JPH0923267A - Voice recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the recorder to cope with a message for a long time caused rarely so as to record a message with high sound quality in the usual use. SOLUTION: The recorder is provided with an A/D converter 1 converting a voice signal of a message into a digital signal based on a high sampling frequency and a low sampling frequency set by a compression rate control means 6, a storage means 2 storing digitally converted voice signal data to a storage area allocated in advance, a D/A converter 3 converting the voice signal data read from the storage means 2 into the analog voice signal, and a recording time discrimination means 5 discriminating the recording time of the voice signal based on the measured time of a count means 4, deleting either of the voice signal data recorded respectively in each storage area of the storage means 2 and setting the storage area side free and allocating again the storage area so as to be recorded respectively be two kinds of sampling frequencies.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an answering machine, for example, and more particularly, to a voice recording device for recording a message of a caller received during an absence.

[0002]

2. Description of the Related Art Conventionally, a magnetic tape has been generally used as a means for recording a voice signal of a telephone which is received while absent, but with the advance of technology, the storage capacity of an IC memory is increased. Since the recording of voice signals has become possible, IC memory has come to be used as a storage means of an answering machine. An answering machine having this IC memory built therein is disclosed in, for example, Japanese Patent Application Laid-Open Nos. 2-78058 and 5-236087.
The former usually digitally converts an audio signal at a high sampling frequency and records it in an IC memory. When the recording time exceeds the preset boundary time, the setting value of the sampling frequency is switched to a low value to extend the recording time. Further, as another embodiment, when the recording time exceeds the boundary time, the data of the audio signal recorded before the boundary time is erased intermittently to increase the compression rate, and the input audio signal is compressed at the compression rate. The recording time is extended by compressing with. The latter has a plurality of recording bit rates of encoding for recording an audio signal, allocates storage capacities to each, and initially records in an IC memory at a high bit rate, and when the recording time exceeds a certain time, it is low. The bit rate is switched to record in the IC memory.

[0003]

When recording in the above-mentioned IC memory, the sampling frequency for A / D conversion is set in advance and recording is started. Therefore, if the audio signal is longer than expected, it is recorded in the memory. However, if the sampling frequency is set to a low value, there is no worry about that, but if the audio signal is shorter than expected, there will be many recordable portions and it will be wasteful. That is, the higher the sampling frequency, the wider the band of the signal that can be recorded and the recording capacity is required. However, when the audio signal is short, it is desirable that the sampling frequency be as high as possible.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an audio recording apparatus for simultaneously recording an audio signal at a plurality of sampling frequencies and reproducing the sound with the best sound quality. .

[0005]

A voice recording apparatus according to the present invention includes an A / D converter for digitally converting a voice signal of a message at a high sampling frequency and a low sampling frequency, and a digitally converted signal. Storage means for respectively recording the audio signal data in a previously allocated storage area, and D / for converting the audio signal data read from the storage means into an analog signal and outputting the audio signal.
The A converter, the time measuring means for measuring time, and the recording time of the audio signal are discriminated based on the measuring time of the time measuring means, and based on the discrimination, the audio signal data respectively recorded in the respective storage areas of the storage means. A recording time discriminating means for erasing one of the recording areas, opening the storage area side, and allocating the storage area again so that recording can be performed at each of the two types of sampling frequencies is provided. Further, the recording time discriminating means discriminates the recording capacity of the audio signal based on the measurement time of the time measuring means, and based on the discrimination, erases one of the audio signal data recorded in each storage area of the storage means. At the same time, the storage area side is opened, and the storage capacity determination means allocates the storage area again so that recording can be performed at each of the two types of sampling frequencies.

The recording time discriminating means sets a recordable time of a storage area in which audio signal data is recorded at a high sampling frequency, and when the recording time reaches the recordable time, records at a high sampling frequency. The stored audio signal data is erased, the storage area side is opened, and the storage area is re-allocated so that the two kinds of sampling frequencies can be recorded respectively. Further, the recording time discriminating means sets the recordable capacity of the storage area in which the audio signal data is recorded at a high sampling frequency, discriminates the recording capacity of the audio signal based on the measurement time of the time measuring means, and the recording capacity is When the recordable capacity is reached, the audio signal data recorded at a high sampling frequency is erased, the storage area side is opened, and a storage area is again allocated so that the recording can be performed at each of the two types of sampling frequencies. It is composed of a capacity discriminating means.

The recording time discriminating means has a plurality of recordable times of a storage area in which audio signal data is recorded at a high sampling frequency, and is recorded at a high sampling frequency every time the recording time reaches the recordable time. Delete the voice signal data that was saved and open the storage area side,
A storage area is allocated so that recording can be performed at each of the two types of sampling frequencies, and this is repeated until the storage means is filled with audio signal data of a low sampling frequency. Further, the recording time discriminating means has a plurality of recordable capacities of the storage area in which the audio signal data is recorded at a high sampling frequency, discriminates the recording capacity of the audio signal based on the measuring time of the clocking means, and the recording capacity is Each time the recordable capacity is reached, the audio signal data recorded at a high sampling frequency is erased, the storage area side is opened, and a storage area is allocated so that each of the two kinds of sampling frequencies can be recorded. It is composed of a recording capacity discriminating means which is repeatedly executed until the storage means is filled with audio signal data of a low sampling frequency.

Further, an A / D for digitally converting the voice signal of the message at each of n kinds of sampling frequencies
A converter, a storage unit that records each digitally converted audio signal data in a pre-allocated storage area, and an analog conversion of the audio signal data read from the storage unit to output an audio signal D An A / A converter, a time measuring means for measuring time, and a recordable time of a storage area in which audio signal data is recorded at the highest sampling frequency of n kinds of sampling frequencies,
The recording time of the audio signal is determined based on the time measured by the time measuring means, and when the recording time reaches the recordable time, the audio signal data recorded at the highest sampling frequency is erased and the storage area side is opened. Then, a recording time discriminating means for allocating a storage area again so that recording can be performed at each of the n kinds of sampling frequencies is provided. Further, the recording time discriminating means sets the recordable capacity of the storage area in which the audio signal data is recorded at a high sampling frequency, discriminates the recording capacity of the audio signal based on the measurement time of the time measuring means, and the recording capacity is When the recordable capacity is reached, the audio signal data recorded at the high sampling frequency is erased, the storage area side thereof is opened, and the storage area is again allocated so that the recording can be performed at each of the n kinds of sampling frequencies. It is composed of a capacity discriminating means.

Further, the voice recording apparatus of the present invention comprises an A / D converter for digitally converting a voice signal of a message into a high compression rate and a low compression rate, and digitally converted respective voice signal data. Storage means for respectively recording in a storage area allocated in advance, a D / A converter for converting the audio signal data read from the storage means into an analog signal and outputting the audio signal, and a time measuring means for measuring time.
The recording time of the audio signal is discriminated based on the measurement time of the time measuring means, and based on the discrimination, one of the audio signal data recorded in each storage area of the storage means is erased and the storage area side is opened. Then, a recording time discriminating means for allocating a storage area again so that recording can be performed at each of the two types of compression rates is provided. Further, the recording time discriminating means discriminates the recording capacity of the audio signal based on the measurement time of the time measuring means, and based on the discrimination, erases one of the audio signal data recorded in each storage area of the storage means. At the same time, the storage area side is opened, and the storage capacity determination means allocates the storage area again so that the data can be recorded at the two compression rates.

