CN112870523A - Music therapy system based on multichannel bone conduction stimulation - Google Patents
Music therapy system based on multichannel bone conduction stimulation Download PDFInfo
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- CN112870523A CN112870523A CN202110071431.7A CN202110071431A CN112870523A CN 112870523 A CN112870523 A CN 112870523A CN 202110071431 A CN202110071431 A CN 202110071431A CN 112870523 A CN112870523 A CN 112870523A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
- A61M2021/0005—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus
- A61M2021/0027—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus by the hearing sense
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Abstract
The invention provides a music therapy system based on multichannel bone conduction stimulation, which comprises a judger Gate for inputting a binaural signal or a multichannel signal, a low-pass filter C1filter, a high-pass filter C2filter and a specified filter, wherein the judger Gate is used for outputting a binaural signal or a multichannel signal; when the two-channel signal is input to the decision device Gate, the device also comprises an upmix module upmixer, a two-channel earphone playing device, a delayer Z-x and a single-channel bone conduction playing device; when inputting multi-channel signals to the judger Gate, the system also comprises a down-mixing module down mixer, a delayer Z-x, a dual-channel earphone playing device and a single-channel bone conduction playing device. The music therapy system realizes the purpose of outputting multi-channel bone conduction signals, thereby being capable of simultaneously carrying out stimulation therapy aiming at a plurality of parts of the head and being suitable for treating mental diseases such as depression and autism.
Description
Technical Field
The invention relates to the technical field of trusted computing, in particular to a music therapy system based on multichannel bone conduction stimulation.
Background
The existing music therapy is mainly Tomatosis therapy, random low-pass-high-pass output signals are obtained by sending signals into a low-pass filter and a high-pass filter which are switched, and the aim of treating mental diseases such as depression and autism is achieved through a dual-channel air conduction path of an earphone and a single-channel bone conduction path through bone conduction.
Fig. 1 is a signal processing diagram of thomas therapy, which is implemented as shown in fig. 1.
Wherein the content of the first and second substances,
IN is an input dual-channel signal;
the Gate is a decision device which determines that the current time passes through a C1filter (low pass) or a C2filter (high pass), and can be switched according to the signal amplitude or the conversion probability of self-defined random switching;
c1 is a low pass filter;
c2 is a high pass filter;
HP is a high-pass filter;
the Amplifier is a signal Amplifier;
OUT is an output signal;
z-x is a retarder.
In the thomas therapy, the input binaural signals are filtered by selecting the C1 and C2 filters in real time, and the signals are output to the binaural earphone and the monaural bone conduction.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a music therapy system based on multichannel bone conduction stimulation.
The invention is realized by the following technical scheme:
the invention provides a music therapy system based on multichannel bone conduction stimulation, which comprises a judger Gate for inputting a binaural signal or a multichannel signal, a low-pass filter C1filter and a high-pass filter C2filter which are respectively connected with the judger Gate, and a specified filter which is connected with both the low-pass filter C1filter and the high-pass filter C2 filter;
when the two-channel signal is input to the decision device Gate, the system also comprises an upmix module upmixer and a two-channel earphone playing device which are respectively connected with the specified filter, a plurality of delayers Z-x which are respectively connected with the upmix module upmixer, and a single-channel bone conduction playing device which is connected with each delayer Z-x;
when inputting multi-channel signals to the judger Gate, the system also comprises a down-mixing module and a plurality of delayers Z-x which are respectively connected with the appointed filter, a dual-channel earphone playing device connected with the down-mixing module down-mixing, and a single-channel bone conduction playing device connected with each delayer Z-x.
Preferably, the designated filter is an HPFilter high-pass filter.
Preferably, the specified filter is an FIR filter.
Preferably, when a binaural signal is input to the decision Gate, the left and right channels of the binaural headphone playing device and the specified filter, and the delay device Z-x and the connected single-channel bone conduction playing device are connected through a signal Amplifier.
Preferably, when a multi-channel signal is input to the decision Gate, the left and right channels of the binaural headphone player device and the downmix module, and the delay devices Z-x and the connected single-channel bone conduction player device are connected by a signal Amplifier.
The invention has the beneficial effects that: the music therapy system can output multi-channel bone conduction signals, thereby being capable of simultaneously carrying out stimulation therapy aiming at a plurality of parts of the head and being suitable for treating mental diseases such as depression and autism.
