk 4a.

As for the hard disk 4a, those capable of recording large-capacity data of several gigabytes have become widespread in recent years. Accordingly, a plurality of CD digital audios are stored in the hard disk 4a. Data can be easily recorded. Further, as described above, the compressed digital audio data is recorded on the hard disk 4a, so that the number of recordable copy files can be increased.
Then, by copying the CD data to the hard disk 4a as described above, the user can arbitrarily create a music library using, for example, a CD owned by the user.

When playing back the digital audio data recorded on the hard disk 4a, the hard disk driver 4 reads out the digital audio data of the file number designated by the control unit 5 from the hard disk 4a. The read digital audio data is first transferred to the first memory 2 and temporarily held therein.
The digital audio data held in the first memory 2 is transferred to the DSP 3 at a timing corresponding to the signal processing timing of the DSP 3, where demodulation processing and data decompression processing are executed, and again the first memory 2 is transferred. The demodulated digital audio data transferred to the first memory 2 is transferred to the audio output unit 9. At this time, for example, data is transferred from the first memory 2 to the audio output unit 9 at a timing synchronized with a signal processing speed of a required functional circuit unit provided in the audio output unit 9.

In the audio output unit 9, for example, the transferred digital audio data is converted into an analog audio signal by the D / A converter 10. Thereafter, the required audio signal processing by the audio signal processing unit 11 is executed.
Here, in the audio signal processing unit 11, for example, various signal processing relating to output audio such as volume adjustment and sound quality adjustment performed on the operation unit 14 can be executed. Finally, for example, amplification and the like are performed and output to the speaker 17, whereby the digital audio data recorded on the hard disk 4a is output as sound.
Here, the audio signal processing unit 11 performs signal processing on the audio signal converted into an analog signal by the D / A converter 10, but for example digital audio before being converted into an analog signal It may be configured to perform signal processing on data.
Depending on the configuration, the audio output unit 9 can also input digital audio data as title information registered as described later and output it as audio.

As described above, in the present embodiment, the digital audio data reproduced by the CD player unit 1 can be copied to the hard disk 4a, and the digital audio data recorded on the hard disk 4a can be reproduced. It is also possible to directly output digital audio data reproduced by the CD player unit 1 as reproduced audio.
That is, digital audio data reproduced by the CD player unit 1 is transferred to the first memory 2 and temporarily stored, and then transferred from the first memory 2 to the audio output unit 9 as reproduction audio data. Is done. As a result, the digital audio data reproduced by the CD player unit 1 is output as reproduced audio from the audio output unit 9 via the speaker 17.
In the present embodiment, the digital audio data reproduced by the CD player unit 1 is transferred to both the hard disk driver 4 and the audio output unit 9 at a predetermined timing as appropriate under the control of the control unit 5. Thus, it is possible to execute the operation of copying to the hard disk 4a while monitoring the sound output of the digital audio data currently being played back by the CD player unit 1.

In the present embodiment, as will be described later, the sound produced and collected by the user is recorded on the digital audio data recorded on the hard disk 4a or the CD loaded by the CD player unit 1. The title information can be registered in correspondence with the digital audio data.
As title information, a so-called file name or track name can be registered in file / track units, and in addition to this, it can also be registered as a disc name in CD units as CDs.

When this title information is registered, the sound in the vehicle when the user utters the sound is picked up by the microphone 15 and the microphone 16. Here, the microphone 15 is mainly provided at a position where the user's voice can be picked up, and the microphone 16 is provided at a position where the sound as ambient noise other than the user voice can be picked up mainly. It is supposed to be.
The sound collected by the microphone 15 and the microphone 16 is input to the sound processing unit 6.

Ambient noise is also mixed in the user's voice collected by the microphone 15. Therefore, the noise canceller 8 subtracts the surrounding sound picked up by the microphone 16 from the sound picked up by the microphone 15, thereby obtaining the user's sound signal in which the surrounding noise is canceled.
In the audio processing unit 6, audio signal data is obtained by converting the analog audio signal input from the microphone side into a digital signal by the A / D converter 7.
Note that, as a configuration in the audio processing unit 6, a noise canceller 8 is provided in front of the A / D converter 7 so that noise cancellation is performed on the analog audio signals collected by the microphones 15 and 16. On the contrary, the noise canceller 8 may be provided at the subsequent stage of the A / D converter 7 so that the noise cancellation may be performed after the audio signals collected by the microphones 15 and 16 are converted into digital audio signals.