The recording time discriminating means sets a recordable time of a storage area in which audio signal data is recorded at a low compression rate, and when the recording time reaches the recordable time, records at a low compression rate. The recorded audio signal data is erased, the storage area side is opened, and the storage area is re-allocated so that recording can be performed at each of the two compression rates.
The recording time discriminating means sets the recordable capacity of the storage area in which the audio signal data is recorded at a low compression rate, discriminates the recording capacity of the audio signal based on the measurement time of the time measuring means, and the recording capacity When it reaches the recordable capacity,
The audio signal data recorded at a low compression rate is erased, the storage area side is opened, and a storage area is allocated again so that the two types of compression rates can be recorded.

The recording time discriminating means has a plurality of recordable times in the storage area in which the audio signal data is recorded at a low compression rate, and records at a low compression rate each time the recording time reaches the recordable time. The stored audio signal data is erased, the storage area side is opened, and a storage area is allocated so that each of the two types of compression rates can be recorded, and the storage means is filled with the audio signal data having a high compression rate. Repeat until. Further, the recording time discriminating means has a plurality of recordable capacities of the storage area in which the audio signal data is recorded at a low compression rate, discriminates the recording capacity of the audio signal based on the measurement time of the time measuring means, and the recording capacity Each time the recording capacity reaches, the audio signal data recorded at a low compression rate is erased, the storage area side is opened, and a storage area is allocated so that each of the two types of compression rates can be recorded. It is composed of a recording capacity discriminating means which is repeatedly executed until the storage means is filled with audio signal data having a high compression rate.

Further, an A / D converter for digitally converting the voice signal of the message at n kinds of compression ratios, and a storage means for recording the respective digitally converted voice signal data in a pre-allocated storage area, respectively. When,
A D / A converter that converts the voice signal data read from the storage unit into an analog signal and outputs the voice signal, a time measuring unit that measures time, and a voice signal data at the lowest compression rate of n types of compression rates. Is set, the recordable time of the recording area is set, the recording time of the audio signal is determined based on the measurement time of the time measuring means, and when the recordable time reaches the recordable time, the recording is performed at the lowest compression rate. A recording time discriminating unit is provided for erasing the recorded audio signal data, opening the storage area side, and reallocating the storage area so that the data can be recorded at each of the n types of compression rates. Further, the recording time discriminating means sets the recordable capacity of the storage area in which the audio signal data is recorded at a low compression rate, discriminates the recording capacity of the audio signal based on the measurement time of the time measuring means, and the recording capacity is When the recordable capacity is reached, the audio signal data recorded at a low compression rate is erased, the storage area side is opened, and a storage area is again allocated so that the recording can be performed at each of the n types of compression rates. It is composed of a capacity discriminating means.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a block diagram for explaining an embodiment of the present invention. In the figure, reference numeral 1 is a sampling frequency of 5 KHz and 8 KHz set by a compression rate control means 6, for example. The A / D converters 2 and 2 are storage means for respectively recording the digitally converted audio signal data of the same content in the pre-allocated 5 KHz storage area and 8 KHz storage area. Reference numeral 3 denotes a D / A converter for analog-converting the voice signal data read from the storage means 2 at a sampling frequency set by the compression ratio control means 6 to output a voice signal, and 4 a voice signal of a message received. It is a time measuring means for measuring the time when it is given.

Numeral 5 is a recording time discriminating means, for example, the recordable time of the 8 KHz storage area of the storage means 2 is set, the recording time is discriminated based on the measurement time of the time measuring means 4, and the recording time is determined based on the recordable time. If you determine that the recording time is short,
The audio signal data recorded in the 8 KHz storage area of the storage means 2 is held, the audio signal data recorded in the 5 KHz storage area is erased, and the 5 KHz storage area side is opened to perform the two types of sampling. Reallocating so that each frequency can be recorded, and when it is determined that the recording time is long, conversely to the above, 5 KHz of the storage means 2
The audio signal data recorded in the storage area for recording is retained, and the storage area for 8 KHz is opened and reallocated so that the recording can be performed at each of the two sampling frequencies.

FIG. 2 is a block diagram showing an example of the configuration of a telephone having the function of the voice recording apparatus of the present invention. In the figure, 11 is a telephone line connected to a public line, and 12 is a telephone line 11 and a telephone. A line interface for exchanging audio signals with the main body, 13 is a path for audio signals (tracks, etc.)
A voice path control circuit for controlling the telephone, 14 is a handset connected to the voice path control circuit 13, 15 is a microcomputer for performing various controls of the telephone body, 16 is a key switch for inputting functions such as dialing, and 17 is A / D converter 1 described above
And a codec having the functions of the D / A converter 3.

Reference numeral 18 denotes a digital signal processor (hereinafter referred to as "DSP"), which is a high-speed arithmetic processing unit 18
a, a microcomputer interface section 18b, a memory interface section 18c, etc., and a high-speed arithmetic processing section 18a.
Has the functions of the time counting means 4, the recording time discriminating means 5 and the compression ratio controlling means 6 described above, the microcomputer interface section 18b is for exchanging signals with the microcomputer 15, and the memory interface section 18c is a memory. The RAM 19 and the ROM 20 are accessed. The RAM 19 corresponds to the storage unit 2 described above, and is previously allocated with a storage area for 5 KHz and a storage area for 8 KHz. The ROM 20 stores time stamps, holding sounds, and the like.

In the telephone configured as described above,
The operation of recording the voice signal of the message and the operation of the reproduction will be described. When the voice signal of the message is received by the line interface 12, the microcomputer 15 notifies the voice path control circuit 13 and the DSP 18,
The audio path control circuit 13 outputs the audio signal to the codec 17
To the codec 17, and the DSP 18 outputs 5 KHz and 8
Set the KHz sampling frequency. At this time, the codec 17 digitally converts the audio signal into sampling frequencies of 5 KHz and 8 KHz, respectively.
8 is output. The DSP 18 stores the digitally converted audio signal data of the same content in the 5 KHz storage area of the RAM 19 through the memory interface section 18c.
Each recording time is recorded in the KHz storage area, and the recording time is determined based on the preset recordable time. When the recording of the audio signal ends within the recordable time, the audio signal data recorded in the 8 KHz storage area of the RAM 19 is held, the audio signal data recorded in the 5 KHz storage area is erased, and the 5 kHz The storage area side is opened and the storage area is reassigned so that recording can be performed at each of the two sampling frequencies. Also,
When the recording of the audio signal reaches the recordable time, conversely to the above, the audio signal data recorded in the 5 KHz storage area of the RAM 19 is held, the audio signal data recorded in the 8 KHz storage area is erased, and The 8 KHz storage area side is opened and the storage area is reassigned so that recording can be performed at each of the two types of sampling frequencies, and continuously recorded audio signals are continuously recorded.