Drawings
Fig. 1 is a thomas therapy signal processing diagram;
fig. 2 is a signal processing diagram of a multichannel bone conduction stimulation-based music therapy system according to an embodiment of the present invention when a binaural signal is input;
fig. 3 is a signal processing diagram of a multichannel bone conduction stimulation-based music therapy system according to an embodiment of the present invention when inputting multichannel signals;
FIG. 4 is a Gilbert channel model diagram.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The following describes a music therapy system based on multichannel bone conduction stimulation according to an embodiment of the present application with reference to the drawings.
First, referring to fig. 2 and fig. 3 together, fig. 2 is a signal processing diagram when a binaural signal is input to the music therapy system based on multi-channel bone conduction stimulation according to the embodiment of the present invention, and fig. 3 is a signal processing diagram when a multichannel signal is input to the music therapy system based on multi-channel bone conduction stimulation according to the embodiment of the present invention.
As can be seen from fig. 2 and 3, the music therapy system based on multichannel bone conduction stimulation provided by the present invention includes an arbiter Gate for inputting a binaural signal or a multichannel signal, a low-pass filter C1filter and a high-pass filter C2filter respectively connected to the arbiter Gate, and a designated filter connected to both the low-pass filter C1filter and the high-pass filter C2 filter.
As shown in fig. 2, when a binaural signal is input to the decision Gate, the apparatus further includes an upmix module upmixer and a binaural headphone player, which are respectively connected to the specified filters, a plurality of delays Z-x, which are respectively connected to the upmix module upmixer, and a single-channel bone conduction player, which is connected to each of the delays Z-x.
In one embodiment, a binaural signal s is input to the decision Gaten(t), n is 1, 2, the decision device Gate randomly decides the two-channel signal to pass through the low pass filter C1filter or the high pass filter C2filter according to the time variation. The designated filter is an HPFilter high-pass filter, and of course, the designated filter may also be an FIR filter.
Specifically, the Gate changes with time and is determined to pass through the low-pass filter C1filter or the high-pass filter C2filter, in one implementation, as shown in fig. 4, a second-order markov chain may be used to determine to pass the signal through the low-pass filter C1filter or the high-pass filter C2filter at the next time through random p and q probabilities, and at the time of initialization, an initial state is randomly determined according to the values of p0 and q0 (p0+ q0 ═ 1), or the initial state is directly designated as using the low-pass filter C1filter, and then random numbers are continuously generated, and in the case of using the low-pass filter C1filter at the current state, whether to continue using the low-pass filter C1filter (p0, 0) at the next time or to switch to the high-pass filter C2filter (p0, 1) is determined according to the values of p and q. Of course, the initial state may be directly specified as using the high-pass filter C2filter, and the case of directly specifying the initial state as using the high-pass filter C2filter may be the same as the case of directly specifying the initial state as using the low-pass filter C1 filter.
According to the decision of the decision device Gate, the two-channel signal passing through the low-pass filter C1filter or the high-pass filter C2filter is filtered by the appointed filter to obtain a filtered signal sfilter(t)。
When the designated filter is an HPFilter high pass filter,
said filtered signal sfilterThe expression of (t) is:
wherein a and b are filter coefficients.
When the specified filter is a FIR filter,
the term is 0.
Further, the signal s is filteredfilter(t) on the one hand, outputting through the left and right sound channels of the dual-channel earphone playing device, namely conducting air; on the other hand, a multi-channel upmixer signal is obtained through the upmixer module upmixer.
According to said filtered signal sfilter(t) the headphone left and right channel outputs are:
s1 headphone(t)＝s1 filter(t)gheadphone
s2 hsadphone(t)＝s2 filtre(t)·gheadphone；
wherein, gheadphoneThe gain value can be adjusted at the earphone end.
Filtered signal sfilter(t) the implementation method for obtaining the multi-path mixing signal through the upmixer module upmixer comprises the following steps:
calculating covariance matrix covariancemastix of the left channel and the right channel of the binaural signal, wherein the covariance matrix covariancemastix is defined as A and has the expression:
by calculating COVARIANCE matrices of left and right channels of the binaural signal, a multi-channel upmix signal may be generated, which specifically includes the following five upmix signals:
[sleft 5(t)，sright 5(t)，scenter 5(t)，srearleft 5(t)，srearright 5(t)]；
sleft 5(t)＝sleft(t)；
sright 5(t)＝sright(t)；
scenter 5(t)＝cleft(t)sleft(t)+cright(t)sright(t)；
srearleft 5(t)＝crearleft(t)sleft(t)；
srearright 5(t)＝crearright(t)sright(t)；
wherein, [ c ]left，cright]And [ c)rearleft，crearright]Respectively corresponding to COVARIANCE MATRIX: the feature vectors of the large and small feature values of the two feature vectors of a.
