SU807381A1

SU807381A1 - Speech parameter measuring device

Info

Publication number: SU807381A1
Application number: SU792759443A
Authority: SU
Inventors: Авенир Павлович Беликов; Игорь Алексеевич Карасев; Константин Викторович Тунис
Original assignee: Московский Государственный Педа-Гогический Институт Иностранныхязыков Им. M.Тореза
Priority date: 1979-04-27
Filing date: 1979-04-27
Publication date: 1981-02-23

Description

Изобретение относитс к приборостроению и может быть использовано при изготовлении устройства дл измерени параметров речи.The invention relates to instrument engineering and can be used in the manufacture of a device for measuring speech parameters.

Известно устройство.дл определени параметров речи, содержащее выделитель основного тона и измеритель звукового давлени I .A device for determining speech parameters is known, comprising a pitch extractor and a sound pressure meter I.

Однако это устройство не обеспечивает требуемую точность и достоверность измерении.However, this device does not provide the required accuracy and reliability of the measurement.

Известно также устройство дл определени основного тона речи и уровн звукового давлени , содержащее источники электрических сигналов звуковой частоты, св занные через переключатель с линейным усилителем, выход которого нагружен одновременно ка выделитель основного тона, сссю щий из последовательно соединенных фи гьтра низких частот, амплитудного детектора и компаратора, подключенного через преобразователь частота-амплитуда к электронно-лучевому осциллографу непосредственно , а к шлейфрвому осциллографу - через блок усилителей тока, а также нагружен на измеритель звукового давлени , состошций из- последовательно соединенных линейного детектора , интегратора и блока пам ти, выход которогО св зан с другшли входам электронно-лучевого осциллографа и блока усилителей тока 2 .It is also known a device for determining the fundamental tone of speech and the sound pressure level, containing sources of electrical audio signals, connected via a switch to a linear amplifier, the output of which is simultaneously loaded to a fundamental tone extractor, derived from series-connected low frequency frequencies, amplitude detector and a comparator connected via a frequency-amplitude converter to the electron-beam oscilloscope directly, and to a loop oscilloscope through an amplifier unit current, and is loaded by a sound pressure meter, sostoshtsy iz serially connected linear detector, an integrator and a memory unit, an output which is coupled to inputs drugshli cathode-ray oscilloscope and the current amplifier unit 2.

Однако это устройство также не обеспечивает требуемую точность и достоверность измерений ввиду того, что используемый в нем измеритель звукового давлени дает показани значени среднего уровн звукового давлени и не обеспечивает синхронности измерений по отношенинз к значению частоты основного тона.However, this device also does not provide the required accuracy and reliability of measurements due to the fact that the sound pressure meter used in it provides indications of the average sound pressure level and does not ensure synchronism of measurements in relation to the pitch frequency value.

Целью изобретени вл етс повышение точности и достоверности проводимых измерений.The aim of the invention is to improve the accuracy and reliability of the measurements.

Поставленна цель достигаетс тем что устройство снабжено блоком пропорциональной- задержки, выход которого св зан со вторым входом амплитудного детектора, а вход - с выхоД01 компаратора и вторым входом интегратора .The goal is achieved by the fact that the device is equipped with a proportional delay unit, the output of which is connected to the second input of the amplitude detector, and the input to the output of the comparator and the second input of the integrator.

На чертеже показано устройство дл измерени параметров основного тона речи..The drawing shows a device for measuring the parameters of the pitch of speech.

Claims

The device contains a linear amplifier 1, a low-frequency filter 2, an amplitude detector 3, a comparator 4 a converter 5 frequency-amplitude block b proportional delay, a microphone amplifier 7, a linear detector 8, integrator 9, block 10 pa mi, block 11 current amplifiers, electric A ri-lune oscilloscope 12 and a loop oscilloscope 13. A sound source, such as a tape recorder or a microphone with a microphone amplifier, is connected to the input of a linear amplifier 1, the output of which is connected to a pitch selector The connected low-pass filters 2, the amplitude detector 3 and the comparator 4, in feedback with which the proportional delay block B and the sound pressure measuring device connected to the amplitude detector 8, the integrator 9 and the memory block 10 are connected , a block of 11 current amplifiers and an electron-beam oscilloscope 12. The output of the pitch of the fundamental tone is connected to the integrator 9 of the sound pressure meter and, through a frequency converter-amplitude 5, to the electron-beam oscilloscope 12 and Locke 11 Wuxi divisors tokaJsv bound with a loop oscilloscope 13. The output sound pressure meter also associated with plaque com current amplifiers 11 and oscilloscope 12. The electron device operates sledukatsim manner. Speech signal from a tape recorder or microphone through a microphone amplifier, or from any other source of speech signal, is fed to the linear amplifier 1, and then to the pitch frequency generator, sound pressure level meter, current amplifiers block 11 and electron beam oscilloscope 12. In the frequency selector pitch using the filter 2 low frequencies, filtering the person Bouncing from the speech signal the most high-frequency harmonics, the amplitude detector 3 remembers the maximum values of the filtered and detected signal and stores these values in its memory for 50% of the time of the previous pitch period, then discharges from the signal of block 6 of the proportional delay, which remembers the values of each period of the pitch frequency and outputs a signal for discharge of the peak amplitude detector 3 after half the duration of the previous period. In the sound pressure meter, the sound signal is detected by its linear detector 8, integrated by the integrator 9, and the resulting sound pressure value is stored for subsequent recording of the memory blocks 10. The integrator integration time is variable, as the linear integrator is controlled by the pitch frequency selector. The linear integrator accumulates sound pressure measurement results over a single period of the pitch frequency. Thus, the proposed device allows continuous measurement of the specific sound pressure for each period of the frequency of the fundamental tone of speech. All obtained parameters can be recorded on a loop oscilloscope 13 or viewed visually on a multipath electron beam oscilloscope 12. In this case, the specific sound pressure level, pitch frequency and speech signal oscillogram can be recorded on the oscillograph paper. The proposed device provides a more detailed picture of the change in sound pressure over time and, thus, improves the accuracy and reliability of measurements. Apparatus of the Invention A device for measuring speech parameters containing sources of electrical audio signals connected via a switch with a linear amplifier, the output of which is loaded simultaneously to the main tone extractor, consisting of a series of connected low-pass filters, an amplitude detector and a comparator connected through a frequency converter - the amplitude to the electron-beam oscilloscope directly, and to the loopback signal. The graph - through the block of current amplifiers, and also loaded on from A sound pressure tester consisting of a series-connected linear detector, an integrator and a memory unit, the output of which is connected to other inputs of the electron-beam oscilloscope and current amplifiers block, which, in order to increase the accuracy and reliability of the measurements, are equipped with a proportional delay unit, the output of which is connected to the second input of the amplitude detector, and the input to the output of the comparator and the second input of the integrator. Sources of information taken into account in the examination 1. The author's certificate of the USSR 560346, cl. G 10 L 1/00, 1973.

2. Authors certificate of USSR 226310, cl. G 10 L 1/02, 1963 (prototype).