When there is an access to reproduce a message from the key switch 16 or an outside line, the microcomputer 15 notifies the DSP 18 of the fact, and the DSP 18 uses this command to store the voice stored in one of the storage areas of the RAM 19. The signal data is sequentially read out and output to the codec 17 via the memory interface section 18c, and at the same sampling frequency (5 KHz or 8 KH) as the frequency at which the audio signal data is sampled.
z) is set to the codec 17. At this time, the codec 17 analog-converts the input audio signal data at the set sampling frequency and outputs it to the audio path control circuit 13, and the audio path control circuit 13 outputs the analog-converted audio signal to the line interface. It is output to the telephone line 11 via 12. When the reproduction of the message is completed, the DSP 18 erases the audio signal data held in the RAM 19, and returns to the initial state when the storage area of the RAM 19 is allocated for the second time.

In this embodiment, the voice signal of the message is 5
The data is recorded in the RAM 19 at the sampling frequencies of KHz and 8 KHz, and when the recording time is long, the storage area for 8 KHz is allocated to 5 KHz and 8 KHz, and 5 KHz is allocated.
Since the voice signal data on the other side can be continuously recorded, it is possible to reproduce a message with high sound quality in normal use, and it is possible to cope with a message that occasionally lasts for a long time.

Example 2. FIG. 3 is a block diagram of an audio recording device for explaining the second embodiment. In this embodiment, a recording capacity discriminating means 5a is used instead of the recording time discriminating means 5 shown in FIG.
When the recordable capacity of the KHz storage area is set, the recording capacity is determined based on the measurement time of the timekeeping means 4, and when it is determined that the recording capacity is short based on the recordable capacity, for the 8 kHz of the storage means 2. The audio signal data recorded in the storage area is held, the audio signal data recorded in the storage area for 5 KHz is erased, and the storage area side for 5 KHz is opened so that each of the two sampling frequencies can be recorded. When the storage area is again allocated to the storage area and it is determined that the storage capacity is long, the storage area of the storage means 2 is reversed.
The audio signal data recorded in the KHz storage area is held, the audio signal data recorded in the 8 KHz storage area is erased, and the 8 KHz storage area is opened to record at each of the two sampling frequencies. Allocate storage again so that you can. When the function of the recording capacity determining means 5a is applied to the telephone shown in FIG.
SP18 will have that function.

In this case, the digitally converted audio signal data having a sampling frequency of 5 KHz and audio signal data having a sampling frequency of 8 KHz are recorded by the DSP 18 in the storage area for 5 KHz and the storage area for 8 KHz of the RAM 19, respectively. At this time, the DSP 18 discriminates the recording capacity from the measurement time, and when the recording capacity is less than the recordable capacity, the RAM 1 is the same as in the first embodiment.
9 holds the audio signal data recorded in the 8 KHz storage area, erases the audio signal data recorded in the 5 KHz storage area, and opens the 5 KHz storage area side to use the above two sampling frequencies. Allocate storage areas again so that they can be recorded. When the recording capacity reaches the recordable capacity, the RAM is reversed,
The audio signal data recorded in the storage area for 5 KHz of 19 is held, the audio signal data recorded in the storage area for 8 KHz is erased, and the storage area side for 8 KHz is opened to use the two sampling frequencies. A storage area is allocated again so that each can be recorded, and the audio signal that is continuously received is continuously recorded. The message reproduction is the same as in the first embodiment. Also in this embodiment, the same effect as that of the first embodiment can be obtained.

Embodiment 3 FIG. FIG. 4 is a block diagram of a voice recording device for explaining the third embodiment. In this embodiment, when the capacity of the 8 KHz storage area of the storage means 2 becomes full, the storage area side is opened. Then, the storage area is reallocated. The function is included in the recording time discriminating means 5b, for example, 8KH of the storage means 2.
The recordable time of the z storage area is set, the recording time is discriminated based on the measurement time of the clocking means 4, and when the recording time reaches the recordable time, the recording time is recorded in the 5 kHz storage area of the storage means 2. The stored audio signal data is held, the audio signal data in the 8 KHz storage area is erased to open the storage area, and the storage area is opened again so that the two sampling frequencies can be recorded. assign. This recording time discrimination means 5b
2 is applied to the telephone shown in FIG.
Will have that function.

When the voice signal of the message is received by the line interface 12, the DSP 18 sets the sampling frequencies of 5 KHz and 8 KHz in the codec 17, as described above. At this time, the codec 17 digitally converts the audio signal into sampling frequencies of 5 KHz and 8 KHz, and outputs the digital signal to the DSP 18. DSP1
Reference numeral 8 designates the digitally converted audio signal data of the same content in the RAM via the memory interface section 18c.
Recording is performed in each of the 5 KHz storage area and the 8 KHz storage area of 19 and the recording time is preset to 8
It is determined whether the recordable time of the KHz storage area has been reached. When the recording of the audio signal is completed within the recordable time, the audio signal data recorded in each storage area is held, and when the reproduction access is made in this state, the audio signal data is recorded in the storage area for 8 KHz. Read and output audio signal data. Then, when the reproduction is completed, the audio signal data recorded in both storage areas are erased. On the other hand, when the recording time reaches the recordable time, the audio signal data in the 8 KHz storage area of the RAM 19 is erased, the storage area is opened, and recording is performed in the storage area at the two types of sampling frequencies. Reassign as much as possible, and continue to record continuously received audio signals at the two sampling frequencies.

In this embodiment, a message with high sound quality can be reproduced in normal use, and when the voice signal of the message is long, the voice signal data in the storage area for 8 KHz is erased and the storage area is opened, Since the recording can be performed at each of the two types of sampling frequencies in the storage area, it is possible to deal with occasional long messages.

Embodiment 4 FIG. In the third embodiment, DS
Although it has been illustrated that P18 has the function of the recording time determination means 5b, it may have the function of the recording capacity determination means instead of the recording time determination means 5b. In that case, D
The SP 18 is set with a recordable capacity in the 8 KHz storage area, determines the recording capacity based on the measurement of the time of the audio signal, and when the recording capacity reaches the recordable capacity, RA
The audio signal data recorded in the storage area for 5 KHz of M19 is held, the audio signal data in the storage area for 8 KHz is erased to open the storage area, and the two types of sampling frequencies are set in the opened storage area. Reassign to record each.

Also in this embodiment, similar to the third embodiment, it is possible to reproduce a message with high sound quality in normal use and to cope with a message for a long time occasionally.

Embodiment 5 FIG. FIG. 5 is a block diagram of an audio recording device for explaining the fifth embodiment, and FIG. 6 is an explanatory diagram for explaining allocation of storage areas of storage means in the present embodiment. In this embodiment, the storage means 2 is 5 KH.
The 8 KHz storage area side is repeatedly allocated until the audio signal data of the z sampling frequency is full. The function is the recording time discrimination means 5c.
Has, for example, the recordable time of the 8 KHz storage area of the storage means 2 is set, the recording time is determined based on the measurement time of the clock means 4, and the recording time reaches the recordable time of the 8 KHz storage area. When done (see a in FIG. 6), 5K
The audio signal data recorded in the Hz storage area is retained, the audio signal data in the 8 KHz storage area is erased to open the storage area (see b in FIG. 6), and the above-mentioned data is stored in the opened storage area. Allocate so that each of the two sampling frequencies can be recorded (see c in FIG. 6). When the 8 KHz storage area is filled with audio signal data, the 8 KHz sampling frequency audio signal data is erased again to free the storage area (see d in FIG. 6), and the opened storage area 5KHz storage area and 8KHz storage area, and this is repeated until the storage means 2 is filled with 5KHz sampling frequency audio signal data (FIG. 6).
E)). When the function of the recording time discriminating means 5c is applied to the telephone shown in FIG. 2, as described above, the DSP 18
Will have that function.

