CN102752068B - Communication system, dispensing device, reception device and communication means - Google Patents
Communication system, dispensing device, reception device and communication means Download PDFInfo
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- CN102752068B CN102752068B CN201210046579.6A CN201210046579A CN102752068B CN 102752068 B CN102752068 B CN 102752068B CN 201210046579 A CN201210046579 A CN 201210046579A CN 102752068 B CN102752068 B CN 102752068B
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Abstract
The present invention provides a kind of communication system, dispensing device, reception device and communication means.Audio frequency of broad band communication system can reduce from the audio level of the leakage audio frequency receiving device output it is thus possible to improve call privacy.Communication system by the microphone device (1) as dispensing device and is constituted as the speaker unit (15) receiving device.When inputting wide band audio signal, the balanced modulation that microphone device (1) carries out making the frequency of audio signal invert processes, frequency band lower than reference frequency in audio signal after frequency is inverted, sends DCS signal or actuating signal overlappingly.When receiving from the audio signal that microphone device (1) sends, speaker unit (15) reduce received by audio signal in, the signal of lower than reference frequency frequency band, the inverse balanced modulation carrying out making the frequency of audio signal again invert processes, output frequency be again reversed after audio signal.
Description
Technical field
The present invention relates to receive and dispatch the communication system of wide band audio signal, particularly to the skill improving call privacy
Art.
Background technology
In transceiver or home-use wireless phone etc., transmitting-receiving is make use of only to comprise audio band (300Hz
～3kHz) the communication system of audio signal of narrow-band.In the past, less expensive as the communication system utilizing this narrow-band
Ground realizes the technology of call privacy, it is proposed that following methods: both sides are designed with balanced modulator in transmitters and receivers,
Sender side sends the audio signal after making frequency reversion, makes received audio frequency again invert at receiver-side and restores
(referring for example to patent documentation 1 and patent documentation 2).
According to this existing method, even if (not there is balance adjust by other receptors from the audio signal of transmitter transmission
The receptor of device processed) receive, owing to the frequency of this audio signal is inverted, so being not easy to listen to the content of audio frequency.In the past, existed
In the communication system of narrow-band, so guarantee call privacy.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2-37852 publication
Patent documentation 2: Japanese Unexamined Patent Publication 7-307721 publication
But, conventional communication system is owing to can only receive and dispatch the narrow-band that only comprises audio band (300Hz～3kHz)
, so compared with the wide band situation comprising audio band (100Hz～15kHz), there is asking of tonequality reduction in audio signal
Topic.
Then, in order to improve tonequality, it is also considered that the method conventional system (communication system of narrow-band) used is straight
Scoop out and use in wide band communication system.But, only by merely conventional method being applied to wide band communication
System, it is impossible to obtain the call privacy that can be obtained by the communication system of narrow-band.For (frequency reversion after) after balanced modulation
Audio signal, deviation or variations in temperature etc. that the electrical characteristics of the electronic unit constituting balanced modulator can manufacture because of it and inclined
From preferable symmetry, comprise former audio frequency (audio signal before balanced modulation) as " leakage audio frequency ".Should " leakage audio frequency " bag
It is contained in the lower frequency side (audio band of mainly 300Hz～3kHz) of the audio signal after balanced modulation.
The high frequency side of the audio signal before the lower frequency side (low frequency side) of the audio signal after balanced modulation and balanced modulation
(altofrequency side) is corresponding, but in the case of being mainly audio frequency to the input of microphone, at former audio frequency (the audio frequency letter before balanced modulation
Number) in exceed audio band the composition of high frequency side few, therefore, the composition of the lower frequency side of the audio signal after balanced modulation is also
Few.To this end, receive by other receptors (not possessing the receptor of balanced modulator) in the audio signal sent from transmitter
In the case of, the lower frequency side of the audio signal after balanced modulation, the composition beyond " leakage audio frequency " is few as a result, " leak sound
Frequently " become easily to be listened to, there is the problem that cannot guarantee call privacy.
Summary of the invention
The present invention makes to solve above-mentioned problem of the prior art, even if its object is to provide in broadband
System (system of high tone quality) in also be able to reduce the audio level of leakage audio frequency it is thus possible to improve the logical of call privacy
Communication system.
