SU1186194A1 - Apparatus for psychophysiological investigations of a man - Google Patents

Description

The invention relates to medicine, in particular, to devices for studying human immunity to the effects of speech stimuli and to determine its psychophysiological characteristics, and can be used for diagnostic purposes in psychophysiological studies.

The purpose of the invention is to expand the possibilities of research by taking into account the response to changes in the intensity and rate of speech exposure.

The drawing shows a block diagram of a device for human psychophysiological research.

The scheme contains the mechanism 1 transt porting tape, microphone

2 connected through a series-connected preamplifier20

3, modulator 4, attenuator 5 and power amplifier 6 with telephone 7, recording head 8, to which it is connected. Microphone 2 through serially connected preamplifier 25 3 and recording amplifier 9, playback head 10 connected through playback amplifier 11 to the first input of modulator 4, erasure head 12 connected to one output of high-frequency generator 13, and another output of high-frequency generator 13 also connected with the head 8 of the record. The device also contains a sinusoidal voltage generator 14 connected to the second input of the modulator 4, volume setting unit 15, delay setting unit 16, random signal generator 17 connected to the third input of modulator 4, speech rate evaluation unit 18 connected through volume setting unit 15 : with the fourth input of the modulator 4. In addition, the speech rate evaluation unit 18 is connected via the delay setting unit 16 to the magnetic tape transport mechanism 1.

I

The device works as follows, 50

The signal from microphone 2 is fed through the preamplifier 3 to the input of the recording amplifier 9 loaded on the recording head 8 and through the modulator 4 and attenuator 5 to the power amplifier 6 to which the phone 7 is connected. The voice of the subject is recorded on the magnetic tape. The input of the modulator 4 through the time interval due to the distance between the recording heads 8 and playback 10 and the speed of movement of the magnetic tape, through the amplifier 11 playback signals from the output of the head 10 playback. Thus, the device allows you to submit through the phones your own voice of the examinee at the time of pronouncing both synchronously and with a delay of 0.15-0.3 s and with the volume of speech influence exceeding the volume of the subject's voice by 20-40 dB.

The modulator 4 under the influence of control signals changes in the research process the level of the output signal of the amplifier 6 power. If the modulator 4 is affected by a control signal from the generator 17 of random signals, as a result, the telephone 7 is given a synchronous recording of the subject's own voice with a playback delay, the gain of which varies randomly within 20-40 dB. If the modulator 4 receives a control signal from a sinusoidal voltage generator 14, the amplification of the delayed speech signal varies sinusoidally with periods of 3, 5 or 10 s (set using an attenuator of the experimenter's choice) within 20-40 dB. When connecting to the modulator 4 of the speech rate evaluation unit 18 through the volume setting unit 15, the gain of the delayed speech signal will be proportional to the change in the speech rate (compared to the textual reading reading rate) within 20-40 dB. If the speech rate evaluation unit 18, via the delay setting unit 16, supplies a control signal to the magnetic tape transport mechanism 1, then the amount of delay during the study will vary inversely with the speech rate in the range 0.15-0.3 s.

There are five main modes of operation of the proposed device "

1st. A synchronous recording of the subject's own voice is sent to the phone, exceeding the last one in volume by 20-40 dB with a delay of reproduction by 0.15-0.3 s. In this? <Mode, the control signals are not post3 11

Payat.on modulator. The delay setting unit generates a signal that goes to the magnetic tape transport mechanism, as a result of which a fixed replay delay value is set within 0.15-0.3 s.

2nd. The modulator is affected by a control signal from a random signal generator. Similar to the 1st mode, a fixed value of the playback delay is set.

within 0.15-0.3 s. As a result, the phones are synchronized recording their own voice, the test subject with a playback delay within the specified limits and varying in loudness according to a random law, exceeding the subject's voice over the range of 2040 dB.

3rd. The modulator receives a control signal from the generator output sinusoidal voltage. The frequency of the output signal is set by 5 experimenters using an attenuator with a period of 3, 5 or 10 s. Similarly to the 1st mode, a fixed value of the playback delay is set within 0.15;

0.3 s. As a result, the phones are synchronized recording the subject's own voice with a playback delay of 0.150.3 s. Strengthening the delayed vocal. This signal varies sinusoidally with the frequency indicated above and with the subject exceeding the speaker’s loudness by 20–40 dB.

4th. The handset is fed synchronous _ί Nye own voice recording, a test with a delay that varies inversely with the rate of speech at each time point

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within 0.15-0.3 s. To do this, in the process of control reading, the operator fixes in 3-20 seconds the moments of the text being pronounced by the subject. In the speech rate evaluation unit, these time intervals are memorized. During the study, when the subject reads the same text, the operator again captures the moments of pronouncing the keywords and enters these values into the speech rate assessment unit.

In the speech rate assessment block, the corresponding time intervals obtained during the control reading and when testing T _{and are} compared, and their difference is calculated:

DT = T _to - T _c .

The output of the speech rate evaluation unit, proportional to the dT value, is fed to the delay setting unit. This block controls the transport mechanism of the magnetic tape in such a way that the playback delay is set within 0.15-0.3 s. The amount of delay is inversely proportional to the speech rate and may change during the course of the study.

5th A delayed speech signal is sent to the phone, the gain of which is proportional to the change in speech rate in the range of 20-40 dB. To do this, similarly to the 4th mode is measured. time interval DT. The signal from the output of the speech rate assessment unit, proportional to dT, is fed to the input of the volume setting unit. This block controls the modulator gain. As a result, the amplification of the delayed speech signal will depend on the speech rate.

There are additional modes of operation of the device, which are a combination of the main ones.

1186194

Claims (1)

A DEVICE FOR THE PSYCHOPHYSIOLOGICAL RESEARCH OF THE PERSON, containing a magnetic tape transport mechanism, a microphone connected to the input of the pre-amplifier, the first output of which is connected with the first input of the recording amplifier, the second input of which is connected to the first output of the playback amplifier connected to the playback head, the output of the recording amplifier and the first output of the high-frequency generator are connected to the recording head, the second output of the high-frequency generator is connected to the erase head, and the output of the attenuator through the power amplifier connected to the phone, characterized in that, in order to empower the study by taking into account the response to changes in the intensity and rate of speech exposure, it Additional input is a random signal generator, a sinusoidal voltage generator, a modulator, a volume setting unit, a delay setting unit and a speech rate evaluation unit whose output is connected to the input of the delay setting unit and to the input of the volume setting unit whose output is connected to the first modulator input, the second and the third inputs of which are connected respectively with the generator of sinusoidal voltage and with the generator of random signals, the output of the delay setting unit is connected to the transport mechanism of the magnetic flax s, and the fourth input of the ^modulator: associated with the second output of the playback amplifier and the second output of pre-amplifier, and the modulator output is connected to the input of the attenuator. 1186194