JPS63247800A - Voice data recording system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a sound source device that uses an IC memory as a storage medium, and in particular to an audio data recording device having a file structure that is effective when using an IC memory card. Regarding the method.

[Conventional technology]

Conventionally, as storage media for storing recorded audio data, playback-only devices use ROM, recordable devices use RAM for short-term recording, and long-term recording uses include magnetic disks and magnetic bubbles. is used. Among these, as a conventional technology related to an audio playback device using IC memory as a storage medium, for example,
A technique described in Japanese Patent No. 18998 and the like is known.

Hereinafter, an example of this kind of conventional technology will be explained with reference to the drawings.

FIG. 5 is a block diagram showing an example of a conventional audio reproduction device, and FIG. 6 is a diagram showing an example of audio output by the device shown in FIG. In FIG. 5, 1.2 is an audio memory, 3 is an audio data control section, 4 is an audio reproduction section, 6 is an audio editing processing section, 7 is an audio file, and 44 is an output terminal.

As shown in FIG. 5, the conventional speech synthesis and playback device includes two voice memos 1, 2, a voice data control section 3, a voice playback section 4, a voice editing processing section 6, and a voice file 7. It is composed of.

In FIG. 5, the audio memory 1 stores non-fixed audio data that needs to be changed depending on the audio playback content, and the audio memory 2 stores fixed audio data that does not need to be changed depending on the audio playback content. I remember. Also,
The audio file 7 is a file that can store a large amount of non-fixed audio data, and the audio data in the file 7 is loaded into the audio memory 1 and used as needed.

When reproducing audio based on an instruction from an external device (not shown), the audio editing processing unit 6 inputs non-fixed audio data from the audio memory 1 and fixed audio data from the audio memory 2 via the audio data control unit 3. After reading and editing the audio data as appropriate, the edited audio data is sent to the audio playback section 4. The audio reproduction section 4 converts this audio data into an analog signal and outputs it to the output terminal 44. The audio signal thus obtained at the output terminal 44 is, for example, a reproduced sound consisting of a combination of fixed sounds 31 and 33 and non-fixed pre-32° 34, as shown in FIG. The audio editing processing unit 6 has audio output editing information, and based on this information, loads non-fixed audio data necessary for the audio playback output described above from the audio file 7 into the audio memory 1, and Used for audio playback output.

[Problem that the invention seeks to solve]

The prior art uses an IO type auxiliary storage device such as a magnetic disk as an audio file, and also uses an IC memory as an audio memory that is a means of storing audio data used for audio reproduction output. . For this reason, in the prior art, it is essential to load audio data into an audio memory that stores non-fixed audio data than an audio file; The problem is that it is essential to calculate the address and data length of the voice data. Furthermore, the conventional technique has a problem in that the audio data to be reproduced must exist in the audio memories of two IC memories.

The purpose of the present invention is to solve the problems of the prior art described above,
It is an object of the present invention to provide an audio data recording method in a speech synthesis and playback device that is virtually equivalent to having a large-capacity external storage device.

[Means for solving problems]

According to the present invention, the above object is to provide an I/O device that can be used as a voice memory, which can directly specify an internal address, and which can be easily attached to and detached from a circuit.
A C memory card is used, and in this IC memory card, audio data is divided into segments and held, and a directory indicating the start address, end address, or audio data length by a relative address from the start of the IC memory card is held. This is achieved by

[Effect]

IC memory card is MPU (microprocessor)
Data can be accessed by directly specifying an internal address from a DMAC (direct memory access controller), etc., so a unique address can be set within the device, and the data can be accessed at the same speed as normal IC memory. It is possible to read and write data, and it can be used as a high-speed audio data memory without loading from other files. In addition, by providing a directory section in the IC memory card, each time the national address within the device at the beginning of the IC memory card is added to the first address, last address, or data length of the audio data recorded in this directory section, , the unique address within the device of each voice narrator can be easily known.