The communication system of the present invention possesses the transmission dress of the audio signal of the frequency band for sending the regulation being transfused to
Put and receive the reception device of the above-mentioned audio signal sent from this dispensing device；It is characterized in that, this communication system have with
Lower composition, i.e. above-mentioned dispensing device possesses: the audio frequency input unit of the audio signal of input said frequencies frequency band, makes above-mentioned audio frequency
The audio signal frequency inversion portion of the height reversion of the frequency of signal, reduces and is made said frequencies by this audio signal frequency inversion portion
In audio signal after reversion, than first filtering part of audio signal of the low frequency band of reference frequency of regulation, by this
Overlapping and above-mentioned dispensing device and above-mentioned after first filtering part reduces, in the frequency band lower than said reference frequency
Receive the signal overlap portion of the relevant control signal of the action control of the Control on Communication between device or above-mentioned dispensing device, and
The sending part of the audio signal of the above-mentioned control signal of sending overlap；Above-mentioned reception device possesses: receive from above-mentioned dispensing device
The acceptance division of the audio signal sent, extracts the signal extraction of above-mentioned control signal from the audio signal received by this acceptance division
Portion, reduces in the above-mentioned audio signal received, the second filtering part of the signal of the frequency band lower than said reference frequency, enters
The audio frequency of the converse turn of process that the height of the frequency exercising the audio signal reduced by this second filtering part inverts again
Signal frequency inversion portion again, and export the audio output part of the audio signal after said frequencies is again reversed.
According to this composition, in dispensing device (such as microphone device), carry out the balance making the frequency of audio signal invert
Modulation treatment, the upper overlap of the frequency band (frequency band lower than reference frequency) of the lower frequency side of the audio signal after frequency inverts
DCS signal or actuating signal.Therefore, anti-even if the audio signal after frequency inverts comprises frequency as " leakage audio frequency "
In the case of audio signal before Zhuaning, the signal of its frequency band (frequency band of lower frequency side) is also existed by DCS signal or actuating signal
Acoustically shield, it is possible to make the leakage audio frequency exported from general speaker unit (speaker unit beyond the present invention) be difficult to
It is heard.On the other hand, in the speaker unit of the present invention, reduce the signal of its frequency band (frequency band of lower frequency side),
The inverse balanced modulation carrying out making the frequency of audio signal again invert processes, and the audio frequency after suitable output frequency inverts again is believed
Number.So, in wide band system (system of high tone quality), it is possible to shielding leakage audio frequency, it is possible to increase call privacy.Separately
Outward, in the audio signal after frequency inverts, reduce the signal of the frequency band of lower frequency side, it is ensured that for overlapping DCS signal or
The frequency band of actuating signal, thus, when DCS signal or actuating signal are overlapped in audio signal, it is possible to increase DCS believes
Number or the signal to noise ratio (S/N) of actuating signal.
It addition, in the communication system of the present invention, above-mentioned control signal could be for for above-mentioned reception device carry out from
The DCS signal individually received of the above-mentioned audio signal that above-mentioned dispensing device sends or for carrying out for above-mentioned reception device
The actuating signal of compulsory exercise.
It addition, in the communication system of the present invention, said reference frequency can be about 3kHz.Said reference frequency is such as
Can be 2.8kHz～3.2kHz.
It addition, in the communication system of the present invention, above-mentioned reception device can possess: from the above-mentioned audio signal received
Extract above-mentioned DCS signal or the extraction unit of above-mentioned actuating signal, and be made whether that output is from above-mentioned based on above-mentioned DCS signal
Send the switching of the above-mentioned audio signal that device receives or carry out the process of above-mentioned compulsory exercise based on above-mentioned actuating signal
Portion.
According to this composition, it is possible to based on DCS signal by receiving the sound that device is made whether that output receives from dispensing device
Frequently the switching (squelch control) of signal.Or, it is possible to it is transmitted the rule indicated by device based on actuating signal by receiving device
Determine action (volume adjusts or battery allowance shows).
The dispensing device of the present invention is the dispensing device in communication system, and this communication system possesses and is transfused to for sending
The reception of the above-mentioned audio signal that the dispensing device of the audio signal of the frequency band of regulation and reception send from this dispensing device
Device, in above-mentioned reception device, when receiving from the audio signal that above-mentioned dispensing device sends, is being extracted the control of regulation
After signal, reduce in above-mentioned received audio signal, compare the signal of the low frequency band of the reference frequency specified, carry out
At make that the frequency reducing the audio signal after the signal of the frequency band lower than said reference frequency inverts again converse turn
Reason, and the height exporting said frequencies be again reversed after audio signal, it is characterised in that above-mentioned dispensing device possesses: defeated
Enter the audio frequency input unit of the audio signal of said frequencies frequency band, make the audio signal of the height reversion of the frequency of above-mentioned audio signal
Inversion portion, reduction is made in the audio signal after said frequencies reversion by this audio signal frequency inversion portion, ratio said reference frequency
First filtering part of the audio signal of low frequency band, after being reduced by this first filtering part, overlapping as than on
State the low frequency band of reference frequency signal and Control on Communication between above-mentioned dispensing device and above-mentioned reception device or
The signal overlap portion of the control signal that the action control of above-mentioned dispensing device is relevant, and the sending overlap sound of above-mentioned control signal
Frequently the sending part of signal.
