WO1994000085A1 - Procede et systeme electronique de correction numerique de parole pour personnes souffrant d'un begaiement - Google Patents
Procede et systeme electronique de correction numerique de parole pour personnes souffrant d'un begaiement Download PDFInfo
- Publication number
- WO1994000085A1 WO1994000085A1 PCT/CA1993/000159 CA9300159W WO9400085A1 WO 1994000085 A1 WO1994000085 A1 WO 1994000085A1 CA 9300159 W CA9300159 W CA 9300159W WO 9400085 A1 WO9400085 A1 WO 9400085A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- analog
- digital
- speech
- output
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/58—Apparatus for correcting stammering or stuttering
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/04—Time compression or expansion
- G10L21/057—Time compression or expansion for improving intelligibility
- G10L2021/0575—Aids for the handicapped in speaking
Definitions
- the basis of the invention is the method and electronic system of the
- the invention is concerned with the structure of the small electronic, digital systems for processing of the acoustical signals for the therapy of the speech disorders, in particular for the stuttering people, for the use in various everyday situations.
- the method stems from psychoacoustics of hearing and speech production and the device design is based on the domain of digital electronics.
- circuit for generation of echo and reverberation contains input low-pass filter, which is connected with analog-to-digital converter, which is connected with binary shift register, and it in turn is connected with digital-to-analog converter, connected via output of low-pass filter with output of amplifier.
- control input of the binary shift register and clock input of the analog-to-digital converter are connected with clock generator with regulated frequency.
- the input of the input amplifier and output of the output amplifier are connected with telephone antilocal splitting system, which allows for the connection with the local, public telephone network.
- Described system of the echo-reverberator speech corrector although fulfills well its assumptions and qualifies for the miniaturization necessary for device carried by the user, exhibits fault, which is a small effectiveness for correcting speech disorders, such as deep breakage in the speech production or interference in the speech production caused by organic disorders of the hearing.
- the invention solves the subject of a new type of the speech correction method and a new type of the construction of the speech corrector, not showing the drawbacks of the known solution and allows for the correction of the speech fluency of the patient without masking of the acoustical signal of his speech and acoustical background signals, and it allows also for successful audiological treatment of the numerous speech disorders without neurosurgical intervention.
- the device may be used in various situations in every day living by the stuttering person. Characteristic for the device is, that it could be used continuously by the stuttering person, who carries it.
- Method of digital correction of speech for the stuttering people, through electronic signal processing in acoustical feedback loop, is characteristic in this according to the invention, that acoustical signal obtained from the stuttering person via microphone or contact microphone is splitted into two frequency bands, from which bandwidth with higher frequencies (for example higher than 4000 Hz) is passed in analog domain after amplification to the output electroacoustic transducer, and bandwidth with frequencies lower then for example 4000 Hz is sampled and processed with analog-to-digital converter with regulated sampling frequency typically being not lower then 8 kHz and with resolution not lower then 8 bit.
- bandwidth with higher frequencies for example higher than 4000 Hz
- Signal obtained in this fashion is digitally via tone shifting downwards, particularly by 1 or 3/4 or 1/2 or 1/4 octave or upwards by 1/4 or 1/2 octave, and simultaneously delayed from 0 to 250 ms, particularly delay discreetly switchable for example in sixteen steps.
- lower bandwidth of frequencies is next mixed with high-pass analog signal and as an output signal is regulated as to the amplitude and is sent to the electroacoustic transducer, for example headphones or bone vibrator.
- Optional modification of the method according to the invention is, that from the lower frequency bandwidth one extracts through known digital filtering algorithms the vocal tone of the , speech signal, and transposes its spectrum via shift in frequency or inversion of the phase or delay and next use it for the resynthesis of the speech signal with changed vocal tone.
- Another modification of the algorithm uses a procedure for the automatic triggering the lower frequency band processing when the input signal delivered by the transducer is sufficiently high in amplitude.
- the signal processing procedures are executed only in the case of speech production by the stutterer, otherwise the signal remains unaffected by any of the processing procedures and is not transmitted by the signal processing channel.
- the threshold of the digital signal processing channel triggering is selected using the multiple switch built-in to the device.