〔Example〕

Hereinafter, one embodiment of the audio data recording method according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a speech synthesis and playback device to which the present invention is applied, and FIGS. 3 and 4 are flowcharts explaining the recording and reproducing operations.

1 and 2, 5 is an audio input section, 8 is a control data bus, 10 is an audio data bus, 21 is a directory section, 22 is a memory map, 41 is an )/A converter, 4
2.53 is a low pass filter, 43.52 is an amplifier, 5
1 is an input terminal, 54 is an A/D converter, and other symbols are the same as those explained in FIG. 5.

As shown in FIG. 1, an embodiment of the speech synthesis device to which the present invention is applied includes two speech memories 1 and 2, an speech data control section 3, an speech editing processing section 6, and an audio reproduction section 4. , and an audio input section 5. The audio reproduction section 4 includes a D/A converter 41 and a low-pass filter 42.
, an amplifier 43, and the audio input section 5 includes an amplifier 52, a low-pass filter 53, and an A/D converter 54.

In the above-mentioned configuration, the audio memories 1 and 2 are memories that hold digitized audio data, are configured by IC memory cards, and are removable from the audio data bus 10 using connectors (not shown) or the like. . The voice memory 1 holds voice data of syllables whose voice is frequently played back, and the voice memory 2 holds voice data of syllables whose voice is played back at a low frequency, or proper nouns and the like.

The audio data bus 10 is connected to the two audio memos IJI and
2 and the audio data control unit 3,
The control data bus 8 is a bus used by the audio editing processing section 6 to control the audio data control section 3.

The audio input section 5 has a function of amplifying the analog audio signal to be recorded inputted from the input terminal 51, converting it into a digital signal, and transmitting it as audio data to the audio data control section m' 3, for audio reproduction. The unit 4 converts the edited audio data from the audio data control unit 3 into an analog signal, amplifies it, outputs it to the output terminal 44, and reproduces the audio.

The audio data control unit 3 extracts a plurality of audio data of arbitrary syllables from arbitrary addresses in the audio memory 1 and the audio memory 2 under the control of the audio editing processing unit 6, and transfers them to the audio playback unit 4 after editing. Conversely, control is performed to write the audio data to be recorded from the audio input section 5 into the audio memory 1 or 2.

The audio editing processing unit 6 has various control data for editing audio data, and includes an audio data control unit? to control audio playback and audio data recording.

As shown in FIG. 2 (A), the audio memories 1 and 2 contain the data number of the audio data stored in the audio memory, the starting address in the memory of the data, and the data length. As one set, a directory section 21 that records a plurality of sets and a plurality of audio data are stored. Therefore, the memory map in each voice memory is shown in Figure 2 (B).
As shown as 22 in FIG.
A plurality of pieces of audio data are stored sequentially.

The numbers on the left side of the memory map 22 shown in FIG. 2(B) are:
This is the absolute address within the system of the audio data in the audio memory 1 or 2, and this absolute address is the first absolute address given to each IC memory card that makes up the audio memory, and is stored in the directory section 21 mentioned above. It is obtained by adding the starting address of the indicated audio data, and as a result, even if the removably configured audio memory 1 or 2 is replaced with another IC memory card,
This allows the correct audio data to be read within the system.

Next, the operation of recording and reproducing audio data will be explained. Third
The figure is a flowchart illustrating the operation during recording, and the following explanation will be given assuming that audio data is recorded in a free space in the audio memory 2.

(1) At the start of recording, the audio editing processing unit 6 obtains the start address of the free area and the length of the total free area in the audio memory 2 from the directory unit 21 in the audio memory 2 via the audio data system m3. (Flow 31).

(2) Convert the audio signal input from the input terminal 51 into digital data via the amplifier 52, low-pass filter 53, and A/D converter 54, and divide this digitized audio data into syllables. After conducting an analysis such as
Record data sequentially from the beginning of the empty area in audio memory 2.
(Flow 32°33).