According to this dispensing device, as described above, it is also possible in wide band system (system of high tone quality), shielding is let out
Leakage audio frequency, it is possible to increase call privacy.
In above-mentioned dispensing device, above-mentioned control signal could be for carrying out from above-mentioned transmission for above-mentioned reception device
The DCS signal individually received of the above-mentioned audio signal that device sends or for carrying out compulsory exercise for above-mentioned reception device
Actuating signal.
The reception device of the present invention is the reception device in communication system, and this communication system possesses and is transfused to for sending
The reception of the above-mentioned audio signal that the dispensing device of the audio signal of the frequency band of regulation and reception send from this dispensing device
Device, in the dispensing device of above-mentioned communication system, when inputting the audio signal of said frequencies frequency band, carries out making above-mentioned audio frequency
The audio signal frequency reversion of the height reversion of the frequency of signal processes, after the control signal being extracted regulation, above-mentioned
The height of frequency be inverted after audio signal on, the overlapping signal as the frequency band lower than the reference frequency specified with
Control on Communication between above-mentioned dispensing device and above-mentioned reception device or the relevant control of the action control of above-mentioned dispensing device
Signal, the sending overlap audio signal of above-mentioned control signal, it is characterised in that this reception device possesses: receive from above-mentioned
Send the acceptance division of the audio signal that device sends, reduce in above-mentioned received audio signal, lower than said reference frequency
The filtering part of the signal of frequency band, carries out making to reduce the letter of the audio frequency after the signal of the frequency band lower than said reference frequency
Number the audio signal inversion portion again of converse turn of process that again inverts of the height of frequency, and output said frequencies is by the most anti-
The audio output part of the audio signal after Zhuaning.
According to this reception device, as described above, it is also possible in wide band system (system of high tone quality), shielding is let out
Leakage audio frequency, it is possible to increase call privacy.
In above-mentioned reception device, above-mentioned control signal could be for carrying out from above-mentioned transmission for above-mentioned reception device
The DCS signal individually received of the above-mentioned audio signal that device sends or for carrying out compulsory exercise for above-mentioned reception device
Actuating signal.
The communication means of the present invention is used in communication system, and this communication system possesses the regulation being transfused to for transmission
The dispensing device of audio signal of frequency band and receive the reception dress of the above-mentioned audio signal sent from this dispensing device
Put, it is characterised in that this communication means comprises the steps of and utilizes above-mentioned dispensing device, when input audio signal, make above-mentioned
The height reversion of the frequency of the audio signal being transfused to；In the audio signal that said frequencies is inverted, overlapping as than regulation
The low frequency band of reference frequency and the Control on Communication between above-mentioned dispensing device and above-mentioned reception device or above-mentioned
Send the control signal that the action control of device is relevant；The sending overlap audio signal of above-mentioned control signal；Utilize above-mentioned reception
Device, when receiving from the audio signal that above-mentioned dispensing device sends, extracts the control signal of regulation；Reduce and receive above-mentioned
Audio signal in, the signal of lower than said reference frequency frequency band；Make to reduce the frequency lower than said reference frequency
The height of the frequency of the audio signal after the signal of frequency band inverts again；Audio frequency after output said frequencies is again reversed is believed
Number.
According to this communication means, as described above, it is also possible in wide band system (system of high tone quality), shielding is let out
Leakage audio frequency, it is possible to increase call privacy.
In above-mentioned communication means, above-mentioned control signal could be for carrying out from above-mentioned transmission for above-mentioned reception device
The DCS signal individually received of the above-mentioned audio signal that device sends or for carrying out compulsory exercise for above-mentioned reception device
Actuating signal.
Invention effect
The present invention can provide the communication system having the effect that: can be in wide band system (system of high tone quality)
Reduce the audio level from the leakage audio frequency receiving device output, thus call privacy can be improved.
Accompanying drawing explanation
Fig. 1 is the block diagram of the composition of the dispensing device (microphone device) representing embodiments of the present invention.
Fig. 2 is the block diagram of the composition of the reception device (speaker unit) representing embodiments of the present invention.
Fig. 3 is the explanatory diagram of the action of the dispensing device (microphone device) of embodiments of the present invention.
Fig. 4 is the explanatory diagram of the action of the reception device (speaker unit) of embodiments of the present invention.