As described above, the voice processing unit 6 performs noise cancellation on the voice uttered by the user, converts it into voice signal data, and outputs it.
The audio signal data obtained in this way is recorded on a predetermined recording medium and then registered as title information. That is, in this embodiment, the audio signal data obtained by recording the user's voice is used as the title information.
Note that the recording destination of the audio signal data as the title information differs depending on the configuration as an embodiment described later. Therefore, the subsequent processing for the title information output from the audio processing unit 6 will be described later in each embodiment.
In the following, the title information obtained by converting the voice uttered by the user into voice signal data will be referred to as “voice title information”.

Here, in the voice processing unit 6, when the collected user voice is converted into voice signal data, the method is not particularly limited. For example, the voice processing unit 6 does not need to have particularly high sound quality. Therefore, the ADPCM (Adaptive Differential Pulse Code Modulation) method can be adopted. If the ADPCM method is employed, sound signal data can be obtained with a relatively small amount of data while ensuring sound quality sufficient for practical use.
In this ADPCM method, for example, as shown in FIG. 2A, in order to sample a sound signal waveform according to a predetermined sampling frequency, the basic quantization width Δ is adaptively changed for each sampling. This information is encoded into 3-4 bit data.
For example, in this case, as shown in FIG. 2B, an example is shown in which 4-bit information is used for each sampling period. In the case of 4 bits, the upper 1 bit indicates the polarity when changing the quantization width Δ, and the lower 3 bits determine how many times the quantization width Δ is to be increased.

Here, if the sampling period as the ADPCM system is 4 KHz, the bit rate is 4 K (Hz) × 4 (bits) = 16 Kbps.
It will be represented by Therefore, for example, assuming that one audio title information is uniformly 3 seconds of audio, and trying to register titles for 600 songs (files),
16K × 3 × 600 = 28.8M bits, and 28.8M bits are required.
Here, for example, when 28.8 Mbit audio title information is stored in a memory such as an EEPROM or a flash memory, a 32 Mbit memory is practically required. A memory having a moderate capacity can be obtained at low cost. In other words, it can be said that it is sufficiently realistic to register the audio title information for 600 songs and store this information.

  The second memory 12 is a memory for temporarily storing or storing the audio signal data when registering the audio signal data obtained by the audio processing unit 6 as audio title information. Details will be described later.

The display unit 13 is provided in the in-vehicle audio device, and includes a display device such as a liquid crystal display, for example. Then, for example, under the control of the control unit 5, required contents corresponding to the operation status at that time are displayed.
The operation unit 14 is an operation part provided with operation keys and the like for performing various operations on the in-vehicle audio device. When an operation is performed on the operation unit 14, operation information corresponding to the operation is transmitted to the control unit 5 via the bus line 20. The control unit 5 controls the required functional circuit unit so that an operation according to the operation information is obtained.

  The control unit 5 includes, for example, a CPU on which a so-called real-time OS (Operation System) is mounted, a dedicated gate array that controls data transfer between the functional circuit units via the bus line 20, and the like. As described above, control is performed on each functional circuit unit in accordance with an operation on the operation unit 14, and data transfer control between the functional circuit units is performed.

2. Registration of audio title information (first embodiment)
Next, the operation of registering audio title information as the first embodiment will be described with reference to the flowchart of FIG.
In the first embodiment, audio title information is registered in units of files in association with the digital audio data copied to the hard disk 4a, and the title information is recorded on the hard disk 4a.

  In the process shown in FIG. 3, when a user performs a predetermined operation, digital audio data of a certain track reproduced by the CD player unit 1 is copied to the hard disk 4a as a file. The processing in the case where the title information of digital audio data to be copied as a file is registered. That is, here, it is assumed that the audio title information for the digital audio data being copied as a file to the hard disk 4a can be registered. The process shown in this figure is executed by the control unit 5.

In the process shown in this figure, first, it waits for input as a title sound in step S101. For example, when inputting the title sound, the user may perform a key operation for inputting the title sound, and then emit the sound to the microphone within a predetermined time.
In step S101, when it is determined that the voice uttered by the user is input to the voice processing unit 6 via the microphones 15 and 16, the process proceeds to step S102.
In step S102, control is performed on the audio processing unit 6 so that the input audio is converted into audio signal data as audio title information. Then, in the next step S103, control for transferring and writing the audio signal data as the audio title information obtained by the audio processing unit 6 to the second memory 12 is executed.

