Earphone with anti-eavesdropping function

Abstract

The invention discloses an earphone with an anti-eavesdropping function, which relates to the technical field of anti-eavesdropping earphones and comprises an active noise reduction algorithm, a time reversal algorithm and MICAUDIO. The active noise reduction algorithm comprises SPKL1 and SPKR1; and the time reversal algorithm comprises SPKL2 and SPKR2. In the invention, the MICAUDIO picks up the speaking sound S1 of a wearer, processes the sound by an active noise reduction algorithm, generates the sound which has the same frequency spectrum as the speaking sound but has time disorder, outputs the sound to the environment through the SPKL1 and the SPKR1, that is, aliasing of the sound S2, the sound S1 and the sound S2 is carried out, and the sound S2 is the disordered and useless sound and can shield the sound of the speaker at the same time, so that the purpose of preventing eavesdropping is achieved. The MICL and the MICR pick up environmental noise SA1, a sound wave SA2 which is the same as the environmental noise in amplitude and opposite to the environmental noise in phase is generated through processing, the sound wave SA2 is output to human ears through the SPKL2 and the SPKR2, the SA1 and the SA2 are added and counteracted, a person wearing the earphone cannot feel the external noise, and therefore the noise reduction function is achieved.

Description

Technical Field

[0001] This invention relates to the field of anti-eavesdropping earphone technology, specifically to an earphone with anti-eavesdropping function. Background Technology

[0002] In the field of noise-canceling headphones, passive noise control and active noise control are currently the two main noise cancellation methods. Active noise-canceling headphones generate sound waves of the same phase as the external noise through the noise cancellation system, thereby neutralizing the noise and achieving the noise cancellation effect. Passive noise-canceling headphones mainly block external noise by surrounding the ears to form a closed space or by using sound-insulating materials such as silicone earplugs.

[0003] However, current noise-canceling headphones cannot achieve the effect of preventing eavesdropping and cannot be used in important meetings to prevent eavesdropping. Therefore, there is an urgent need for headphones with anti-eavesdropping function. Summary of the Invention

[0004] The purpose of this invention is to provide a pair of headphones with anti-eavesdropping function in order to solve the problem that current noise-canceling headphones cannot achieve the effect of preventing eavesdropping and cannot be used in important meetings to prevent eavesdropping.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an earphone with anti-eavesdropping function, characterized in that it includes: an active noise reduction algorithm, a time reversal algorithm, and MIC_AUDIO; Active noise reduction algorithms include: SPK_L1 and SPK_R1; Time reversal algorithms include SPK_L2 and SPK_R2.

[0006] Preferably, the MIC_AUDIO picks up the wearer's voice S1, the active noise reduction algorithm processes the sound to generate a sound with the same spectrum as the spoken sound but with disordered timing, and outputs it to the environment through SPK_L1 and SPK_R1, i.e., S2.

[0007] Preferably, the sound mixing of S1 and S2 will mask the speaker's voice.

[0008] Preferably, SPK_L1 and SPK_L2 are MIC_L, and SPK_R1 and SPK_R2 are MIC_R.

[0009] Preferably, the MIC_L and MIC_R pick up ambient noise SA1, process it, and generate a sound wave SA2 with the same amplitude but opposite phase to the ambient noise, which is then output to the human ear through SPK_L2 and SPK_R2.

[0010] Preferably, S1 and S2 cancel each other out, so the person wearing the headphones cannot perceive external noise.

[0011] Compared with the prior art, the beneficial effects of the present invention are: In this invention, MIC_AUDIO picks up the voice S1 of the wearer speaking, and the active noise reduction algorithm processes this voice to generate a voice with the same spectrum as the speaking voice but with temporal distortion. This voice is then output to the environment through SPK_L1 and SPK_R1, which is S2. The voices S1 and S2 overlap. Since the voice S2 is a chaotic and useless voice, it also masks the speaker's voice, thus achieving the purpose of preventing eavesdropping. MIC_L and MIC_R pick up the ambient noise SA1, and through processing, generate a sound wave SA2 with the same amplitude but opposite phase to the ambient noise. This sound wave is then output to the ear through SPK_L2 and SPK_R2. SA1 and SA2 cancel each other out, so the person wearing the headphones cannot perceive the external noise, thus achieving the noise reduction function. Attached Figure Description

[0012] Figure 1 This is a schematic diagram illustrating the system implementation of the present invention.