Detailed description of the invention
Hereinafter, utilize accompanying drawing so that the communication system of embodiments of the present invention to be described.In the present embodiment, illustration is
Situation for the communication system of wireless microphone system etc..The communication system of present embodiment is by having the merit as dispensing device
The microphone device of energy is constituted with the speaker unit of the function having as reception device.In this communication system, receive and dispatch wideband
The audio signal of band (audio band of 100Hz～15kHz).It addition, in the following description, to believe as wide band audio frequency
Illustrate in case of number (100Hz～15kHz), even in not having in the situation (～15kHz) of lower limit too can
Enough enforcement.
First, the composition of the communication system of embodiments of the present invention is described with reference to Fig. 1 and Fig. 2.Fig. 1 is to represent this
The block diagram of the composition of the dispensing device (microphone device) of the communication system of embodiment.As it is shown in figure 1, microphone device 1 possesses: defeated
Enter the microphone 2 of audio signal；The AF amplifier 3 that the audio signal inputted is amplified；Reduce what audio signal was comprised
The band filter (BPF) 4 of noise tune rate composition；The process (balanced modulation process) carrying out making the frequency of audio signal invert
Balanced modulator 5；Reduce the high frequency content of the modulating clock pulse frequency in processing than balanced modulation and take out audio signal
Frequency reversion composition low pass filter (LPF) 6；Reduce than regulation reference frequency (the most about 3kHz, preferably
2.8kHz～3.2kHz) high pass filter (HPF) 7 of low frequency content；Audio signal is carried out the FM manipulator of FM modulation
8；And amplify the RF amplifier 10 of the audio signal sent from antenna 9.Here, microphone 2 is equivalent to the audio frequency input of the present invention
Portion, balanced modulator 5 is equivalent to the audio signal frequency inversion portion of the present invention.It addition, HPF7 is equivalent to the transmission dress of the present invention
The first filtering part put, antenna 9 is equivalent to the sending part of the present invention.
It addition, microphone device 1 possesses: make the tone signal of the tone signal sent together with audio signal vibration vibrate
Device 11；Generate the DCS signal or the signal generating unit 12 of actuating signal sent together with audio signal.It addition, microphone dress
Put 1 to possess: carry out the CPU13 of the control of signal generating unit；Carried out operating to carry out compulsory exercise (volume adjustment etc.) by user
Operating portion 14.The tone signal generated is overlapped in the audio signal after balanced modulation by tone signal agitator 11.Separately
Outward, the audio frequency letter after the DCS signal generated or actuating signal (control signal) are overlapped balanced modulation by signal generating unit 12
On number (being reduced the audio signal after the signal of the frequency band lower than reference frequency by HPF7).Here, signal generating unit 12
Be equivalent to the signal overlap portion of the present invention.
DCS signal is for carrying out the signal individually received based on digital coding noise elimination (DCS).DCS signal is by quilt
The signal generating unit 12 that CPU13 controls generates, and is superimposed over the audio signal after balanced modulation and (is reduced than benchmark frequency by HPF7
Audio signal after the signal of the frequency band that rate is low) above and send to speaker unit 15.In speaker unit 15, based on
This DCS signal, it is possible to carry out the independent reception of the audio signal sent from microphone device 1.The frequency of DCS signal is configured to ratio
The frequency (such as 254Hz) that the reference frequency of HPF7 is low.
It addition, actuating signal is for carrying out the compulsory exercise (the volume adjustment of speaker or the words that are indicated by microphone device 1
Cylinder battery allowance show) signal.Actuating signal is by by have received from operating portion 14 (or battery allowance test section
(not shown) etc.) the CPU13 of input signal generating unit 12 is controlled and generates, be superimposed over the audio frequency after balanced modulation
On signal (being reduced the audio signal after the signal of the frequency band lower than reference frequency by HPF7) and to speaker unit 15
Send.In speaker unit 15, based on this actuating signal, it is possible to carry out regulation according to the signal sent from microphone device 1 dynamic
Make.The frequency of actuating signal is configured to the low frequency of the reference frequency than HPF7 (such as 254Hz).
Fig. 2 is the block diagram of the composition of the reception device (speaker unit 15) in the communication system representing present embodiment.
As in figure 2 it is shown, speaker unit 15 possesses: amplify the RF amplifier 17 of the audio signal received by antenna 16；To receiving
Audio signal carry out the FM demodulator 18 of FM demodulation；Reduce the frequency content lower than the reference frequency (such as 3kHz) of regulation
High pass filter (HPF) 19；Reduce the low pass filtered of the high frequency content of the modulating clock pulse frequency in processing than balanced modulation
Ripple device (LPF) 20；Carry out the balanced modulator 21 of the process (balanced modulation process) making the frequency of audio signal invert；Reduce ratio
Balanced modulation process in the high frequency content of modulating clock pulse frequency and take out the frequency of audio signal and again invert composition
Low pass filter (LPF) 30；Amplify the AF amplifier 22 of audio signal；Switch over the output/non-output of audio signal
The squelch control portion 23 of noise elimination opening and closing；Control the volume control section 24 of audio signal volume；The speaker 25 of output audio signal.
