CN201139570Y - Double-channel double-signal source acumeter - Google Patents
Double-channel double-signal source acumeter Download PDFInfo
- Publication number
- CN201139570Y CN201139570Y CNU2007200820966U CN200720082096U CN201139570Y CN 201139570 Y CN201139570 Y CN 201139570Y CN U2007200820966 U CNU2007200820966 U CN U2007200820966U CN 200720082096 U CN200720082096 U CN 200720082096U CN 201139570 Y CN201139570 Y CN 201139570Y
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- pure tone
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Abstract
The utility model discloses a double-passage double-signal source sonometer, which comprises a signal source part, a volume control part and a transduction output part, which are communicated in sequence. The signal source part is divided into two paths of apposite digital signal sources, wherein, each digital signal source comprises a digital signal processor which generates pure tone signals and/or noise signals, a control switch which is connected with the digital signal processor and converts the continuous pure tone signals and/or noise signals into discontinuous pure tone signals and/or noise signals. The volume control part is divided into two paths of apposite volume control branch circuits, and any one volume control branch circuit comprises a power amplifier and an attenuator, which are communicated with the control switch in sequence. By adopting the double-passage double-signal source sonometer, two paths of sinusoidalsignals with different frequencies are respectively output, namely, a left earphone and a right earphone respectively send out a pure tone signal with different frequencies, or two paths of noise signals with different frequencies are output, namely, the left earphone and the right earphone respectively send out a noise signal with different frequencies.
Description
Technical field
This utility model relates to the audition checkout equipment, exactly relates to sonometer.
Background technology
Sonometer is the acoustic instrument of auditory function test usefulness, is used for aspects such as clinical, scientific research.The basic structure of state-of-the-art sonometer comprises the signal source part on the market at present, and volume control section is divided and the transducing output.Volume control section is divided into power amplifier and attenuator, and the transducing output is conductance earphone and speaker.Wherein its signal source partly comprises: A, agitator: produce 125～20kHz pure tone signal, audiometry needs 11 fixed frequencies by third-octave at least, as the signal source of sonometer; B, noise maker: produce white noise, produce narrow-band noise and speech noise by band filter again; C, switch controller: for avoiding the tired test error that causes of experimenter's organon auditus, on-off control is set continuous pure tone signal is transformed into interrupted pure tone signal, the sonometer of said structure is owing to have only a sinusoidal signal generator and a noise maker, sonometer that following several test signal combination can only be provided:
1. one tunnel sinusoidal signal, promptly left and right sides earphone provides a pure tone signal that frequency is identical
2. one tunnel noise signal, promptly left and right sides earphone provides a noise signal that frequency is identical
3. one tunnel sinusoidal signal and one tunnel noise signal, promptly left and right sides earphone respectively provides a pure tone signal and a noise signal
Along with the development of audiometry, the sonometer of traditional structure can't be for satisfying the demand to more test signal combination.As in the objective detection of tinnitus with shelter, just may provide the pure tone signal of different frequency at left and right sides ear.
The utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of sonometer that multiple test signal combination can be provided, adopt this utility model, can export the sinusoidal signal of two-way different frequency respectively, promptly left and right sides earphone respectively provides a pure tone signal that frequency is different; The perhaps noise signal of two-way different frequency, promptly left and right sides earphone respectively provides a noise signal that frequency is different.
The technical solution adopted in the utility model is as follows:
A kind of dual pathways dual signal source sonometer, comprise the signal source part, volume control section branch and the transducing output that are communicated with successively, it is characterized in that: described signal source partly is two-way derived digital signal arranged side by side, each way word signal source comprises the digital signal processor that produces pure tone signal and/or noise signal, is connected and described successive pure tone signal/noise signal is transformed into the gauge tap of alternate pure tone signal/noise signal with described digital signal processor; Described volume control section is divided into two-way volume control branch road arranged side by side, and any one tunnel volume control branch road comprises power amplifier and the attenuator that is communicated with described gauge tap successively; Described any way word signal source and any one tunnel volume branch road directly are communicated with or intersect connection.
Described transducing output comprise with any one tunnel volume control branch road on attenuator directly or intersect conductance earphone and the speaker that is communicated with.