- Proposed digital system for correction of speech for the stuttering people containing known microphone and amplifier combined with electronic system for signal processing connected to headphone or bone vibrator, is characteristic by this in the invention, that electroacoustic transducer, particularly microphone or contact microphone is connected via linked in series input amplifier and low-pass filter to analog signal input of
- Programs for sound processing which are performed via microprocessor system include in particular: regulated frequency transposition (shift in frequency scale) upward or downward, regulated sound delay in the range from
- the mentioned program functions may be selected through the use of the built-in multiple switch (dip switch).
- the invention is described in detail in the example of its electronic implementation and is illustrated on the drawing introducing simplified block diagram for the digital speech corrector presented in Figure 1.
- the illustrated on the drawing circuit of the digital speech corrector works 120 as follows: basic function of shifting in the frequency band with simultaneous delay of the signal in the acoustical feedback path from microphone 1 to earphones 10 is accomplished in following manner, that signal from the input transducer 1 is relayed to input amplifier 2 and after amplification is filtered by low-pass filter 3. Non-filtered high-band 125 portion of the acoustical input signal is relayed via regulator 5 to output amplifier 9 via level regulator 8, and then to output electroacoustic transducer 10. Signal in the frequency band lower then 4000 Hz is processed by the analog-to-digital converter 4 containing sampling circuitry 11 and individual buffer memory 12. Digital signal is read by the microprocessor 14
- this switch is continuously read by the microprocessor 14. Signal is shifted up or down in the spectrum as it is described in the method. Samples of the signal are stored in the operating memory 16 of the RAM type. Buffering of the samples is important because of the realization of algorithms for signal processing. Set of programs for correction of various types of speech
- address decoder 19 allows for decoding of the memory addresses and analog-to-digital converter addresses. After processing in built in such a way microprocessor system, samples of the acoustical signal in low frequency bandwidth are converted to analog signal
- Source of the power is the rechargeable battery Uz, of which voltage is converted to stable supply voltage in the circuit 17 and via voltage inversion in circuit 18 to the negative supply voltage.
- circuits 4, 11, 12, 14, 19, 15, 16, 6 in common signal processing block (circuit,
- the electronic circuitry may be produced using the modern automated technology. Main elements of the device should be placed in one electronic chip using the ASIC chip production technique. The chip as well as the
- the electronic board should be placed
- the casing have to be designed in such a way that the potentiometers, DIP switch and sockets are to be available to the user without opening the casing.
- the device may be carried by the user in a shirt pocket or in the case of
- the input and output transducers should be connected to the device using flexible thin cables with small plugs.
- the device may be a subject to the electronic automated lot production. 75
- the plastic casing production may be also automatic using the injection moulding machines. The process of the testing of the device based on the computer measurement arrangement and may be also performed automatically.
Abstract
Cette invention est destinée à résoudre des problèmes relatifs à l'élaboration d'un procédé de correction numérique de parole et d'un correcteur actif de parole, piloté par microprocesseur, pour des personnes souffrant de bégaiement. Le type de correction numérique de parole pour des personnes souffrant de bégaiement et utilisant le traitement de signaux électriques dans une boucle de réaction acoustique se caractérise par le fait qu'un signal acoustique obtenu de la personne qui bégaie par l'intermédiaire d'un microphone ou d'un microphone de contact est divisé en deux bandes de fréquence, à partir desquelles la largeur de bande supérieure passe dans le domaine analogique, après avoir été amplifiée, vers le transducer de sortie électroacoustique, et la largeur de bande inférieure est échantillonnée et traitée à l'aide du convertisseur analogique/numérique. Le signal échantillonné aisni obtenu est traité de manière numérique par un décalage de tonalité vers le bas, et est simultanément retardé avec un régulation de l'intensité sonore. La