In the next step S104, it is determined whether or not the recording of the digital audio data reproduced by the CD player unit 1 and copied to the hard disk (denoted as “HD” in the figure) 4a is completed. If it is determined here that the recording has not ended, a standby process is executed in step S105, and the process returns to step S104.
When it is determined in step S104 that the recording of the digital audio data to the hard disk 4a is completed, the process proceeds to step S106, and audio signal data as audio title information is obtained. The data is transferred from the second memory 12 to the hard disk driver 4 and recorded on the hard disk 4a.

Here, data to be recorded / reproduced with respect to the hard disk 4a is managed by the file system as described above. Management of this file system is executed by the control unit 5.
Therefore, in step S107, the audio signal data recorded on the hard disk 4a by the process of step S106 is registered as audio title information associated with the file as digital audio data copied to the hard disk 4a. Management on the file system is performed.

  Then, for example, on the file system, as shown in FIG. 4, recording is performed on the hard disk 4 a by performing the above-described processing every time the user performs an operation for registering audio title information for each file. The digital audio data file and the audio title information are managed.

  FIG. 4 shows the file numbers of files of digital audio data recorded on the hard disk 4a. The cluster address of the file as digital audio data recorded on the hard disk 4a corresponding to each file number. Information is displayed. That is, the recording area in which the digital audio data file is recorded is shown for each file number. File name information is associated with these file numbers and cluster addresses and managed. That is, audio signal data as audio title information is associated. Although not shown here, if necessary, the cluster address on the hard disk 4a on which the audio title information as the file name is recorded may be described.

For example, in the case of FIG. 4, the audio signal data as the audio title information A is associated with the file of the file number 001 as the file name.
In the same manner, each of the audio signal data as the audio title information B to D... Is associated with the file having the file numbers 002 to 004.

  On the hard disk 4a, it is also possible to manage the contents copied from a certain CD in, for example, a certain folder by the above-described file system. If the audio system is managed by the file system so as to be associated with the audio title information, the contents of one CD copied to the hard disk 4a can be collected and registered as a disk name.

  Further, FIG. 3 shows a case where the process for registering the audio title information is being performed when the digital audio data reproduced from the CD player unit 1 is copied to the hard disk 4a. However, for example, it is possible to register the audio title information corresponding to the digital audio data already copied to the hard disk 4a.

3. Output of title information during audio data playback For example, conventionally, when digital audio data as a file or track is played back, title information registered as character information is output to a display unit or the like by characters. Was presenting the title to be played.
On the other hand, in the present embodiment, based on the audio title information registered as exemplified in FIG. 4 above, the title of the file to be reproduced is output by outputting the audio title information as audio when reproducing the file. Can be presented to the user.
Therefore, next, an operation for outputting the title by sound during file reproduction will be described with reference to the flowchart of FIG. Here, the configuration in the case where the title is output by sound immediately before the reproduction of the file is started is shown. Further, the control unit 5 also executes the processing shown in FIG.

In the process shown in FIG. 5, first, in step S201, the process waits until the reproduction start timing of a certain file among the files recorded on the hard disk 4a is reached.
Here, for example, the case of reaching the file reproduction start timing includes a case where the user designates a certain file and performs an operation for starting reproduction. In one case, when the file has been played continuously according to a predetermined file order, the playback of the file that has been played so far has ended and the playback of the next file has started. Is mentioned. If such a situation has been reached, a positive result is obtained in step S201, and the process proceeds to step S202.

In step S202, the audio title information corresponding to the file number of the file to be reproduced is searched by referring to the current management status of the file system. Then, the hard disk driver 4 is controlled to read out the audio signal data as the audio title information searched from the hard disk 4a.
In the next step S203, the audio signal data as the audio title information read from the hard disk 4a is transferred to the audio output unit 9. Thus, the audio output unit 9 outputs audio signal data as audio title information from the speaker 17 as audio. That is, prior to file reproduction, the name of the file to be reproduced is output and presented by the user's own voice previously registered by the user.