Here, antenna 16 is equivalent to the acceptance division of the present invention, HPF19 is equivalent to second filtering part receiving device of the present invention.It addition,
Speaker 25 is equivalent to the audio output part of the present invention.
It addition, be balanced modulation treatment by the balanced modulator 21 of this speaker unit 15, frequency is made to be inverted
The frequency of audio signal (having been inverted the audio signal of frequency by the balanced modulator 5 of microphone device 1) inverts again.Therefore, by
The balanced modulation that the balanced modulator 21 of speaker unit 15 is carried out processes the most inverse balanced modulation and processes.This speaker fills
Put the balanced modulator 21 of 15 and be equivalent to the audio signal frequency inversion portion again of the present invention.
It addition, speaker unit 15 possesses: making an uproar of the noise noise elimination of the noise (noise) during for carrying out shielding no signal
Sound noise elimination portion 26；DCS signal or the signal extraction portion 27 of actuating signal is extracted from the audio signal having carried out FM demodulation；Send institute
The DCS signal extracted or the CPU28 of actuating signal.And, this speaker unit 15 possesses the battery for showing microphone device 1
The display part 29 of surplus etc..
The DCS signal extracted by signal extraction portion 27 is sent to squelch control portion 23 from CPU28, is used for carrying out based on number
Independent reception according to coding noise elimination.That is, squelch control portion 23 is when extracting DCS signal from audio signal, opens noise elimination and exports
The occasion carrying out audio signal output (is referred to as noise elimination closedown (OFF) or noise elimination is opened, will not carry out audio frequency letter by audio signal
The situation referred to as noise elimination of number output is opened (ON) or noise elimination and is closed).On the other hand, squelch control portion 23 is not from audio signal
When extracting DCS signal, close noise elimination and do not export audio signal.In this case, CPU28, squelch control portion 23 are equivalent to this
The process portion of invention.
It addition, the actuating signal extracted by signal extraction portion 27 is used for carrying out various action in speaker unit 15.
Such as, it is sent to volume control section 24 for adjusting the actuating signal of volume from CPU28, for carrying out the control of volume adjustment
System.It addition, for showing that the actuating signal of battery allowance is sent to display part 29 from CPU28, for carrying out microphone device 1
The display of battery allowance.Adjust or battery allowance it addition, the various actions carried out in speaker unit 15 are not limited to volume
Display, such as, can also be contact output etc..In this case, CPU28, volume control section 24 are equivalent to the process of the present invention
Portion.
For communication system 1 as constructed as above, referring to the drawings its action is illustrated.
Fig. 3 is the explanatory diagram of the action of the microphone device 1 of present embodiment.As it is shown on figure 3, at the microphone of present embodiment
In device 1, when the wide band audio signal comprising main audio frequency band (300Hz～3kHz) is inputted from microphone 2 (with reference to figure
3 (a)), the balanced modulation carrying out making the frequency of this audio signal invert processes (with reference to Fig. 3 (b)).Audio frequency after balanced modulation
The part (part of audio band) of the lower frequency side of signal comprises leakage audio frequency sometimes, but in the present embodiment, this low frequency
The part of side (comprising the part of leakage audio frequency) is reduced (with reference to Fig. 3 (c)) by HPF19, replace, sending overlap DCS letter
Number or actuating signal audio signal (with reference to Fig. 3 (d)).
Fig. 4 is the explanatory diagram of the action of the speaker unit 15 of present embodiment.As shown in Figure 4, in present embodiment
In speaker unit 15, when receiving from the audio signal that microphone device 1 sends (with reference to Fig. 4 (a)), signal extraction portion 27 extracts
DCS signal, actuating signal and tone signal (overlapping in the frequency band higher than audio band).Then, this audio signal
The part (overlapping DCS signal or the part of actuating signal) of lower frequency side be lowered (with reference to Fig. 4 (b)), then, carry out making sound
Frequently the balanced modulation of the frequency reversion (reversion again) of signal processes (inverse balanced modulation processes) (with reference to Fig. 4 (c)), from speaker
25 are output as audio frequency.
According to the communication system of such present embodiment, in wide band system (system of high tone quality), it is possible to fall
The audio level of the low leakage audio frequency from speaker unit 15 output, it is possible to increase call privacy.
