KR0170321B1 - Voice signal generating method and apparatus - Google Patents

Abstract

The present invention relates to a method for generating a voice signal and a device suitable therefor. More particularly, the present invention relates to a method for generating a voice signal, and more particularly, to sample and store predetermined voice data in a memory device, and to synthesize or edit the voice data according to a control signal or to change the voice level. The present invention relates to a voice signal generating method and apparatus.

The voice signal generating method according to the present invention can generate a variety of voice signals by sampling predetermined voice data and storing it in a memory device, and then synthesizing or editing the voice data or changing the voice level and time interval according to a control signal.

Therefore, the apparatus for generating a voice signal according to the present invention can reduce the size of the apparatus for generating a voice signal by generating a voice signal by varying the voice data recorded in the memory device.

Description

Voice signal generation method and device

1 is a block diagram of an audio signal generator according to the present invention.

2 is a flowchart of a voice signal generating method according to the present invention.

3 is a timing diagram of an embodiment of a voice signal generator according to the present invention.

* Explanation of symbols for main parts of the drawings

10: microprocessor 20: first channel

30: second channel 40: mixer

The present invention relates to a method for generating a voice signal and a device suitable therefor. More particularly, the present invention relates to a method for generating a voice signal, and more particularly, to sample and store predetermined voice data in a memory device, and to synthesize or edit the voice data according to a control signal or to change the voice level. The present invention relates to a voice signal generating method and apparatus.

Conventional voice signal generation method records and reproduces a specific voice signal to the memory device, for example, the sound from the beach or the natural sound from the mountain or river does not have any fixed sound, so the conventional method Listening to certain natural sounds makes the listener feel monotonous. In addition, when various natural sounds are recorded in the memory device, the size of the memory device becomes large.

An object of the present invention for solving the above problems is to store a variety of voice signals by sampling a predetermined voice data and storing it in a memory device and then synthesizing or editing the voice data according to a control signal or changing the voice level and time. The present invention provides a method and apparatus for generating a voice signal.

The voice signal generating method according to the present invention is a voice signal generating method for reproducing data for various types of sounds stored in a memory, and reads the data stored in the memory in accordance with a control signal for a selected type of environment. Transmitting a plurality of channels, converting data transmitted from the plurality of channels into a decoded and analog signal, and reproducing audio signals converted from the plurality of channels into decoded and analog signals by a channel selection control signal. And selecting and outputting a mixed audio signal of the selected channel.

According to an aspect of the present invention, there is provided a voice signal generating apparatus comprising: a memory device in which various voice data are digitally coded and recorded, and voice data recorded in the memory device according to a control signal for a selected type of environment. A microprocessor for generating a channel selection control signal for selecting and synthesizing the output signals of the plurality of channels according to a set mode, and transmitting the voice data read from the microprocessor to the plurality of channels. A plurality of channel decoders for decoding each, a channel-specific digital / analog converter for converting data decoded by the channel decoder into an analog signal, and an output signal of the channel-specific digital / analog converter according to the channel selection control signal Mixers for synthesis Characterized in that it comprises a.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

1 is a block diagram of a voice signal generating apparatus according to the present invention, comprising: a memory element (rom) 12 in which various voice signals are digitally sampled and recorded; The first channel 20 and the second channel for transmitting predetermined voice data recorded in the memory device to the mixer 40 according to the control signals CH, CLK, DATA, and STROBE output from the microprocessor 10. 30; A mixer 40 for mixing and outputting voice signals transmitted from the first channel 20 and the second channel; And a microprocessor 10 for interpreting the input control signal and generating CH, CLK, DATA, and STROBE signals for controlling the memory device 12, the first / second channels 20, 30, and the mixer.

The microprocessor 10 inputs a control signal corresponding to a mode selected by the user to interpret the meaning of the control signal, and then reads the audio data recorded in the memory device 12 to read the first channel 20 or the second channel. Channel 30 is controlled. The first channel 20 and the second channel 30 are composed of an ADPCM decoder 22, a gain controller 24, a D / A converter 26 and a low pass filter 28, respectively.

The first channel 20 converts voice data (hereinafter, referred to as a first audio signal) recorded in the memory device 12 into the mixer 40 according to the signals CH, CLK, DATA, and STROBE output from the microprocessor. The second channel 30 also transmits the second audio signal to the mixer 40 similarly to the first channel 20.