  Then, in the subsequent step S204, control for starting the reproduction of the file whose reproduction should be started in the previous step S201 is executed. As a result, the reproduced audio of the file is output from the speaker 17 following the audio as the audio title information.

4). Output of title information when presenting a song list In the present embodiment, it is also possible to present a digital audio data file as a song recorded in the hard disk 4a as a song list. Is also configured to read the list aloud.

FIG. 6 shows processing operations executed by the control unit 5 for this purpose.
For example, in the processing shown in this figure, first, in step S301, as a user operation on the operation unit 14, an operation for outputting a music list is awaited. When it is determined that an operation for outputting the music list is performed, the process proceeds to step S302.

In step S302, control for displaying and outputting the music list to the display unit 13 is executed.
For this purpose, the control unit 5 searches the digital audio data file recorded on the hard disk 4a by the file system, for example, for a file that meets the conditions specified by the user, and the searched file is, for example, the user. Displays a list according to the sort order specified by the operation.

FIG. 7 shows an example of the display form of the music list displayed on the display unit 13 in this way.
In this case, a list number indicating the list order is first displayed on the display unit 13. This corresponds to the sort order, for example. In this case, the list order is the file number order, and an example is shown in which the files are listed according to the file number order. Corresponding to each file number, the recording date and time when the file is recorded on the hard disk 4a is shown. It should be noted that the display example of the music list is not limited to that shown in this figure, and can be changed.

If the display of the music list in step S302 is completed, the control unit 5 proceeds to step S303 and sets n = 1 for the variable n as the list number shown in FIG.
In the next step S304, a process for reading the audio title information of the digital audio data file corresponding to the list number n from the hard disk 4a is executed.
For this purpose, the file number of the digital audio data file displayed corresponding to the current list number n is specified. Then, the audio title information of the specified file number is searched by the file system, and control for reading out the digital audio information as the searched audio title information from the hard disk 4a is executed.
Then, in the next step S305, the digital audio information as the read audio title information is transferred to the audio output unit 9, so that the audio title information corresponding to the file currently set as the list number n is actually Is output as audio.
Here, for example, assuming that the process of step S305 is executed first under the situation where the display shown in FIG. 7 is performed, a list of files recorded on the hard disk 4a is displayed. The file name of the file number 001 presented as the number 1 is output as sound. The voice output at this time is the user's own voice recorded when the user registered the voice title information.

When the processing in step S305 is completed, it is determined in step S306 whether or not the current variable n is the maximum value. That is, it is determined whether or not the audio output of the audio title information for all the files presented as the music list has been completed. If there is still a file for which the audio output of the audio title information has not been completed among the files presented as the music list, the variable n is incremented in step S307, and the process of step S304 is performed. To return to. By repeating this process, the titles of the digital audio data files presented as a list are sequentially output as sound according to the list number order.
If a positive result is finally obtained in step S306, the process is terminated.
Although the processing operation is not shown here, a digital audio data file in which the title is output as audio when, for example, the user performs an operation for playback at the timing when the title is output as audio. Can be started.

5. Search Operation As can be understood from the above description, in the present embodiment, the user's own recorded voice is converted into a digital signal and registered as voice title information.
Therefore, in the present embodiment, for example, the following configuration can be adopted to search for a desired file from digital audio data files (or digital audio data in CD units) recorded on the hard disk 4a. .
That is, the user inputs the file title as a search condition. Then, a file search is performed by comparing the input audio signal as the search condition with the audio signal registered as the audio title information.
Accordingly, FIG. 8 shows a processing operation for realizing a file search using such user's voice as a search condition.

In the process shown in FIG. 8, first, in step S401, the process waits for the user's voice as a search condition to be input from the microphones 15 and 16.
For example, if the user performs a predetermined operation for starting the search and then inputs a voice to the microphones 15 and 16, it is determined that the voice at this time is the input of the search condition, and the process proceeds to step S402. To be.