Advantage of the present utility model is:
1, because this utility model adopts digital signal processor to replace existing sinusoidal signal generator and noise maker, each way word signal source both can produce the pure tone signal, can produce noise signal again, can export the sinusoidal signal of two-way different frequency respectively, promptly left and right sides earphone respectively provides a pure tone signal that frequency is different; The perhaps noise signal of two-way different frequency, promptly left and right sides earphone respectively provides a noise signal that frequency is different; Thereby multiple test signal combination mode is provided, has overcome the defective that existing sonometer can not satisfy more kinds of test signal combination demands.
2, this utility model is novel, simple in structure, for the novel acoustic acuity meter has been opened up a new road.
Description of drawings
Fig. 1 is a structural principle block diagram of the present utility model
The specific embodiment
As shown in Figure 1: a kind of dual pathways dual signal source sonometer, comprise the signal source part, volume control section branch and the transducing output that are communicated with successively, described signal source partly is a two-way derived digital signal arranged side by side, each way word signal source comprises the digital signal processor 1 that produces pure tone signal and/or noise signal, is connected and described successive pure tone signal/noise signal is transformed into the gauge tap 2 of alternate pure tone signal/noise signal with described digital signal processor 1; Described volume control section is divided into two-way volume control branch road arranged side by side, and any one tunnel volume control branch road comprises power amplifier 3 and the attenuator 4 that is communicated with described gauge tap 2 successively; Described any way word signal source and any one tunnel volume branch road directly are communicated with or intersect connection.Described transducing output comprise with any one tunnel volume control branch road on attenuator 4 directly or intersect conductance earphone 5 and the speaker 6 that is communicated with.
This utility model is partly made improvement to signal source on the structure of existing sonometer.Adopt the DSP signal source, will have the sonometer signal source now, become 2 arbitrarily signal generating devices, i.e. digital signal processor 1DSP by 1 sinusoidal signal generator and 1 noise maker.Thereby the various test signals that can provide existing sonometer institute not provide make up.As:
1. the sinusoidal signal of two-way different frequency, promptly left and right sides earphone respectively provides a pure tone signal that frequency is different
2. the noise signal of two-way different frequency, promptly left and right sides earphone respectively provides a noise signal that frequency is different
In addition, the DSP signal source can receive the digital signal that imports into the outside or audio signal so that prerecording signal or test signal (test microphone signal) when participating in the cintest to be provided.Also can generate the sinusoidal signal and the noise signal of different frequency characteristic by algorithm.
Claims (2)
1, a kind of dual pathways dual signal source sonometer, comprise the signal source part, volume control section branch and the transducing output that are communicated with successively, it is characterized in that: described signal source partly is two-way derived digital signal arranged side by side, each way word signal source comprises the digital signal processor (1) that produces pure tone signal and/or noise signal, is connected and described successive pure tone signal/noise signal is transformed into the gauge tap (2) of alternate pure tone signal/noise signal with described digital signal processor (1); Described volume control section is divided into two-way volume control branch road arranged side by side, and any one tunnel volume control branch road comprises power amplifier (3) and the attenuator (4) that is communicated with described gauge tap (2) successively; Described any way word signal source and any one tunnel volume branch road directly are communicated with or intersect connection.
2, dual pathways dual signal source sonometer according to claim 1 is characterized in that: described transducing output comprise with any one tunnel volume control branch road on attenuator (4) directly or intersect conductance earphone (5) and the speaker (6) that is communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200820966U CN201139570Y (en) | 2007-11-23 | 2007-11-23 | Double-channel double-signal source acumeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200820966U CN201139570Y (en) | 2007-11-23 | 2007-11-23 | Double-channel double-signal source acumeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201139570Y true CN201139570Y (en) | 2008-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200820966U Expired - Lifetime CN201139570Y (en) | 2007-11-23 | 2007-11-23 | Double-channel double-signal source acumeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201139570Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014172813A1 (en) * | 2013-04-27 | 2014-10-30 | 江苏贝泰福医疗科技有限公司 | Tinnitus treatment device |
| WO2014172814A1 (en) * | 2013-04-27 | 2014-10-30 | 江苏贝泰福医疗科技有限公司 | Tinnitus diagnosis and test device |
-
2007
- 2007-11-23 CN CNU2007200820966U patent/CN201139570Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014172813A1 (en) * | 2013-04-27 | 2014-10-30 | 江苏贝泰福医疗科技有限公司 | Tinnitus treatment device |
| WO2014172814A1 (en) * | 2013-04-27 | 2014-10-30 | 江苏贝泰福医疗科技有限公司 | Tinnitus diagnosis and test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081029 |