I.e., in the present embodiment, in microphone device 1, at the balanced modulation carrying out making the frequency of audio signal invert
Reason, after balanced modulation on the frequency band (frequency band lower than reference frequency) of the lower frequency side of the audio signal of (frequency reversion after)
Overlapping DCS signal or actuating signal.Therefore, even if as " letting out in the audio signal after balanced modulation (after frequency reversion)
Leakage audio frequency " and before comprising balanced modulation in the case of audio signal (before frequency reversion), its frequency band (frequency of lower frequency side
Band) signal also shielded acoustically by DCS signal or actuating signal, it is possible to make from general speaker unit 15 (this
Speaker unit 15 beyond invention) the leakage audio frequency that exports is difficult to be heard.On the other hand, at the speaker of present embodiment
In device 15, reduce the signal of its frequency band (frequency band of lower frequency side), carry out making the frequency of audio signal again invert
Inverse balanced modulation processes, suitably the audio signal of (after frequency inverts again) after the inverse balanced modulation of output.So, wide band
In system (system of high tone quality), it is possible to shielding leakage audio frequency, it is possible to increase call privacy.
It addition, in the present embodiment, after balanced modulation in the audio signal of (frequency reversion after), lower frequency side is reduced
The signal of frequency band, it is ensured that for overlapping DCS signal or the frequency band of actuating signal.Therefore, DCS signal or action are being believed
When number overlapping in audio signal, it is possible to increase the signal to noise ratio (S/N) of DCS signal or actuating signal.
It addition, in the present embodiment, it is possible to based on DCS signal, speaker unit 15 it is made whether that output is from microphone
The switching (squelch control) of the audio signal that device 1 receives.Or, it is possible to based on actuating signal, enter speaker unit 15
Compulsory exercise (volume adjusts or battery allowance shows) indicated by jargon cartridge 1.
Above by having illustrated embodiments of the present invention, but the scope of the present invention is not limited to this, wants in right
Can carry out changing/deforming according to purpose in seeking the scope described in book.
Industrial applicibility
As previously discussed, communication system involved in the present invention has energy in wide band system (system of high tone quality)
Reduce from the audio level of the leakage audio frequency receiving device output it is thus possible to improve the effect of call privacy, as wireless microphone
Systems etc. are useful.
Claims (9)
1. a communication system, this communication system possesses: for sending sending out of the audio signal of the assigned frequency frequency band being transfused to
Send device；With the reception device of the above-mentioned audio signal that reception sends from this dispensing device, here, described assigned frequency frequency band is
Comprise the frequency band higher than the reference frequency of regulation and the broadband of the frequency band lower than described stipulated standard frequency, described
Reference frequency is any one frequency in 2.8kHz～3.2kHz, and described assigned frequency frequency band is the frequency band of below 15kHz,
It is characterized in that,
Above-mentioned dispensing device possesses:
The audio frequency input unit of the audio signal of input said frequencies frequency band；
Make the audio signal frequency inversion portion of the height reversion of the frequency of above-mentioned audio signal；
Reduce by this audio signal frequency inversion portion make said frequencies reversion after audio signal in lower than said reference frequency
First filtering part of audio signal of frequency band of narrow-band；
After being reduced by this first filtering part, in the frequency band of the narrow-band lower than said reference frequency overlapping with on
State the control letter that the action control of the Control on Communication between dispensing device and above-mentioned reception device or above-mentioned dispensing device is relevant
Number signal overlap portion；With
The sending part of the audio signal of the above-mentioned control signal of sending overlap；
Above-mentioned reception device possesses:
Receive the acceptance division of the audio signal sent from above-mentioned dispensing device；
The signal extraction portion of above-mentioned control signal is extracted from the audio signal received by this acceptance division；
Reduce the frequency band of the narrow-band lower than said reference frequency in the above-mentioned audio signal received signal
Two filtering part；
Carry out the converse turn of process making the height of the frequency of the audio signal after being reduced again invert by this second filtering part
Audio signal frequency inversion portion again；With
Export the audio output part of the audio signal after said frequencies is again reversed.
2. communication system as claimed in claim 1, wherein, it is characterised in that above-mentioned control signal is for for above-mentioned reception device
Carry out the digital coding purified signal individually received of above-mentioned audio signal that sends from above-mentioned dispensing device or for for
State reception device and carry out the actuating signal of compulsory exercise.
3. the communication system as described in claim 2, it is characterised in that above-mentioned reception device possesses:
Above-mentioned digital coding purified signal or the extraction unit of above-mentioned actuating signal is extracted from the above-mentioned audio signal received；With
It is made whether to export the above-mentioned audio signal that receives from above-mentioned dispensing device based on above-mentioned digital coding purified signal
Switch or carry out based on above-mentioned actuating signal the process portion of above-mentioned compulsory exercise.