In step S402, control is performed on the voice processing unit 6 so that the user's voice as a search condition collected by the microphones 15 and 16 is converted into voice signal data. In the next step S403, the audio signal data obtained as described above is held as search audio data by writing it into the second memory 12, for example. That is, it is handled as audio data as a search condition.
In the next step S404, the audio title information currently registered by the file system is read from the hard disk 4a in the order of file number, for example. Then, the search voice data stored in the second memory 12 is compared.
That is, the audio signal data as the audio title information and the audio signal data as the search audio data are compared with each other, and the data values are actually considered to be the same. It is determined whether or not an approximate rate greater than a predetermined value can be obtained.
Then, as a result of executing such processing, in the next step S405, it is determined whether or not there is determined audio title information that matches the search audio data. If a negative result is obtained, the process proceeds to step S409, and a warning indicating that there is no matching file as a search result is given in a predetermined output form. Here, the warning output may be, for example, a sound that may indicate an error, a display output based on a predetermined display content on the display unit 13, or a combination of both. . The routine is then exited.

On the other hand, if a coincidence determination is obtained in step S405, the process proceeds to step S406.
In step S406, a control process for outputting the audio title information from which the coincidence determination result is obtained from the speaker 17 as audio is executed. That is, the audio title information from which the matching determination result is obtained is read from the hard disk 4 a and transferred to the audio output unit 9.

Through the processing in step S406, the audio title information of the file determined as the search result is actually output as the user's voice.
The user can listen to the voice output as the voice title information and confirm whether or not this is the target file that he / she wanted to search. For example, after this sound is output, an operation indicating that the search result is OK can be performed on the operation unit 14 within a predetermined time.

  In step S407, this OK operation is waited for a predetermined time. When the OK operation is not performed within the predetermined time, the process returns to step S401, so that the user can input the voice as the search condition again and perform the search again.

On the other hand, if it is determined in step S407 that an OK operation has been performed within a predetermined time, the process proceeds to step S408.
In step S408, the file corresponding to the audio title information output in step S406 is determined as a regular search result. Then, this routine is exited.
Although not shown in this figure, for example, a control process for starting reproduction of the file determined in step S408 may be executed thereafter.

  As can be seen from the above description, in the present embodiment, for example, the file name of a digital audio data file recorded on the hard disk 4a can be registered as audio title information. The audio title information is not text information but information that is directly input by the user himself / herself as audio signal data. Then, using the audio title information as the audio signal data, for example, when playing a digital audio data file or outputting a song list, the file name is output as the audio itself, or the audio input by the user as a search condition, A search can be performed by comparing audio signals as audio title information.

For example, when title information is input and registered as character information as in the prior art, the user needs to perform an operation for character input on the operation unit. Further, if the search is based on the premise that the title information is character information, the title must be input as character information for inputting the search condition.
The input of such character information is troublesome and troublesome for general electronic devices because of the limited use of keys on the operation unit. In particular, in a vehicle-mounted device such as the present embodiment, a user as a driver must perform driving while gazing at the front, and therefore cannot perform a character input operation during driving. Therefore, registration and search of title information as described above cannot be performed unless the vehicle is stopped.

  On the other hand, in the present embodiment, the voice information produced by the user is converted into audio signal data, and the content of the title information is used as it is. Therefore, the user only has to speak the title to the microphone, and the title information can be safely registered even during driving. In addition, since the file is presented by voice, it is not necessary to check the title by looking at the display unit. In other words, the file can be confirmed by voice without looking at the display unit during driving.

In addition, as in the present embodiment, by registering information obtained by converting a voice uttered by a user into voice signal data as title information as it is, for example, so-called voice recognition processing becomes unnecessary. In addition, it is not necessary to execute speech synthesis processing when outputting title information as speech.
Therefore, in this embodiment, it is not necessary to provide a configuration for speech recognition processing and speech synthesis processing in order to realize the function for registering title information by speech, and the configuration is simpler and the cost can be reduced. It becomes possible to plan.

Further, for example, in the above-described embodiment, the case where title information is registered with respect to a CD source for reproduction only is shown. For example, digital audio data such as MD can be recorded. If the media is considered, due to the problem of its recording capacity, it is appropriate to use text information with a small amount of data as title information, and it is technically necessary to register and record audio information as title information. difficult.
The audio title information in this case is, for example, audio signal data for a relatively short period of time converted into a digital signal by the ADPCM method, so that the amount of data is not so large but is relatively large compared to character information data. For this reason, it is difficult to record audio title information on a recording medium such as an MD.

In contrast, in the present embodiment, a hard disk 4a is provided, and a digital audio data file and audio title information are recorded on the hard disk 4a.
Thereby, not only the digital audio data but also the recording capacity of the audio signal data as the audio title information can be obtained sufficiently. The management is also performed without any problem by the file system.

