DE2234742A1 - SOUND DEVICE - Google Patents

Description

Dipl. Ing. H.-D. brnicke 89 Augsburg Schwibbogenplatz 2b

Dipl. Ing. H.-D. Ernicke patent attorney

Tel. (0821) 54035 Telegr. Technikrat Augsburg Augsburg H. July 1972 Your sign

_File 726-1 ni / cl

1.) George Edward Donovan, "George Hill '?,

24 Princess Street, Corseinon, Swansea, Glamorganshire, England 2.) Charles Edward Mark Hansel, 44 Eaton Crescent, Swansea, Glamorganshire, England

Hearing aid

The invention relates to a hearing device for Generation of audio frequency sequences optionally modulated with regard to frequency and amplitude, and above all takes place Application in the field of speech therapy, e.g. in ligation, treatment and the scientific Study of stuttering.

209885/0279

The invention relates to an audio frequency listening device including means for generating a substantially sustained low frequency tone, hereinafter referred to as "the Voice covering tone "; the invention further comprises means for periodically interrupting this tone, completely suppress or attenuate as well as means for setting the pulse duty factor to short or to obtain long impulses of the covering tone, the short impulses approaching a metronomic beat.

The device may also contain means for modulating the amplitude and / or the frequency of these pulses, to make them resemble linguistic tones.

The "sound covering the speech" is preferably essentially within the lower part of the audio frequency band, it can be, for example, a wave complex, the predominant components of which are in the lower part of the audible frequency band are located.

The device may further include means for detecting a person's speech and for applying a distorted one or slowed down the form of the same in order to supplement or replace the sound that covers the language.

The device according to the invention is illustrated using an example explained with reference to the drawing.

2 ~ 018 ~ 8 5/0 2 7 9

In this, O ^ is a Schmitt trigger that can be fixed with adjustable resistors RI and R2 for generating the same libertarian tones, the frequency can be set by R2 to about 180 Hg. The condenser oil can be in the range of 10 mF. The ¹ Aüsgäügsseite of. O ^ is connected to the first input of a UAfiD device whose Auagänisseite is connected in a conventional manner through C5 and R6 to a headphone, receiver or the like. S2 is a socket for connecting additional devices to the output of G-.

O ₂ is a similar Schmitt trigger for generating a lower frequency than that of the cover tone, for example 60 "to 90 Hz, which can be set using resistors R3 and R4. The value of capacitance C2 can be, for example, 2000 mf".

The output side of Op leads to a monostable multivibrator M with parallel capacities C3 and C4, which are optional through a set of contacts A, B, C of a multiple dial scarf ters S1 in the circuit can be switched on, with the other set of similarly labeled contacts between the off gang of the multivibrator M and the second input of the NAND gate G lies.

If the device is in operation, it enables - depending on Operator or patient wish - the choice of different acoustic effects. Is an energy source, e.g. a 4-, 5-volt dry battery, with switch S3 closed

" ^l4 : ·" - .20 98 88/0279

connected to the device and the switch S1 in position A, the overlapping input signal is at the gate G is not obstructed, so that a substantially continuous, masking noise through G to the receiver P. is directed.

In positions B and C, the steady output of O _{1 is} hindered, and at the same time a precisely shaped output signal of adjustable width is produced by M. The width of the transmission pulse depends on the setting of the variable resistor R5 by the patient or the therapist and the set values of the capacitances C3 and C4, which can be switched into the circuit by S1. For example, it can be determined that in position B both resistors C3 and C4 in the circuit are switched on and in position C the resistor C4 is open and only C3 remains switched on. If a circuit with suitable parameters is selected and the multiple switch S1 is expanded, the output signal of M can be changed through the resistor R5, so that a short pulse is produced which generates a metronomic clock in the receiver P or a series of longer pulses. The generally closed switch S4 is used to switch off the multivibrator output so that the patient, if he has difficulties, can suppress the stuttering by introducing the masking continuous noise.

R6 regulates the volume of P; other sockets like S2

- 5 - 209885/02 7 9

can still be provided. These allow the therapist to listen in and monitor the effects. In addition, auxiliary devices, such as recorders or signaling devices, can be connected to the output. In addition, input sockets (not shown) can be provided in order to fade a noise into the circuit that is generated by picking up the patient's voice with a pickup and through
Distortion and / or delay of the voice is generated.

Of course, oscillators other than the Schmitt trigger can also be used O. and Op for generating low frequency oscillations be used.

Claims

209885/02 79

Claims (10)

PATENT CLAIMS 1.) / Hearing device for speech therapy, marked by means (O ₁ ) for generating a tone that covers the language, means (M) for periodically interrupting or suppressing this tone for generating pulses of the cover tone and means (R5) for changing the pulse duty factor or the frequency or duration of the pulses. 2.) Hearing device according to claim 1, characterized by a first low frequency _{generator (O 1} ) for generating the cover tone, a second low frequency generator (Op), the output signal of which has a lower frequency than the cover tone and a headphone or similar converter (P), which is connected to the outcome of the two - II - 209885/0279 Generators connected by multiple switch elements (S1) which make it possible to feed any selection of generated tones to the transducer (P). 3.) Hearing device according to claim 2, characterized by pulse-shaping means (M) between the output of the second generator and the multiple switch are connected. 4.) Hörvörrichtuhg according to claim 3, characterized in that the pulse-shaping means one Multivibrator (M) have the means for varying the duration of the output pulses of the multivibrator (M) Has control by the multiple switch elements. 5.) Hearing device according to claim 4, characterized in that g e k e η η drawings.et, that the means for varying the pulse duration circuits with different time constants include, which can be switched on by the multiple switch elements (St) and capacities (03, C4) and by hand have adjustable resistances. 6.) Hearing device according to claim 3, 4 or 5, characterized by a gate with a to the transducer connectable output and two inputs, one of the inputs to the cover tone generator output and the other connected to the pulse-forming means (M) - III - 209885/0279 bar is through a multiple selection switch (S1), whereby different output signals can be selected, which between a continuous covering tone and a periodically interrupted or suppressed Cover tone vary, its pulse duration and / or frequency between a metronomic measure and a Pulse duty cycle ^ 1 is changeable. 7.) Hearing device according to claim 2 to 6, characterized by means for varying the amplitude of the cover tone and the output signal of the second low frequency generator to produce the output signal of the converter (P) to match speech tones. 8.) Hearing device according to claim 2 to 7, characterized in that both the cover tone generator (O ₁ ) and the second low frequency _{generator (O 2} ) are each formed by a Schmitt trigger. 9.) Hearing device according to claim 1 or the following, characterized by means for tapping a voltage from one point of the circuit for controlling additional devices, such as light signal or measuring devices. 10.) Hearing device for speech therapy, essentially like described above with reference to the drawing. 2QB88 S / 027 Q Bipi-Tng. H.-D. Ernicke ⁹ patent attorney INJECTED