largeur de bande inférieure de fréquences ainsi traitée est ensuite mélangée à un signal analogique passe-haut et est transmis sous forme d'un signal de sortie à un transducteur électroacoustique, par exemple des écouteurs ou un vibrateur osseux. L'invention se rapporte également au processeur numérique électronique utilisé pour l'application des algorithmes ci-dessus. La configuration de processeur est présentée dans la figure. La liste des symboles utilisés dans la figure est comme suit: (1) transducteur d'entrée électroacoustique dans le microphone particulier ou le microphone de contact; (2) amplificateur d'entrée; (3) filtre passe-bas; (4) convertisseur analogique/numérique; (5) régulateur de niveau d'amplification des signaux de sortie; (6) convertisseur numérique/analogique; (7) filtre de reconstitution passe-bas; (8) régulateur de gain du signal de sortie; (9) amplificateur de sortie; (10) transducteur électroacoustique de sortie dans l'écouteur particulier ou dans le vibrateur osseux; (11) circuit d'échantillonnage du convertisseur analogique/numérique; (12) mémoire tampon du convertisseur analogique/numérique; (13) bloc commutateur de/séquence de programmation multisection du microprocesseur; (14) microprocesseur; (15) mémoire programmable du microprocesseur; (16) mémoire fonctionnelle du microprocesseur; (17) convertisseur de tension de la tension d'alimentation; (18) inverseur de tension de la tension d'alimentation; (19) décodeur d'adresse du microprocesseur; (Uz) tension d'alimentation pour le circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU38858/93A AU3885893A (en) | 1992-06-19 | 1993-04-20 | Method and electronic system of the digital corrector of speech for stuttering people |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL29496592A PL168523B1 (pl) | 1992-06-19 | 1992-06-19 | Sposób korekcji wymowy osób jakajacych sie PL PL PL |
PLP-294965 | 1992-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994000085A1 true WO1994000085A1 (fr) | 1994-01-06 |
Family
ID=20057850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CA1993/000159 WO1994000085A1 (fr) | 1992-06-19 | 1993-04-20 | Procede et systeme electronique de correction numerique de parole pour personnes souffrant d'un begaiement |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU3885893A (fr) |
PL (1) | PL168523B1 (fr) |
WO (1) | WO1994000085A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002039423A1 (fr) * | 2000-11-13 | 2002-05-16 | Andrzej Czyzewski | Systeme de therapie et dispositif d'articulation de la parole |
EP1817769A2 (fr) * | 2004-12-02 | 2007-08-15 | Janus Development Group | Dispositif et procede pour la reduction de begaiement |
EP2193767A1 (fr) * | 2008-12-02 | 2010-06-09 | Oticon A/S | Dispositif pour le traitement du bégaiement |
DE102018202155A1 (de) * | 2018-02-13 | 2019-03-07 | Sivantos Pte. Ltd. | Sprechhilfe-Vorrichtung und Verfahren zum Betrieb einer Sprechhilfe-Vorrichtung |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4051331A (en) * | 1976-03-29 | 1977-09-27 | Brigham Young University | Speech coding hearing aid system utilizing formant frequency transformation |
US4464119A (en) * | 1981-11-10 | 1984-08-07 | Vildgrube Georgy S | Method and device for correcting speech |
-
1992
- 1992-06-19 PL PL29496592A patent/PL168523B1/pl unknown
-
1993
- 1993-04-20 AU AU38858/93A patent/AU3885893A/en not_active Abandoned
- 1993-04-20 WO PCT/CA1993/000159 patent/WO1994000085A1/fr active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4051331A (en) * | 1976-03-29 | 1977-09-27 | Brigham Young University | Speech coding hearing aid system utilizing formant frequency transformation |
US4464119A (en) * | 1981-11-10 | 1984-08-07 | Vildgrube Georgy S | Method and device for correcting speech |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002039423A1 (fr) * | 2000-11-13 | 2002-05-16 | Andrzej Czyzewski | Systeme de therapie et dispositif d'articulation de la parole |
EP1817769A2 (fr) * | 2004-12-02 | 2007-08-15 | Janus Development Group | Dispositif et procede pour la reduction de begaiement |
EP1817769A4 (fr) * | 2004-12-02 | 2008-05-28 | Janus Dev Group | Dispositif et procede pour la reduction de begaiement |
EP2193767A1 (fr) * | 2008-12-02 | 2010-06-09 | Oticon A/S | Dispositif pour le traitement du bégaiement |
DE102018202155A1 (de) * | 2018-02-13 | 2019-03-07 | Sivantos Pte. Ltd. | Sprechhilfe-Vorrichtung und Verfahren zum Betrieb einer Sprechhilfe-Vorrichtung |
Also Published As
Publication number | Publication date |
---|---|
PL294965A1 (en) | 1992-12-14 |
PL168523B1 (pl) | 1996-02-29 |
AU3885893A (en) | 1994-01-24 |
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