Further, in the above-described search operation of the present embodiment, the search condition is input as speech. However, in the normal use mode, the search is performed with the user who has previously registered the speech title information. It is assumed that users are often the same person. In particular, if it is an on-vehicle audio device as in this embodiment, the probability is high.
Therefore, in the case of the present embodiment, the audio signal input as the search condition and the audio as the audio title information are very approximate data. Therefore, for example, when a speech recognition process as described above is used and compared with a configuration in which a search is performed based on the speech recognition result, a considerably accurate search operation can be obtained.

6). Registration of audio title information (second embodiment)
In the registration of the audio title information as the first embodiment described above, the audio signal data as the audio title information is recorded on the hard disk 4a and managed on the file system together with the digital audio data file. Was adopted.
On the other hand, in the second embodiment, when registering the audio signal data as the audio title information, the audio title information is written and stored in the second memory 12. That is, in this case, the second memory 12 is used as a recording medium for recording audio title information. For this reason, in the second embodiment, the second memory 12 needs to be configured to include a nonvolatile memory such as an EEPROM or a flash memory. If the audio title information is stored in the memory element in this way, the time required for access is greatly reduced compared to, for example, a hard disk. In addition, various control processes using the audio title information can be executed more quickly.
Even in the second embodiment, the digital audio data associated with the audio title information is recorded on the hard disk 4a.

  FIG. 9 is a flowchart showing the audio title information registration process corresponding to the second embodiment. The audio title information registration process as the second embodiment is an operation for copying the digital audio data reproduced from the CD player unit 1 to the hard disk 4a, for example, as in the first embodiment. Although it may be executed in parallel, here, a process in the case of registering audio title information in association with digital audio data already copied to the hard disk 4a is taken as an example.

Prior to the processing shown in FIG. 9, for example, it is assumed that the user performs an operation for registering audio title information after selecting a digital audio data file in which audio title information is to be registered.
There are various ways of selecting the digital audio data file to which the audio title information should be registered. One is the digital audio data file being played in consideration of driving safety and the like. Can be treated as a selected file.
And after operation for registering audio title information is performed, the control part 5 transfers to the process after step S501. Here, the processing from step S501 to S502 is the same as the processing from step S301 to S302 shown in FIG. 3, and thus the description thereof is omitted here.

  In the next step S503, the digital audio information as the audio title information obtained in step S502 is transferred to the second memory 12 for writing. Thereafter, this audio title information is stored in the second memory 12.

  In the next step S504, the file system of the digital audio data file currently selected as the audio title information to be registered is specified by referring to the file system of the hard disk 4a, and this file number is read from the hard disk 4a. Reading and transferring to the second memory 12 for writing.

  Then, in the next step S505, the audio title information and the file number written in the second memory 12 by the previous processing are associated with each other on the second memory 12 and managed. To do. That is, registration processing of audio title information is executed.

For example, the user performs an operation for registering audio title information, and the process shown in FIG. 9 is executed each time. As a result, in the second memory 12, as shown in FIG. Title information is managed.
That is, one piece of audio title information is managed so as to be associated with each file number read and stored from the hard disk 4a. Here, a state is shown in which the audio title information A to D... Is associated with the file numbers 001 to 004.
Also in this case, the audio title information is obtained as the disc name corresponding to the digital audio data for one CD by writing the directory information of the folder corresponding to one CD as the file number by the file system of the hard disk 4a. It is possible to be managed.

Even when the audio title information is registered in the second memory 12 in this way, the output of the title information when the audio data is reproduced, the output of the title information when the music list is presented, and the search operation Can be done. In this case, when it is necessary to read the audio title information, it is read from the second memory 12 instead of the hard disk 4a.
If the audio title information needs to be associated with the digital audio data, such as reading out the digital audio data recorded on the hard disk 4a based on the audio title information, the audio title information is stored in the second memory 12. Refers to the file number associated with. Then, the digital audio data indicated by the referenced file number may be read from the hard disk 4a using the file system of the hard disk 4a.