And finally, the multi-path upmixed signals pass through a plurality of delayers Z-x respectively, and finally the signals are output as delayed and gained signals through the single-channel bone conduction playing equipment, namely the bone conduction.
The final output signal is a delayed and gained signal:
sn bone(t)＝sn 5(t)·gbone；
wherein, gboneThe gain value is adjustable for the bone conduction segment.
With continued reference to fig. 2, when a binaural signal is input to the decision Gate, the left and right channels of the binaural headphone playback device and the specified filter, and each delay Z-x and the connected single-channel bone conduction playback device, are connected through the signal Amplifier.
In the above-described embodiment, the signal s is filteredfilterAnd (t) amplifying and outputting the signals by a signal Amplifier when the left and right sound channels of the earphone are output and the multi-channel mixed signals pass through a delayer Z-x respectively and are output by the single-channel bone conduction playing equipment.
It is obvious from the above description that the original binaural signal is converted into the upmixed signal by an upmixing module in the bone conduction signal portion, and the upmixed signal is played by at least two single-channel bone conduction playing devices, so as to add new spatial audio dimension on the basis of the original single-channel bone conduction path, for example, the left and right sides of the head can sense different directional sound source stimuli by wearing two bone conduction microphones.
In the above embodiment, the number of bone conduction audio channels is not limited, and the upmixer module upmixer may calculate an appropriate upmix signal according to the specified number of channels and the position of wearing on the head.
As shown in fig. 3, when inputting a multi-channel signal to the decision Gate, the system further includes a downmix module downmixer and a plurality of delays Z-x connected to the specified filters, respectively, a binaural headphone playback device connected to the downmix module downmixer, and a single-channel bone conduction playback device connected to each delay Z-x.
When multi-channel signals are input to the decision device Gate, the left and right channels of the dual-channel headphone playing device are connected with the downmixing module, and each delayer Z-x is connected with the connected single-channel bone conduction playing device through a signal Amplifier Amplifier.
In another embodiment, a multi-channel signal is input to the decision device Gate, the decision device Gate randomly determines the multi-channel signal to pass through the low-pass filter C1filter or the high-pass filter C2filter according to the time variation, and the multi-channel signal passing through the low-pass filter C1filter or the high-pass filter C2filter is filtered through the specified filter according to the decision of the decision device Gate to obtain the filtered signal sfilter(t) of (d). It should be noted here that the specified filter is an HPFilter high-pass filter.
The resulting filtered signal sfilter(t) on one hand, outputting a signal which is a delayed and gained signal through a single-channel bone conduction playing device through a delayer Z-x, namely, the bone conduction; and on the other hand, the multichannel signals are converted into the two-channel signals through a down-mixing module down mixer of the multichannel signal-to-two-channel signals, and then the two-channel signals are output through the left and right channels of the dual-channel earphone playing equipment, namely air conduction.
The down-mixing module down mixer converts the signals to obtain two-channel signals, and the two-channel signals are output through the left and right sound channels of the earphone, wherein the two-channel signals are respectively as follows:
sleft(t)＝sleft 5(t)+scenter 5(t)·0.707+srearleft 5(t)·0.707；
sright(t)＝sright 5(t)+scenter 5(t)·0.707+srearright 5(t)·0.707。
in the above another embodiment, the difference from the first embodiment proposed in the present invention is that the input signal directly to the decision Gate can support the format of the original multi-channel signal, the multi-channel signal is filtered and then finally output as a delayed and gained signal through the delay Z-x, since the input signal is in the format of the multi-channel signal, the multi-channel bone conduction signal can be output, and on the other hand, the down-mixing module is used at the output end of the headphone to convert the multi-channel signal into the binaural signal and then output.
As apparent from the above description, the music therapy system can output multiple bone conduction signals, thereby performing stimulation therapy on multiple parts of the head at the same time, and being suitable for treating mental diseases such as depression and autism.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.