4. a dispensing device, this dispensing device is the dispensing device in communication system, and this communication system possesses for sending quilt
The above-mentioned audio signal that the dispensing device of the audio signal of the assigned frequency frequency band of input and reception send from this dispensing device
Receiving device, here, described assigned frequency frequency band is to comprise the frequency band higher than the reference frequency of regulation and than described regulation
The broadband of the frequency band that reference frequency is low, described reference frequency is any one frequency in 2.8kHz～3.2kHz, described
Assigned frequency frequency band is the frequency band of below 15kHz, in the above-mentioned reception device, sends from above-mentioned dispensing device when receiving
During audio signal, after the control signal being extracted regulation, reduce the above-mentioned base of ratio in above-mentioned received audio signal
The signal of the frequency band of the narrow-band that quasi-frequency is low, carries out the frequency frequency making to reduce the narrow-band lower than said reference frequency
The converse turn of process that the frequency of audio signal after the signal of band inverts again, and the height exporting said frequencies is again reversed
After audio signal, above-mentioned dispensing device is characterised by,
Above-mentioned dispensing device possesses:
The audio frequency input unit of the audio signal of input said frequencies frequency band；
Make the audio signal inversion portion of the height reversion of the frequency of above-mentioned audio signal；
Reduce by this audio signal frequency inversion portion make said frequencies reversion after audio signal in lower than said reference frequency
First filtering part of audio signal of frequency band of narrow-band；
The overlapping frequency band as the narrow-band lower than said reference frequency after being reduced by this first filtering part
Control on Communication or the action control of above-mentioned dispensing device between signal and above-mentioned dispensing device and above-mentioned reception device have
The signal overlap portion of the control signal closed；With
The sending part of the audio signal of the above-mentioned control signal of sending overlap.
5. the dispensing device as described in claim 4, it is characterised in that above-mentioned control signal is for for above-mentioned reception device
Carry out the digital coding purified signal individually received of above-mentioned audio signal that sends from above-mentioned dispensing device or for for
State reception device and carry out the actuating signal of compulsory exercise.
6. receiving a device, this reception device is the reception device in communication system, and this communication system possesses for sending quilt
The above-mentioned audio signal that the dispensing device of the audio signal of the assigned frequency frequency band of input and reception send from this dispensing device
Receiving device, here, described assigned frequency frequency band is to comprise the frequency band higher than the reference frequency of regulation and than described regulation
The broadband of the frequency band that reference frequency is low, described reference frequency is any one frequency in 2.8kHz～3.2kHz, described
Assigned frequency frequency band is the frequency band of below 15kHz, in the dispensing device of above-mentioned communication system, when input said frequencies frequency
During the audio signal carried, the audio signal frequency reversion carrying out making the height of the frequency of above-mentioned audio signal invert processes, upper
State the overlapping frequency band as the narrow-band lower than said reference frequency in the audio signal after the height of frequency is inverted
Control on Communication or the action control of above-mentioned dispensing device between signal and above-mentioned dispensing device and above-mentioned reception device have
The control signal closed, the sending overlap audio signal of above-mentioned control signal, above-mentioned reception device is characterised by,
This reception device possesses:
Receive the acceptance division of the audio signal sent from above-mentioned dispensing device；
Reduce the signal of the frequency band of the narrow-band lower than said reference frequency in above-mentioned received audio signal
Filtering part；
The frequency carrying out making reducing the audio signal after the signal of the frequency band of the narrow-band lower than said reference frequency
The audio signal inversion portion again of the converse turn of process that height inverts again；With
Export the audio output part of the audio signal after said frequencies is again reversed.
7. the reception device as described in claim 6, it is characterised in that above-mentioned control signal is for for above-mentioned reception device
Carry out the digital coding purified signal individually received of above-mentioned audio signal that sends from above-mentioned dispensing device or for for
State reception device and carry out the actuating signal of compulsory exercise.