7). Registration of audio title information (third embodiment)
In the first and second embodiments, the digital audio data to be associated with the audio title information is data recorded on the hard disk 4a.
Here, for example, in a CD, management information called TOC is recorded in the lead-in area, and the total reproduction time of the CD, the number of tracks, and each track according to the contents recorded in the TOC. The playback time and the like can be grasped. Therefore, this TOC information can be regarded as information unique to each CD.
Therefore, in the third embodiment, the TOC information read from the CD and the audio title information are registered in association with each other. The registration of audio title information as the third embodiment will be described below. In the following description, it is assumed that the audio title information is stored in the second memory 12 and registered. Therefore, also in this case, a non-volatile memory is employed as the second memory 12.

The user loads a CD for which title audio information is to be registered into the CD player unit 1. In the registration of the audio title information as the third embodiment, the TOC information is read from the CD loaded in the CD player unit 1 and is written and stored in the second memory 12, for example. The control unit 5 executes control.
Then, while performing a predetermined registration operation, the user applies to the microphones 15 and 16 a title sound as a track name corresponding to each track recorded on the CD or a title sound as a disc name corresponding to the CD itself. input. Again, in this case, the input voice is converted into voice signal data which is voice title information, and is written into the second memory 12.
Then, the control unit 5 performs registration in the second memory 12 so as to associate the written TOC with the audio title information.
If this procedure is performed for each CD, the audio title information can be registered in association with each other for a plurality of CDs as long as the capacity of the second memory 12 is sufficient.

When the audio title information is registered in this way, the actual management form on the second memory 12 is actually as shown in FIG. 11, for example.
That is, as shown in FIG. 11 (a), in the second memory 12, the TOC information read from different CDs is first stored as TOC files 1, 2,.
Each TOC file is stored with associated title data. As shown in FIG. 11 (b), the title information is stored in a manner such that, for example, the audio title information as a disc title is associated with each track recorded on the CD having the TOC file. To be formed.

The audio title information registered in such a management form can be used as follows when reproducing audio data.
For example, when a certain CD is loaded in the CD player unit 1, the control unit 5 compares the TOC content read from the loaded CD with the TOC content stored in the second memory 12. To do. If there is a TOC having the matched contents, the disc name recorded as the title data corresponding to the matched TOC can be read and the disc name can be output. When the CD player unit 1 reproduces a track and outputs sound, the sound title information associated with the track is read from the second memory 12 and output as sound when the track is reproduced. Can do.
According to the third embodiment, for example, the audio title information can be registered in correspondence with a plurality of CDs without providing the hard disk driver 4 for copying the recorded contents of the CD. It will be possible.

The present invention is not limited to the embodiment described above. For example, various operation modes for registering audio title information can be considered.
Further, the configuration as an in-vehicle audio device is not limited to that shown in FIG. 1, and another audio recorder / player unit such as MD or DAT may be employed instead of the CD player unit 1. I do not care. For example, regarding the third embodiment, an audio recorder / player unit corresponding to a recording medium having a format in which management information corresponding to the TOC is recorded may be used.
In this example, a hard disk is used as an example of a medium for copying digital audio data. However, other large-capacity disks such as a magneto-optical disk such as MO, a CD format capable of writing data, and a disk medium of DVD format are also available. Other media may be adopted. Further, if a recording medium having a large-capacity memory element becomes realistic in the future, such a medium may be used.
In addition, the present invention is not limited to in-vehicle devices, and can be applied to various electronic devices such as audio devices other than in-vehicle devices.

It is a block diagram which shows the structural example of the vehicle-mounted audio apparatus as embodiment of this invention. It is explanatory drawing for demonstrating an ADPCM system. It is a flowchart which shows the registration process of the audio | voice title information as 1st Embodiment. It is explanatory drawing which shows the audio title information managed by the file system of a hard disk corresponding to 1st Embodiment. It is explanatory drawing which shows the processing operation for the output of the audio title information at the time of file reproduction. It is explanatory drawing which shows the processing operation at the time of music list output. It is explanatory drawing which shows the example of a display form at the time of the output of a music list. It is explanatory drawing which shows the processing operation for the file search of this Embodiment. It is a flowchart which shows the registration process of the audio | voice title information as 2nd Embodiment. It is explanatory drawing which shows the audio | voice title information managed on memory corresponding to 2nd Embodiment. It is explanatory drawing which shows the audio | voice title information managed on memory corresponding to 3rd Embodiment.