(3) After recording the audio data, the start address and length of the audio data just recorded are recorded in the directory section z1 of the audio memory 2, and the operation ends (flow 34).

FIG. 4 is a flowchart illustrating the operation during audio reproduction, which will be explained below.

(1) At the time of audio reproduction, the audio editing processing section 6 gives the audio data control section 3 the data number of the audio data to be reproduced (Flow 35).

(2) Based on this data number, the audio data control section 3 obtains the starting address and length of the audio data corresponding to this data number in the audio memory 1 or 2 from the directory section z1, and performs audio editing on this. Pass to processing unit 6 (
Flow 36).

(3) The audio data control section 3 receives the start address and data length of the audio data obtained above from the audio editing processing section 6, reads out the audio data in the audio memory, and provides it to the audio reproduction section 4. The audio playback section 4 converts the given audio data into a D/A
It is converted into an analog audio signal via the converter 41, low-pass filter 42, and amplifier 43, and outputted to the output terminal 44 (Flows 37 and 38).

(4) The audio editing processing unit 6 determines the timing to give the data number of the audio data to be played next to the audio data control unit based on the data length received in flow 36″r-ζ, and performs the above-mentioned operation. By repeating, a series of desired audio signals are output.

Now, if it is desired to obtain a reproduced sound as shown in FIG. 6, the audio editing processing section 6 reads out the pre-fixed sound that is played more frequently from the audio memory 1, and reads the non-fixed sound that is played less frequently from the audio memory 2. It is sufficient to perform control for sequential reproduction. In this case, it is important to smoothly play back non-fixed sounds that are played less frequently, but in the embodiment described above, by using the recording function, it is possible to easily play back sounds that do not exist in the audio memory. In addition, non-fixed sounds can be easily reproduced by replacing the audio memory using a replaceable IC memory card.

〔Effect of the invention〕

As explained above, according to the present invention, the following effects can be achieved.

(1) Loading audio data into the audio memory from a separately provided audio file can be omitted.

(2) The calculation of the starting address of the audio data associated with the above-mentioned loading operation is performed using a simple method of adding the starting addresses of each audio memory, which is determined by the system.

(3) The audio reproduction content can be easily changed by replacing the IC memory card, which is equivalent to virtually increasing the storage capacity to infinity.

(4) By providing a directory section in the IC memory card, it becomes unnecessary to calculate the address and data length of audio data.

(5) Since the audio data is stored continuously in the IC memory card, the address of the audio data and the movement of the audio data length to be played back can be controlled by a counter, and the value of the counter is used as an offset for the end of the address operation. , and does not require complicated control circuits.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a speech synthesis and playback device to which the present invention is applied, and FIGS. 3 and 4 are diagrams for explaining recording and reproduction operations, FIG. 5 is a block diagram showing an example of a conventional audio reproduction device, and FIG. 6 is a diagram showing an example of audio output. 1.2...Audio memory, 3...Audio data control unit, 4...Audio playback unit, 5...
・Audio input section, 6...Audio editing processing section, 7...
...Audio file, 8...Control data bus, 10...Audio data bus, 21...
Directory section, 22...Memory map 41.
...D/A converter, 42.53...
Pass filter, 43.52...Amplifier, 44 output terminal, 51...Input terminal, 54...
A/Mbaata.

Claims (1)

[Claims] 1. An audio input unit that converts input audio into digital data, an audio playback unit that converts digital data into an analog signal, a memory that stores audio data, and a control unit that controls these. In the audio data recording system, the memory is constituted by two audio memories, at least one of these audio memories is a removable IC memory card whose address can be directly designated by the control means, and the control means Audio data characterized in that by directly accessing the IC memory card, the audio data in the IC memory card is read out and given to the audio playback section, and the audio data from the audio input section is written into the IC memory card. Recording method. 2. The audio data recording system according to claim 1, wherein the IC memory card includes a directory section indicating a storage address in the IC card of each stored audio data.