When the voice signal of the message is received by the line interface 12 in the telephone of FIG.
18 sets the sampling frequencies of 5 KHz and 8 KHz in the codec 17. At this time, the codec 17
The audio signal is converted into digital signals at sampling frequencies of 5 KHz and 8 KHz, and output to the DSP 18. D
The SP 18 records the digitally converted audio signal data of the same content in the storage area for 5 KHz and the storage area for 8 KHz of the RAM 19 via the memory interface unit 18c, and the recording time for 8 KHz is preset. It is determined whether or not the recordable time on the storage area side has been reached. When the recording of the audio signal is completed within the recordable time, the audio signal data recorded in each storage area is held, and when the reproduction access is made in this state, the audio signal data is recorded in the storage area for 8 KHz. Read and output audio signal data. Then, when the reproduction is completed, the audio signal data recorded in both storage areas are erased.

On the other hand, when the recording time reaches the recordable time, the audio signal data in the 8 KHz storage area of the RAM 19 is erased and the storage area is opened, and the two sampling frequencies are stored in the storage area. , And the audio signals continuously received are continuously recorded at the two kinds of sampling frequencies. When the 8 KHz storage area is filled with audio signal data, the audio signal data of the 8 KHz sampling frequency is erased again to open the storage area, and the 5 KHz storage area is set in the opened storage area. It is allocated to the storage area for 8 KHz. Further, when the storage area for 8 KHz is filled with the audio signal data, the audio signal data of the 8 KHz sampling frequency is erased and the storage area is opened as described above.
5KHz storage area and 8K in the open storage area
Allocated to the memory area for Hz, and RAM 19 allocates this to 5K
Repeat until audio signal data of Hz sampling frequency is full.

In the present embodiment, a message of high sound quality can be reproduced in normal use, and when the voice signal of the message is long, the RAM 19 is stored in the 8 KHz storage area until the RAM 19 is full of voice signal data of 5 KHz sampling frequency. Is repeatedly allocated to 5 KHz and 8 KHz, so that there is an effect that even a message for a long time can be dealt with.

Embodiment 6 FIG. In the fifth embodiment, 8K
It has been illustrated that the storage areas for Hz are allocated to 5 kHz and 8 kHz, and this is repeated until the RAM 19 is filled with the audio signal data of the 5 kHz sampling frequency. However, recording of the 8 kHz storage areas is performed based on the measurement time. A recording capacity determining means for determining the capacity may be used. Also in this embodiment, it is possible to reproduce a message with high sound quality in normal use and to cope with a message for a long time.

Embodiment 7 FIG. FIG. 7 is a block diagram of a voice recording device for explaining the seventh embodiment. In this embodiment, the audio signal is recorded in the storage means 2 at n kinds of sampling frequencies, and the function is included in the recording time discrimination means 5d, and is recorded at the highest sampling frequency among the n kinds of sampling frequencies. The recordable time of the storage area is set, the recording time is discriminated based on the measurement time of the clocking means 4, and when the recording time reaches the recordable time, the storage for the highest sampling frequency of the storage means 2 is performed. The audio signal data recorded in the area is erased to open the storage area, and the allocated storage area is reallocated so that it can be recorded at each of the n kinds of sampling frequencies. When the function of the recording capacity determining means 5d is applied to the telephone shown in FIG. 2, the DSP 18 has the function. Further, the codec 17 converts the audio signal into digital signals at n kinds of sampling frequencies, and the RAM 19 is allocated with n storage areas.

When the voice signal of the message is received by the line interface 12 in the telephone of FIG.
18 sets n kinds of sampling frequencies in the codec 17. At this time, the codec 17 outputs the audio signal n
Each of the sampling frequencies is digitally converted and output to the DSP 18. The DSP 18 records n kinds of digitally converted audio signal data of the same content in n storage areas of the RAM 19 via the memory interface section 18c, respectively, and at the same time, the recording time is set to a preset recordable time. Determine if it has been reached. When the recording of the audio signal is completed within the recordable time, the audio signal data recorded in each storage area is retained, and when the reproduction access is made in this state, it is recorded at the highest sampling frequency. The audio signal data in the storage area is read and output. Then, when the reproduction is completed, the audio signal data recorded in the n storage areas is erased. On the other hand, when the recording time reaches the recordable time, the audio signal data in the storage area recorded at the highest sampling frequency is erased, the storage area side is opened, and the n types of It is re-allocated so that it can be recorded at each sampling frequency, and continuously received audio signals are continuously recorded at the n kinds of sampling frequencies.

In this embodiment, since messages of the same content can be simultaneously recorded at n kinds of sampling frequencies, various kinds of messages ranging from high sound quality to low sound quality can be recorded in normal use. The effect is that it can handle messages that last for a long time.

Embodiment 8 FIG. In the seventh embodiment, when the recording time determined based on the measured time reaches the recordable time of the storage area having the highest sampling frequency, the recording time determining means 5d for allocating the storage area to n pieces is provided. Although the DSP 18 included therein has been illustrated, the recording capacity is discriminated based on the measurement time, and when the capacity reaches the recordable capacity of the storage area having the highest sampling frequency, the recording capacity determining means for allocating the storage area to n storage areas. It may be a DSP 18 having. In the present embodiment as well, as in the seventh embodiment, various kinds of messages ranging from high-quality sound to low-quality sound can be recorded in normal use, and it is possible to cope with occasional long-time messages.

Embodiment 9 FIG. FIG. 8 is a block diagram for explaining the ninth embodiment of the present invention. The same or corresponding parts as those of the first embodiment described with reference to FIG.

In the figure, an A / D converter 1 digitally converts a voice signal of a message into a high compression rate (for example, PCM system) and a low compression rate (for example, CELP system) set by a compression rate control means 6, respectively. . Storage means 2
Respectively records the digitally converted audio signal data of the same content in a high compression rate storage area and a low compression rate storage area, which are assigned in advance. D / A converter 3
Converts the audio signal data read from the storage means 2 into an analog signal at a compression rate set by the compression rate control means 6 and outputs an audio signal.

Reference numeral 7 is a recording time discriminating means, for example, the recordable time of the low compression ratio storage area of the storage means 2 is set,
When the recording time is determined based on the measurement time of the time measuring means 4 and the recording time is determined to be short based on the recordable time, the audio signal data recorded in the low compression ratio storage area of the storage means 2 is held. At the same time, the audio signal data recorded in the high compression rate storage area is erased, and the high compression rate storage area side is opened and reallocated so that the two compression rates can be recorded respectively. When it is determined that the recording time is long, contrary to the above, the audio signal data recorded in the high compression ratio storage area of the storage unit 2 is held, and
The storage area for the low compression rate is opened and reallocated so that the two compression rates can be recorded respectively. The function of this recording time discrimination means 7 is the DSP 18 of the telephone shown in FIG.
The RAM 19 is allocated with a high compression rate storage area and a low compression rate storage area.