The mixer 40 mixes the first audio signal and the second audio signal and outputs them to the voice output means (speakers).

At this time, according to the control signal 1 input to the microprocessor 10, the voice signal is edited such as mixing of voice data read out from the memory element 12 or a change in voice level or a change in time interval.

In addition to a device for generating natural sound using a ROM in which voice data has already been recorded, a RAM may be used to modify or edit a necessary part by using a RAM.

Table 1 shows the data, time, and level of the audio signal recorded in the memory device 12 to explain the generation of the audio signal at the beach when the selection mode is 'the beach' in the audio signal generator having the configuration shown in FIG. Shown in

2 is a flowchart illustrating a method of generating a voice signal according to the present invention, which will be described with reference to FIG. 1 and Table 1. FIG.

When the user selects the beach mode, a predetermined control signal 1 is generated and the meaning of the control signal 1 is interpreted and judged by the microprocessor 10. (202)

After the meaning of the control signal 1 is interpreted, the microprocessor 10 generates predetermined control signals CH, CLK, DATA, and STROBE signals for reading the voice data recorded in the memory device 12, and thus the first channel. 20 is transmitted to the input terminal of the second channel 30. (203)

The voice data is selected from the memory device 12 according to the CH, CLK, DATA, and STROBE signals output from the microprocessor 10 (204), and the memory device through the first channel 20 and the second channel 30. Decodes the predetermined voice data recorded in (12), controls the gain, converts the first and second voice signals, and transmits them to the mixer 40. (206)

The mixer 40 mixes the voice signals transmitted through the first and second channels 20 and 30 and outputs them to the voice output means.

FIG. 3 shows a timing diagram by the audio signal generating apparatus according to the present invention, wherein CH, CLK, DATA and STROBE are control signals generated from the microprocessor 10 shown in FIG.

Here, CH is a control signal for selecting the first channel 20 and the second channel 30. When the level of the CH is' high ', the channel is selected as the first channel 20, and the level of the CH is' 'Low' means that the second channel 30 is selected. CLK, DATA, and STROBE are known control signals.

In addition, AUDIO1 and AUDIO2 are audio signals output from the first channel 20 and the second channel 30 shown in FIG. 1, respectively, and MIXER is audio signals output from the mixer 40. FIG.

The time interval between the A and H sections of the MIXER varies depending on the CH, CLK, DATA, and STROBE output from the microprocessor 10.

In other words, the voice data transmitted through the first channel 20 and the second channel 30 is mixed with time, and the output level (gain) of the voice data mixed in each of A to H sections of the MIXER is adjusted. Can produce a variety of effects.

As described above, the voice signal generation method according to the present invention samples various voice signals by sampling predetermined voice data and storing them in a memory device, and synthesizing the voice data according to a control signal, or editing or changing voice levels and time intervals. May occur.

Therefore, the voice signal generator according to the present invention can reduce the size of the voice signal generator by generating voice signals by variously changing voice data recorded in the memory device.

Claims (4)

A method of generating a voice signal for reproducing data for various types of sounds stored in a memory, the method comprising: reading out data stored in the memory in response to a control signal for a selected type of environment and transmitting the data to a plurality of channels; Converting data transmitted on the plurality of channels into a decoded and analog signal; And selecting a reproduced voice signal converted into a decoded and analog signal in the plurality of channels by a channel selection control signal, and mixing and outputting a voice signal of the selected channel. The method of claim 1, wherein the channel selection control signal comprises a command for synthesizing the signals of the plurality of channels so that the sound reproduction state is similar to natural sound, and controlling the gain of the signal of each channel. Voice signal generation method. A memory device in which various voice data are digitally coded and recorded; According to the control signal for the selected type of environment, the voice data recorded in the memory device is read and transmitted to a plurality of channels, and a channel selection control signal for selecting and synthesizing the output signals of the plurality of channels according to the set mode is generated. A microprocessor for making; A plurality of channel decoders for respectively decoding the voice data read out from the microprocessor in the plurality of channels; A channel-specific digital / analog converter for converting the data decoded by the channel decoder into an analog signal; And a mixer for selecting and synthesizing the output signal of the channel-specific digital / analog converter according to the channel selection control signal. The method of claim 3, wherein the channel selection control signal comprises a command for synthesizing the signals of the plurality of channels such that the sound reproduction state is similar to natural sound, and controlling gain of each channel signal. Voice signal generator.