Claims (5)
1. A system for music therapy based on multichannel bone conduction stimulation, comprising: the device comprises a decision device Gate used for inputting a two-channel signal or a multi-channel signal, a low-pass filter C1filter and a high-pass filter C2filter which are respectively connected with the decision device Gate, and a specified filter which is connected with the low-pass filter C1filter and the high-pass filter C2 filter;
when the two-channel signal is input to the decision device Gate, the system also comprises an upmix module upmixer and a two-channel earphone playing device which are respectively connected with the specified filter, a plurality of delayers Z-x which are respectively connected with the upmix module upmixer, and a single-channel bone conduction playing device which is connected with each delayer Z-x;
when inputting multi-channel signals to the judger Gate, the system also comprises a down-mixing module and a plurality of delayers Z-x which are respectively connected with the appointed filter, a dual-channel earphone playing device connected with the down-mixing module down-mixing, and a single-channel bone conduction playing device connected with each delayer Z-x.
2. The multichannel bone conduction stimulation based music therapy system according to claim 1, wherein the specified filter is an HPFilter high pass filter.
3. The multichannel bone conduction stimulation-based music therapy system according to claim 1, wherein the specified filter is an FIR filter.
4. The multichannel bone conduction stimulation-based music therapy system according to claim 1, wherein when a binaural signal is input to the decision Gate, the left and right channels of the binaural headphone player device and the specified filter, and the delay device Z-x and the connected single-channel bone conduction player device are connected through a signal Amplifier.
5. The system for performing music therapy based on multichannel bone conduction stimulation according to claim 1, wherein when multichannel signals are inputted to the decision Gate, the left and right channels of the binaural rendering device and the downmix module, and the Z-x of each delay device and the connected single-channel bone conduction rendering device are connected through a signal Amplifier.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4327252A (en) * | 1980-02-08 | 1982-04-27 | Tomatis Alfred A A A | Apparatus for conditioning hearing |
| US20130225915A1 (en) * | 2009-06-19 | 2013-08-29 | Randall Redfield | Bone Conduction Apparatus and Multi-Sensory Brain Integration Method |
| CN205510354U (en) * | 2016-04-08 | 2016-08-24 | 任荟锜 | Head -mounted bone conduction earphone |
| CN106105255A (en) * | 2014-03-19 | 2016-11-09 | 索尼公司 | Acoustic output device |
| KR20180067060A (en) * | 2016-12-12 | 2018-06-20 | 경태현 | Music Therapy |
| CN109729471A (en) * | 2017-10-27 | 2019-05-07 | 北京金锐德路科技有限公司 | The ANC denoising device of formula interactive voice earphone is worn for neck |
| WO2020077663A1 (en) * | 2018-10-15 | 2020-04-23 | 易力声科技(深圳)有限公司 | Earphones used for music therapy for autism spectrum disorder |
| WO2020128627A2 (en) * | 2018-12-21 | 2020-06-25 | Cochlear Limited | Therapeutic sound through bone conduction |
-
2021
- 2021-01-19 CN CN202110071431.7A patent/CN112870523A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4327252A (en) * | 1980-02-08 | 1982-04-27 | Tomatis Alfred A A A | Apparatus for conditioning hearing |
| US20130225915A1 (en) * | 2009-06-19 | 2013-08-29 | Randall Redfield | Bone Conduction Apparatus and Multi-Sensory Brain Integration Method |
| CN106105255A (en) * | 2014-03-19 | 2016-11-09 | 索尼公司 | Acoustic output device |
| CN205510354U (en) * | 2016-04-08 | 2016-08-24 | 任荟锜 | Head -mounted bone conduction earphone |
| KR20180067060A (en) * | 2016-12-12 | 2018-06-20 | 경태현 | Music Therapy |
| CN109729471A (en) * | 2017-10-27 | 2019-05-07 | 北京金锐德路科技有限公司 | The ANC denoising device of formula interactive voice earphone is worn for neck |
| WO2020077663A1 (en) * | 2018-10-15 | 2020-04-23 | 易力声科技(深圳)有限公司 | Earphones used for music therapy for autism spectrum disorder |
| WO2020128627A2 (en) * | 2018-12-21 | 2020-06-25 | Cochlear Limited | Therapeutic sound through bone conduction |
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