In the telephone configured as described above,
The operation of recording the voice signal of the message and the operation of the reproduction will be described. When the voice signal of the message is received by the line interface 12, the microcomputer 15 notifies the voice path control circuit 13 and the DSP 18,
The audio path control circuit 13 outputs the audio signal to the codec 17
The DSP 18 sets the codec 17 to a high compression rate and a low compression rate. At this time, the codec 17
The audio signal is digitally converted at each compression rate and output to the DSP 18. The DSP 18 records the digitally converted audio signal data of the same content in the high compression rate storage area and the low compression rate storage area of the RAM 19 via the memory interface section 18c, and sets the recording time in advance. The determination is made based on the available recording time. When the recording of the audio signal ends in less than the recordable time, the audio signal data recorded in the low compression rate storage area is held, and the audio signal data recorded in the high compression rate storage area is erased, and The storage area for the high compression rate is released, and the storage area is re-allocated so that recording can be performed at the two types of compression rates. When the recording of the audio signal reaches the recordable time, on the contrary to the above, the audio signal data recorded in the high compression rate storage area of the RAM 19 is held and the audio signal recorded in the low compression rate storage area is held. The data is erased, the storage area for the low compression rate is opened, and the storage area is reassigned so that the two compression rates can be recorded respectively, and the audio signal continuously received is continuously recorded. .

When there is an access to reproduce a message from the key switch 16 or an outside line, the microcomputer 15 notifies the DSP 18 to that effect, and the DSP 18 uses this command to output the voice stored in one of the storage areas of the RAM 19. The signal data is sequentially read and output to the codec 17 via the memory interface section 18c, and the same compression rate as the compression rate of the audio signal data is set in the codec 17. At this time, the codec 17 analog-converts the input audio signal data at the set compression rate and outputs the analog-converted audio signal to the audio path control circuit 13. The audio path control circuit 13 outputs the analog-converted audio signal to the line interface. Telephone line 1 through 12
Output to 1. When the message has finished playing, press D
The SP 18 erases the audio signal data held in the RAM 19, and returns to the initial state when the storage area of the RAM 19 is allocated for the second time.

In this embodiment, the voice signal of the message is recorded in the RAM 19 with a high compression rate and a low compression rate,
When the recording time is long, the low compression rate storage area side is assigned to two types of compression rates so that the audio signal data of the higher compression rate can be continuously recorded, so that the sound quality is high in normal use. There is an effect that a message can be played and a message for a long time can be dealt with occasionally.

Embodiment 10 FIG. FIG. 9 is a block diagram of a voice recording device for explaining the tenth embodiment. In this embodiment, a recording capacity discriminating means 7a is used in place of the recording time discriminating means 7 shown in FIG.
When the recordable capacity of the low compression ratio storage area is set, the recordable capacity is determined based on the measurement time of the time measuring means 4, and the recordable capacity is determined to be short based on the recordable capacity,
The audio signal data recorded in the low compression rate storage area of the storage means 2 is held, the audio signal data recorded in the high compression rate storage area is erased, and the high compression rate storage area side is opened. Storage areas are again allocated so that they can be recorded at the two compression rates respectively, and when it is determined that the recording capacity is long, the audio signal data recorded in the high compression rate storage areas of the storage means 2 is reverse to the above. Is held, the audio signal data recorded in the low compression rate storage area is erased, and the low compression rate storage area side is opened so that the two compression rates can be recorded respectively. Assign This recording capacity discrimination means 7
When the function of a is applied to the telephone shown in FIG. 2, DSP1
8 will have that function.

In this case, each audio signal data digitally converted at each compression rate is recorded by the DSP 18 in each storage area of the RAM 19. At this time, the DSP 18 determines the recording capacity from the measured time, and when the capacity is less than the recordable capacity, R
The audio signal data recorded in the low compression rate storage area of the AM 19 is held, the audio signal data recorded in the high compression rate storage area is erased, and the high compression rate storage area side is opened to store the audio signal data. A storage area is allocated again so that the data can be recorded at two compression rates. When the recording capacity reaches the recordable capacity, conversely to the above, the audio signal data recorded in the high compression rate storage area is held and the audio signal data recorded in the low compression rate storage area is erased. Then, the storage area for the low compression rate is opened and the storage area is reassigned so that the two compression rates can be respectively recorded, and the audio signal continuously received is continuously recorded. The message reproduction is the same as in the ninth embodiment. Also in this embodiment, the same effect as that of the ninth embodiment can be obtained.

Embodiment 11 FIG. FIG. 10 is a block diagram of an audio recording device for explaining the eleventh embodiment. In this embodiment, when the capacity of the low compression rate storage area of the storage means 2 becomes full, the storage area side Is released and the storage area is reallocated. The function is included in the recording time discriminating means 7b. For example, the recordable time of the low compression rate memory area of the memory means 2 is set, the recording time is discriminated based on the measurement time of the time measuring means 4, and the recording time is determined. Has reached the recordable time, the audio signal data recorded in the high compression rate storage area of the storage means 2 is held, and the audio signal data in the low compression rate storage area is erased to save the storage area. It is released and reallocated so that it can be recorded at each of the two compression rates in the opened storage area. This recording capacity discrimination means 7b
2 is applied to the telephone shown in FIG.
Will have that function.

When the voice signal of the message is received by the line interface 12, the DSP 18 sets the high compression rate and the low compression rate in the codec 17, as described above.
At this time, the codec 17 digitally converts the audio signal at each compression rate and outputs it to the DSP 18. The DSP 18 records the digitally converted audio signal data of the same content in the high compression rate storage area and the low compression rate storage area of the RAM 19 via the memory interface section 18c, and sets the recording time in advance. It is determined whether or not the recordable time on the storage area for the low compression ratio that has been reached has been reached. When the recording of the audio signal is completed within the recordable time, the audio signal data recorded in each storage area is held, and when the reproduction access is made in this state, the storage area for the low compression ratio is stored. The recorded audio signal data is read and output. Then, when the reproduction is completed, the audio signal data recorded in both storage areas are erased. On the other hand, when the recording time reaches the recordable time, the audio signal data in the low compression ratio storage area of the RAM 19 is erased, the storage area is opened, and the two compression rates are set in the storage area. Each is reassigned for recording, and continuously received audio signals are continuously recorded.

In this embodiment, a message with high sound quality can be reproduced in normal use, and when the voice signal of the message is long, the voice signal data in the low compression ratio storage area is erased and the storage area is opened. Then, since it is possible to record at each of the two types of compression rates in the storage area, there is an effect that it is possible to cope with a message that occasionally occurs for a long time.