Explanation of symbols

  1 CD player section, 2 first memory, 3 DSP, 4 hard disk driver, 4a hard disk, 5 control section, 6 audio processing section, 7 A / D converter, 8 noise canceller, 9 audio output section, 10 D / A converter, 11 Audio signal processing unit, 12 Second memory, 13 Display unit, 14 Operation unit, 15, 16 Microphone, 17 Speaker, 20 Bus line

Claims (18)

An electronic device for registering audio data recorded on a storage medium by a user's voice,
Sound collection means for collecting user's voice;
Storage means for storing the user's voice collected by the sound collection means;
Registration control means for executing control for registering the audio stored in the storage means as title information in association with the audio data;
An electronic device comprising:   2. The electronic apparatus according to claim 1, further comprising voice output means for outputting the user's own voice as the registered title information.   When reproducing and outputting the audio data recorded on the predetermined recording medium, the audio output means is configured to output the title information associated with the audio data to be reproduced and output as the user's own audio. The electronic apparatus according to claim 2, further comprising a sound output control unit that executes control on the electronic device.   3. The electronic apparatus according to claim 2, further comprising registration control means for registering the audio data list recorded on the predetermined recording medium in association with the title information.   When outputting a list of the audio data recorded on the predetermined recording medium, the sound is output so that the user's own sound as title information associated with the data to be output as the list is output as sound. The electronic apparatus according to claim 4, further comprising a voice output control unit capable of executing control on the output unit.   The electronic device according to claim 1, wherein the title information is a title name of the audio data. Search condition acquisition means for acquiring the sound obtained by the storage means for storing as a search condition;
Of the audio data as the title information registered by the registration control means, the audio data corresponding to the audio data as the title information determined to match the audio data as the search condition is used as a search result. Search result output means that can be output;
The electronic apparatus according to claim 1, further comprising:   2. The electronic apparatus according to claim 1, wherein the title information to be registered by the registration control unit is recorded on a predetermined recording medium on which the data is recorded. The title information to be registered by the registration control means is recorded on another recording medium different from the predetermined recording medium on which the data is recorded,
The electronic apparatus according to claim 1, wherein the other recording medium includes a memory element capable of storing the title information. The predetermined recording medium in which the data is recorded includes management information for managing recording or reproduction of the data together with the data.
The electronic device according to claim 1, wherein the registration control unit is configured to execute control for performing registration in association with the management information and the title information.   The electronic device according to claim 1, wherein the electronic device is a vehicle-mounted device.   The electronic device according to claim 9, wherein the memory element is a nonvolatile memory. An electronic device title information registration method for registering audio data recorded in a storage medium by a user's voice,
A sound collecting step for collecting the user's voice;
A storage step of storing the user's voice collected by the sound collection step;
And a registration control step of executing control for registering the audio stored in the storage step as title information in association with the audio data. An electronic device for searching audio data recorded on a storage medium by a user's voice,
Sound collection means for collecting user's voice;
Storage means for storing the user's voice collected by the sound collection means;
Registration control means for executing control for registering the audio stored in the storage means as title information in association with the audio data;
A voice determination unit that compares the title information newly input using the user's voice as a search condition with the title information by the user's voice registered by the registration control unit and determines whether or not they match;
An electronic apparatus comprising: search means for searching for the title information registered in the recording medium by the registration control means using the voice of the user by the determination means as a search condition.   15. The electronic apparatus according to claim 14, further comprising a warning unit that warns that there is a mismatch when the voice determination unit determines that they do not match. 15. The electronic apparatus according to claim 14, further comprising: an audio output unit that outputs the title information as the user's audio when it is determined by the audio determination unit that they match.   16. The electronic apparatus according to claim 15, wherein after the title information of the user is output by the voice output unit, a search result by the search unit is determined by performing an operation within a predetermined time. A method for retrieving title information of an electronic device for retrieving audio data recorded in a storage medium by a user's voice,
A sound collecting step for collecting the user's voice;
A storage step of storing the user's voice collected by the sound collection step;
A registration control step for executing control for registering the audio stored in the storage step as title information in association with the audio data;
A voice determination step of comparing the title information newly input as the search condition of the user's voice with the title information of the user's voice registered by the registration control step and determining whether or not they match;
And a search step for searching the title information registered in the recording medium by the registration control step using the voice of the user in the determination step as a search condition.

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