8. a communication means, this communication means is used in communication system, this communication system possess for send be transfused to
The dispensing device of audio signal of assigned frequency frequency band and receive the reception of above-mentioned audio signal sent from this dispensing device
Device, here, described assigned frequency frequency band is to comprise the frequency band higher than the reference frequency of regulation and than described stipulated standard
The broadband of the frequency band that frequency is low, described reference frequency is any one frequency in 2.8kHz～3.2kHz, described regulation
Frequency band is the frequency band of below 15kHz, it is characterised in that this communication means comprises the following steps:
Utilize above-mentioned dispensing device, when input audio signal, make the height reversion of the frequency of the above-mentioned audio signal inputted；
In audio signal after said frequencies is inverted, the overlapping frequency band as the narrow-band lower than said reference frequency
The action control with the Control on Communication between above-mentioned dispensing device and above-mentioned reception device or above-mentioned dispensing device relevant
Control signal；
The sending overlap audio signal of above-mentioned control signal；
Utilize above-mentioned reception device, when receiving from the audio signal that above-mentioned dispensing device sends, extract the control signal of regulation；
Reduce the signal of the frequency band of the narrow-band lower than said reference frequency in the above-mentioned audio signal received；
The height reducing the frequency of the audio signal after the signal of the frequency band lower than said reference frequency is made again to invert；
And
Export the audio signal after said frequencies is again reversed.
9. the communication means as described in claim 8, it is characterised in that above-mentioned control signal is for for above-mentioned reception device
Carry out the digital coding purified signal individually received of above-mentioned audio signal that sends from above-mentioned dispensing device or for for
State reception device and carry out the actuating signal of compulsory exercise.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-095794 | 2011-04-22 | ||
| JP2011095794A JP5269940B2 (en) | 2011-04-22 | 2011-04-22 | COMMUNICATION SYSTEM, TRANSMISSION DEVICE, RECEPTION DEVICE, AND COMMUNICATION METHOD |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102752068A CN102752068A (en) | 2012-10-24 |
| CN102752068B true CN102752068B (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210046579.6A Expired - Fee Related CN102752068B (en) | 2011-04-22 | 2012-02-27 | Communication system, dispensing device, reception device and communication means |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5269940B2 (en) |
| CN (1) | CN102752068B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635493A (en) * | 2015-09-28 | 2016-06-01 | 宇龙计算机通信科技(深圳)有限公司 | Voice shielding method, voice shielding device and terminal |
| CN106328153B (en) * | 2016-08-24 | 2020-05-08 | 青岛歌尔声学科技有限公司 | Electronic communication equipment voice signal processing system and method and electronic communication equipment |
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| FR2530101A1 (en) * | 1982-07-06 | 1984-01-13 | Thomson Brandt | Process and system for encrypted transmission of a signal, especially of audio frequency |
| JPH0237852A (en) * | 1988-07-27 | 1990-02-07 | Nec Corp | Voice secret call device |
| JPH02162932A (en) * | 1988-12-16 | 1990-06-22 | Sony Corp | Transmitter-receiver |
| CN1143287A (en) * | 1994-05-03 | 1997-02-19 | 摩托罗拉公司 | Frequency inverted scrambler containing integrated high-pass filter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04150427A (en) * | 1990-10-12 | 1992-05-22 | Sony Corp | Privacy telephone device for radio communication equipment |
| JPH08274753A (en) * | 1995-04-03 | 1996-10-18 | Sony Corp | Secret talk method, and transmitter and receiver |
| JP4617276B2 (en) * | 2006-06-14 | 2011-01-19 | 株式会社日立国際電気 | Transmitter |
| JP2009246430A (en) * | 2008-03-28 | 2009-10-22 | Kenwood Corp | Radio communication device and method of processing radio communication device |
| JP5331091B2 (en) * | 2010-11-18 | 2013-10-30 | パナソニック株式会社 | COMMUNICATION SYSTEM, TRANSMISSION DEVICE, RECEPTION DEVICE, AND COMMUNICATION METHOD |
| JP5350351B2 (en) * | 2010-11-18 | 2013-11-27 | パナソニック株式会社 | COMMUNICATION SYSTEM, TRANSMISSION DEVICE, RECEPTION DEVICE, AND COMMUNICATION METHOD |
-
2011
- 2011-04-22 JP JP2011095794A patent/JP5269940B2/en not_active Expired - Fee Related
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2012
- 2012-02-27 CN CN201210046579.6A patent/CN102752068B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2530101A1 (en) * | 1982-07-06 | 1984-01-13 | Thomson Brandt | Process and system for encrypted transmission of a signal, especially of audio frequency |
| JPH0237852A (en) * | 1988-07-27 | 1990-02-07 | Nec Corp | Voice secret call device |
| JPH02162932A (en) * | 1988-12-16 | 1990-06-22 | Sony Corp | Transmitter-receiver |
| CN1143287A (en) * | 1994-05-03 | 1997-02-19 | 摩托罗拉公司 | Frequency inverted scrambler containing integrated high-pass filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102752068A (en) | 2012-10-24 |
| JP2012227856A (en) | 2012-11-15 |
| JP5269940B2 (en) | 2013-08-21 |
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