Example 12 In the eleventh embodiment,
Although the DSP 18 is illustrated as having the function of the recording time discriminating means 7b, it may be provided with the function of the recording capacity discriminating means instead of the recording time discriminating means 7b. In that case, the DSP 18 sets the recordable capacity of the storage area for the low compression ratio, determines the recordable capacity based on the measurement of the time when the audio signal is received, and the recordable capacity reaches the recordable capacity. When this is done, the audio signal data recorded in the high compression ratio storage area of the RAM 19 is held, and
The audio signal data in the low compression rate storage area is erased, the storage area is opened, and the storage area is reallocated so that the two compression rates can be recorded respectively.

In the present embodiment as well, similar to the eleventh embodiment, it is possible to reproduce a message with high sound quality in normal use and to deal with a message that occasionally lasts for a long time.

Example 13. FIG. 11 is a block diagram of a voice recording device for explaining the thirteenth embodiment, and FIG. 12 is an explanatory diagram for explaining allocation of storage areas of storage means in the present embodiment.

In this embodiment, the low compression rate storage area side is repeatedly allocated until the storage means 2 is filled with audio signal data. The function is included in the recording time discriminating means 7c, for example, the recordable time of the low compression ratio storage area of the storing means 2 is set, the recording time is discriminated based on the measuring time of the time measuring means 4, and the recording time is When the recordable time of the low compression rate storage area is reached (see a in FIG. 12), the audio signal data recorded in the high compression rate storage area is held and the audio signal of the low compression rate storage area is held. The data is erased to release the storage area (see b in FIG. 12), and the storage area is allocated so that it can be recorded at each of the two compression rates (see c in FIG. 12). When the low compression rate storage area is filled with audio signal data, the low compression rate audio signal data is erased again to release the storage area (see d in FIG. 12), and then released. The high compression rate storage area and the low compression rate storage area are allocated in the storage area, and this operation is repeated until the storage means 2 is filled with audio signal data having a high compression rate (see e in FIG. 12). When the function of the recording capacity discriminating means 7c is applied to the telephone shown in FIG.
SP18 will have that function.

When the voice signal of the message is received by the line interface 12 in the telephone of FIG.
18 sets a high compression rate and a low compression rate in the codec 17. At this time, the codec 17 digitally converts the audio signal at each compression rate and outputs it to the DSP 18. The DSP 18 stores the digitally converted audio signal data of the same content in the memory interface unit 1.
8c is used to record in the high compression rate storage area and the low compression rate storage area of the RAM 19 respectively, and it is determined whether the recording time has reached a preset recordable time of the low compression rate storage area. To do. When the recording of the audio signal is completed within the recordable time, the audio signal data recorded in each storage area is held, and when the reproduction access is made in this state, the storage area for the low compression rate is stored. The audio signal data recorded in is read and output. Then, when the reproduction is completed, the audio signal data recorded in both storage areas are erased.

On the other hand, when the recording time reaches the recordable time, the audio signal data in the low compression rate storage area of the RAM 19 is erased and the storage area is opened, and the two types of the above-mentioned two types are stored in the storage area. It is re-allocated so that it can be recorded at each compression rate, and continuously received audio signals are continuously recorded. When the low compression rate storage area is filled with audio signal data, the low compression rate audio signal data is erased again to release the storage area,
Then, in the opened storage area, it is allocated to a high compression rate storage area and a low compression rate storage area. further,
When the storage area for low compression ratio becomes full with audio signal data, as described above, the audio signal data of low compression ratio is erased and the storage area is released, and the high compression ratio is set in the opened storage area. The storage area and the storage area for a low compression rate are allocated, and this is repeated until the RAM 19 is filled with audio signal data of a high compression rate.

In this embodiment, a message of high sound quality can be reproduced in normal use, and when the voice signal of the message is long, a low compression rate memory is stored until the RAM 19 is filled with the voice signal data of a high compression rate. Since the area side is repeatedly allocated for the high compression rate and the low compression rate, there is an effect that even a message for a long time can be dealt with.

Example 14. In the thirteenth embodiment,
The recording time discriminating means 7c which repeatedly allocates the low compression ratio storage area with two kinds of compression ratios until the RAM 19 is filled with the audio signal data of the high compression ratio has been exemplified, but the allocation is recorded based on the measurement time. A recording capacity determining means for determining the capacity may be used. Also in this embodiment, it is possible to reproduce a message with high sound quality in normal use and to cope with a message for a long time.

Example 15. FIG. 13 is a block diagram of a voice recording device for explaining the fifteenth embodiment. In the present embodiment, the audio signal is stored in the storage unit 2 at n types of compression rates.
The recording time is determined by the recording time determining means 7
The recordable time of the storage area of d, which is recorded at the highest compression rate among the n types of compression rates, is set.
The recording time is discriminated based on the measured time, and when the recording time reaches the recordable time, the audio signal data recorded in the storage area for the highest compression ratio of the storage means 2 is erased to change the storage area. It is released and reallocated so that it can be recorded in each of the n types of compression ratios in the opened storage area. When the function of the recording capacity determining means 7b is applied to the telephone shown in FIG. 2, the DSP 18 has the function. Further, the codec 17 converts each of the audio signals into n types of compression rates when digitally converting the audio signals, and n storage areas are allocated to the RAM 19.

When the voice signal of the message is received by the line interface 12 in the telephone of FIG.
18 sets n types of compression rates in the codec 17. At this time, the codec 17 digitally converts the audio signal into n types of compression rates and outputs the digital signal to the DSP 18.
The DSP 18 records n kinds of digitally converted audio signal data of the same content in n storage areas of the RAM 19 via the memory interface section 18c, respectively, and at the same time, the recording time is set to a preset recordable time. Determine if it has been reached. When the recording of the audio signal is completed within the recordable time, the audio signal data recorded in each storage area is retained, and when the reproduction access is made in this state, the recording is performed at the highest compression rate. The audio signal data in the stored storage area is read and output. Then, when the reproduction is completed, the audio signal data recorded in the n storage areas is erased. On the other hand, when the recording time reaches the recordable time, the audio signal data of the storage area recorded at the highest compression rate is erased, the storage area is opened, and the n types of compression are performed in the storage area. Reassign to be able to record each at a rate,
Audio signals that are continuously received are continuously recorded at the n types of compression rates.

In the present embodiment, since messages of the same content can be simultaneously recorded with n types of compression ratios, various types of messages ranging from high-quality sound to low-quality sound can be recorded in normal use. This has the effect of being able to handle messages that last for a long time.

Embodiment 16 FIG. In the fifteenth embodiment,
When the recording time determined based on the measured time reaches the recordable time of the storage area having the highest compression rate, the recording time determination means 7d for allocating the storage area to n storage areas is provided.
Although the SP18 is exemplified, a recording capacity determination unit that determines the recording capacity based on the measurement time and, when the capacity reaches the recordable capacity of the storage area having the highest compression rate, allocates the storage area to n. It may be the DSP 18 that has it. Also in the present embodiment, as in the fifteenth embodiment, various kinds of messages ranging from high-quality sound to low-quality sound can be recorded in normal use, and there is an effect that even a long-time message can be dealt with.

