Method and electronic system of the digital corrector of speech for stuttering people

摘要

The invention is solving the subject of the design of the method of digital correction of speech and of the microprocessor-based active speech corrector for stuttering people. Type of digital correction of speech for stuttering people, through electronic signal processing in acoustical feedback loop is characteristic in this, that acoustical signal obtained from the stuttering person via microphone or contact microphone is divided into two frequency bands, from which higher bandwidth is passed in analog domain after amplification to the output electroacoustic transducer, and lower bandwidth is sampled and processed with analog-to-digital converter. Sampled signal obtained in this fashion is processed digitally via tone shifting downwards and simultaneously delayed with regulation of loudness. Processed in this fashion lower bandwidth of frequencies is next mixed with high-pass analog signal and as output signal is sent to electroacoustic transducer, for example earphones or bone vibrator. The invention includes also the electronic digital processor used for the implementation of the above algorithms. The processor configuration is presented in the figure. List of symbols used in the figure is as follows: (1) electroacoustic input transducer in particular microphone or contact microphone; (2) input amplifier; (3) low-pass filter; (4) analog-to-digital converter; (5) regulator of the output signals amplification level; (6) digital-to-analog convertor; (7) low-pass reconstruction filter; (8) gain regulator of the output signal; (9) output amplifier; (10) output electroacoustic transducer in particular earphone or bone vibrator; (11) sampling circuitry of the analog-to-digital converter; (12) buffer memory of the analog-to-digital converter; (13) block of multi-section programming sequence switch of the microprocessor; (14) microprocessor; (15) programmable memory of the microprocessor; (16) operating memory of the microprocessor; (17) voltage converter of the supply voltage; (18) voltage inverter of the supply voltage; (19) address decoder for the microprocessor; (Uz) supply voltage for the circuit.