[0059]

As described above, according to the present invention, the recording time of the audio signal is discriminated based on the measuring time of the time measuring means, and the voice recorded in each storage area of the storing means is judged based on the discrimination. One of the signal data is erased, the storage area side is opened, and the storage area is re-allocated so that it can be recorded at a high sampling frequency and a low sampling frequency respectively. Can be played back, and it is possible to respond to occasional long messages.

When the recordable time of the storage area in which the audio signal data is recorded at the high sampling frequency is set and the recording time reaches the recordable time, the audio signal data recorded at the high sampling frequency is recorded. Since the memory area is deleted and the memory area is opened and the memory area is re-allocated so that recording can be performed at a high sampling frequency and a low sampling frequency respectively, a message with high sound quality is reproduced in normal use as described above. The effect is that it is possible to deal with occasionally long messages.

Furthermore, a plurality of recordable times of the storage area in which the audio signal data is recorded at the high sampling frequency are provided, and the audio signal data recorded at the high sampling frequency is recorded every time the recording time reaches the recordable time. Erasing and opening the storage area side, allocating a storage area so that each can be recorded at a high sampling frequency and a low sampling frequency, and repeat this until the storage means is filled with audio signal data of a low sampling frequency. Therefore, in normal use, it is possible to reproduce a message with high sound quality, and even if the message is long, it is possible to cope with it.

Furthermore, the recordable time of the storage area in which the audio signal data is recorded is set at the highest sampling frequency of the n kinds of sampling frequencies, and the recording time of the audio signal is determined based on the measurement time of the time measuring means. Then
When the recording time reaches the recordable time, the audio signal data recorded at the highest sampling frequency is erased, the storage area side is opened, and stored again so that recording can be performed at n kinds of sampling frequencies. Since the area is allocated, it is possible to record various kinds of messages ranging from high-quality sound to low-quality sound in normal use, and it is possible to cope with occasional long-time messages.

Further, the recordable capacity of the storage area where the audio signal data is recorded at a high sampling frequency is set, the recording capacity of the audio signal is discriminated based on the measurement time of the time measuring means, and the recording capacity is the recordable capacity. When it reaches the limit, the audio signal data recorded at the high sampling frequency is erased, the storage area side is opened, and the storage area is allocated again so that the recording can be performed at the high sampling frequency and the low sampling frequency respectively. Even when the means is provided, it is possible to reproduce a message with high sound quality in normal use as in the above case, and it is possible to deal with a message occasionally for a long time.

Furthermore, the audio signal data recorded at a high sampling frequency is recorded at a high sampling frequency each time a plurality of recordable capacities are stored in the storage area where the audio signal data is recorded at a high sampling frequency. A recording capacity that erases and opens the storage area side, allocates a storage area so that recording can be performed at a high sampling frequency and a low sampling frequency, and repeats this until the storage means is filled with audio signal data of a low sampling frequency. Even when the discriminating means is provided, it is possible to reproduce a message with high sound quality in the normal use as in the above, and it is possible to cope with a long message even if the message is long.

Further, according to the present invention, the recording time of the audio signal is discriminated based on the measurement time of the clocking means, and based on the discrimination, the audio signal data recorded in each storage area of the storage means is recorded. Since one side is erased, the storage area side is released, and the storage area is reassigned so that recording can be performed at a high compression rate and a low compression rate, respectively, a message with high sound quality can be reproduced in normal use, It has the effect of being able to handle occasional long messages.

Furthermore, when the recordable time of the storage area in which the audio signal data is recorded at a low compression rate is set and the recording time reaches the recordable time, the audio signal data recorded at a low compression rate is set. At the same time as erasing, the storage area side was opened, and the storage area was re-allocated so that it could be recorded with high compression rate and low compression rate respectively.
Similar to the above, in normal use, it is possible to reproduce a high-quality message, and it is possible to deal with a message that occasionally lasts for a long time.

Furthermore, a plurality of recordable times of the storage area in which the audio signal data is recorded at a low compression rate are provided, and the audio signal data recorded at a low compression rate is erased every time the recording time reaches the recordable time. At the same time, the storage area side is opened, a storage area is allocated so that recording can be performed at a high compression rate and a low compression rate, and this is repeated until the storage means is filled with audio signal data with a high compression rate. Therefore, there is an effect that a message with high sound quality can be reproduced in normal use, and even if the message is long, it can be dealt with.

Further, the recordable time of the storage area in which the audio signal data is recorded at the lowest compression rate among the n types of compression rates is set, and the recording time of the audio signal is determined based on the measurement time of the time measuring means. , When the recording time reaches the recordable time, the audio signal data recorded at the lowest compression rate is erased, the storage area side is opened, and recording is performed again at n types of compression rates. Since the storage area is allocated, various types of messages from high-quality sound to low-quality sound can be recorded in normal use,
It is also effective in dealing with occasional long messages.

Further, the recordable capacity of the storage area where the audio signal data is recorded at a low compression rate is set, the recording capacity of the audio signal is discriminated based on the measurement time of the time measuring means, and the recording capacity is the recordable capacity. When the recording capacity is reached, the audio signal data recorded at a low compression rate is erased, the storage area side is opened, and the storage area is reassigned so that recording can be performed at a high compression rate and a low compression rate. Even when the means is provided, it is possible to reproduce a message with high sound quality in normal use as in the above case, and it is possible to deal with a message occasionally for a long time.

Further, a plurality of recordable capacities of the storage area for recording the audio signal data at a low compression rate are provided, the recording capacity of the audio signal is discriminated based on the measurement time of the time measuring means, and the recording capacity can be recorded. Each time the capacity is reached, the audio signal data recorded at a low compression rate is erased, the storage area side is opened, and a storage area is allocated so that it can be recorded at a high compression rate and a low compression rate, respectively. Even if the means is equipped with a recording capacity determination means that repeats until the audio signal data with a high compression rate is filled up, a message with high sound quality can be reproduced in normal use as described above, and if the message is long, The effect of being able to cope with it has been obtained.

Further, the recording capacity of the audio signal is discriminated based on the time measured by the time measuring means, and based on the discrimination, one of the audio signal data recorded in each storage area of the storage means is erased and Open the storage area side,
Even when the recording capacity determining means for allocating the storage area again so as to be able to record each of the two kinds of sampling frequencies or the two kinds of compression ratios is provided, a message with high sound quality can be reproduced in a normal use, and occasionally a long time is required. It has the effect of being able to deal with messages that span.

[Brief description of drawings]

FIG. 1 is a block diagram for explaining an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration example of a telephone having a function of the voice recording device of the present invention.

FIG. 3 is a block diagram of an audio recording device for explaining a second embodiment.

FIG. 4 is a block diagram of an audio recording device for explaining a third embodiment.

FIG. 5 is a block diagram of an audio recording device for explaining a fifth embodiment.

FIG. 6 is an explanatory diagram for explaining allocation of storage areas of storage means in a fifth embodiment.

FIG. 7 is a block diagram of an audio recording device for explaining a seventh embodiment.

FIG. 8 is a block diagram for explaining a ninth embodiment of the present invention.

FIG. 9 is a block diagram of an audio recording device for explaining a tenth embodiment.

FIG. 10 is a block diagram of an audio recording device for explaining an eleventh embodiment.

FIG. 11 is a block diagram of an audio recording device for explaining a 13th embodiment.

FIG. 12 is an explanatory diagram for explaining allocation of storage areas of storage means in the thirteenth embodiment.

FIG. 13 is a block diagram of an audio recording device for explaining a fifteenth embodiment.

[Explanation of symbols]

1 A / D converter, 2 storage means, 3 D / A converter,
4 clocking means, 5 recording time discriminating means, 6 compression rate controlling means.

Claims (13)

[Claims] 1. An A / D converter for digitally converting a voice signal of a message into a high sampling frequency and a low sampling frequency, and digitally converted voice signal data respectively stored in pre-allocated storage areas. Storage means for recording, D / A converter for converting the audio signal data read from the storage means into an analog signal and outputting a sound signal, time measuring means for measuring time, and a time measured by the time measuring means The recording time of the audio signal is discriminated, and based on the discrimination, one of the audio signal data recorded in each storage area of the storage means is erased and the storage area side is opened, and the two types And a recording time determining means for allocating a storage area again so that recording can be performed at each sampling frequency. Apparatus. 2. The recording time discriminating means sets a recordable time of a storage area in which audio signal data is recorded at a high sampling frequency, and when the recording time reaches the recordable time, a high sampling frequency is set. 2. The audio recording apparatus according to claim 1, wherein the audio signal data recorded in 1 is erased, the storage area side is opened, and the storage area is reassigned so that the two kinds of sampling frequencies can be recorded respectively. . 3. The recording time discriminating means has a plurality of recordable times of a storage area in which audio signal data is recorded at a high sampling frequency, and a high sampling frequency is set every time the recording time reaches the recordable time. In addition to erasing the audio signal data recorded in step 1, the memory area side is opened, and a memory area is allocated so that each of the two kinds of sampling frequencies can be recorded. 2. The audio recording device according to claim 1, wherein the process is repeated until it becomes full. 4. An A / D converter that digitally converts a voice signal of a message at n kinds of sampling frequencies, and a storage unit that records each digitally converted voice signal data in a pre-allocated storage area. A D / A converter for converting the audio signal data read from the storage means into an analog signal and outputting the audio signal; a time measuring means for measuring time; and a sampling frequency with the highest sampling frequency of n kinds of sampling frequencies. When the recordable time of the storage area in which the audio signal data is recorded is set, the recording time of the audio signal is determined based on the measurement time of the timekeeping means, and when the recording time reaches the recordable time, it is the highest. The audio signal data recorded at the sampling frequency is erased and the storage area side thereof is opened to perform the n types of sampling. Sound recording apparatus characterized by comprising a recording time discriminating means for assigning again storage area can be recorded respectively in wave number. 5. The recording time determining means sets a recordable capacity of a storage area in which audio signal data is recorded at a high sampling frequency, and determines the recording capacity of the audio signal based on the measurement time of the time measuring means. , When the recording capacity reaches the recordable capacity, the audio signal data recorded at a high sampling frequency is erased, the storage area side is opened, and the storage area is reopened so that the recording can be performed at the sampling frequency. 5. The audio recording apparatus according to claim 2 or 4, wherein the audio recording apparatus comprises a recording capacity determining means to be assigned. 6. The recording time discrimination means has a plurality of recordable capacities of a storage area in which audio signal data is recorded at a high sampling frequency, and a high sampling frequency is set every time the recording time reaches the recordable capacity. In addition to erasing the audio signal data recorded in step 1, the memory area side is opened, and a memory area is allocated so that each of the two kinds of sampling frequencies can be recorded. 4. The audio recording device according to claim 3, wherein the audio recording device is constituted by a recording capacity discriminating means which repeats until it becomes full. 7. An A / D converter that digitally converts a voice signal of a message at a high compression rate and a low compression rate, and digitally converted respective voice signal data in pre-allocated storage areas, respectively. Storage means for recording, D / A converter for converting the audio signal data read from the storage means into an analog signal and outputting a sound signal, time measuring means for measuring time, and a time measured by the time measuring means The recording time of the audio signal is discriminated, and based on the discrimination, one of the audio signal data recorded in each storage area of the storage means is erased and the storage area side is opened, and the two types Recording time discriminating means for allocating a storage area again so that recording can be performed at each compression rate. 8. The recording time determination means sets a recordable time of a storage area in which audio signal data is recorded at a low compression rate, and when the recording time reaches the recordable time, a low compression rate is set. 8. The audio recording device according to claim 7, wherein the audio signal data recorded in step (5) is erased, the storage area side is opened, and the storage area is reassigned so that the two types of compression rates can be recorded respectively. . 9. The recording time discriminating means has a plurality of recordable times of a storage area in which audio signal data is recorded at a low compression rate, and each time the recording time reaches the recordable time,
The audio signal data recorded at a low compression rate is erased, the storage area side is opened, and a storage area is allocated so that each of the two compression rates can be recorded. 8. The audio recording device according to claim 7, wherein the process is repeated until the signal data is full. 10. An A / D converter that digitally converts a voice signal of a message at n types of compression ratios, and a storage unit that records each digitally converted voice signal data in a pre-allocated storage area. A D / A converter for converting the voice signal data read from the storage means into an analog signal and outputting a voice signal; a time measuring means for measuring time; and a lowest compression rate among n types of compression rates. The recordable time of the storage area in which the audio signal data is recorded is set, the recording time of the audio signal is determined based on the measurement time of the time measuring means, and when the recording time reaches the recordable time, it is the lowest. A recording area is deleted so that the audio signal data recorded at the compression rate is erased, the storage area side is opened, and the storage area is re-allocated so that the data can be recorded at each of the n types of compression rates. Sound recording apparatus characterized by comprising a time determining means. 11. The recording time discriminating means sets a recordable capacity of a storage area in which audio signal data is recorded at a low compression rate, and discriminates a recording capacity of an audio signal based on a measurement time of the time measuring means. , When the recording capacity reaches the recordable capacity, the audio signal data recorded at a low compression rate is erased, the storage area side is opened, and the storage area is reopened so that the data can be recorded at the compression rate. 11. The audio recording device according to claim 8 or 10, wherein the audio recording device comprises a recording capacity determining means to be assigned. 12. The recording time discriminating means has a plurality of recordable capacities of a storage area in which audio signal data is recorded at a low compression rate, and discriminates a recording capacity of an audio signal based on a measurement time of the clocking means. Then, each time the recording capacity reaches the recordable capacity, the audio signal data recorded at a low compression rate is erased and the storage area side is opened so that the recording can be performed at each of the two compression rates. 10. The audio recording apparatus according to claim 9, further comprising a recording capacity determining means for allocating an area and repeating this until the storage means is filled with audio signal data having a high compression rate. 13. The recording time discriminating means discriminates a recording capacity of an audio signal based on a measuring time of the clocking means,
Based on the determination, one of the audio signal data recorded in each storage area of the storage means is erased and the storage area side is opened, and the two sampling frequencies or the two compression rates are used. 8. The audio recording apparatus according to claim 1, further comprising recording capacity determining means for allocating a storage area again so that recording can be performed.