[0013] Figure 2 This is a schematic diagram of the processing algorithm of the present invention. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figures 1-2 A type of earphone with anti-eavesdropping function, including: active noise cancellation algorithm, time reversal algorithm, and MIC_AUDIO; Active noise reduction algorithms include: SPK_L1 and SPK_R1; Time reversal algorithms include SPK_L2 and SPK_R2.

[0016] MIC_AUDIO picks up the wearer's voice (S1), processes it using an active noise reduction algorithm, and generates a sound with the same frequency spectrum as the spoken voice but with a distorted time signature. This sound is then output to the environment via SPK_L1 and SPK_R1 (S2). The sound of S1 and S2 overlaps, masking the speaker's voice. SPK_L1 and SPK_L2 are MIC_L, and SPK_R1 and SPK_R2 are MIC_R. MIC_L and MIC_R pick up ambient noise (SA1), process it, and generate a sound wave (SA2) with the same amplitude but opposite phase to the ambient noise. This SA2 is then output to the ear via SPK_L2 and SPK_R2. S1 and S2 cancel each other out, so the wearer cannot perceive external noise. The AUDIO picks up the wearer's voice (S1), processes this voice using an active noise reduction algorithm, and generates a sound with the same frequency spectrum as the voice but with temporal distortion. This sound is then output to the environment via SPK_L1 and SPK_R1 (S2). S1 and S2 are superimposed. Since S2 is a chaotic and useless sound, it also masks the speaker's voice, thus achieving the purpose of preventing eavesdropping. MIC_L and MIC_R pick up ambient noise (SA1), process it, and generate a sound wave (SA2) with the same amplitude but opposite phase to the ambient noise. This wave is then output to the ear via SPK_L2 and SPK_R2. SA1 and SA2 cancel each other out, so the wearer cannot perceive external noise, thus achieving the noise reduction function.

[0017] In use, MIC_AUDIO picks up the wearer's voice (S1), the active noise reduction algorithm processes this voice, and generates a sound with the same spectrum as the voice but with temporal distortion. This sound is then output to the environment via SPK_L1 and SPK_R1, which is S2. S1 and S2 are superimposed. Since S2 is a chaotic and useless sound, it also masks the speaker's voice, thus achieving the purpose of preventing eavesdropping. MIC_L and MIC_R pick up ambient noise (SA1), process it, and generate a sound wave (SA2) with the same amplitude but opposite phase to the ambient noise. This is then output to the ear via SPK_L2 and SPK_R2. SA1 and SA2 cancel each other out, so the wearer cannot perceive external noise, thus achieving the noise reduction function.

[0018] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pair of earphones with anti-eavesdropping function, characterized in that, include: Active noise reduction algorithm, time reversal algorithm, MIC_AUDIO; Active noise reduction algorithms include: SPK_L1 and SPK_R1; Time reversal algorithms include SPK_L2 and SPK_R2.

2. The earphone with anti-eavesdropping function according to claim 1, characterized in that: The MIC_AUDIO picks up the wearer's voice (S1), the active noise reduction algorithm processes the sound, and generates a sound with the same spectrum as the spoken sound but with disordered timing. This sound is then output to the environment through SPK_L1 and SPK_R1, which is S2.

3. The earphone with anti-eavesdropping function according to claim 2, characterized in that: The sound mixing of S1 and S2 will mask the speaker's voice.

4. The earphone with anti-eavesdropping function according to claim 1, characterized in that, SPK_L1 and SPK_L2 are MIC_L, and SPK_R1 and SPK_R2 are MIC_R.

5. The earphone with anti-eavesdropping function according to claim 4, characterized in that: The MIC_L and MIC_R pick up ambient noise SA1, process it, and generate a sound wave SA2 with the same amplitude but opposite phase as the ambient noise. This sound wave is then output to the human ear through SPK_L2 and SPK_R2.

6. The earphone with anti-eavesdropping function according to claim 5, characterized in that: S1 and S2 cancel each other out when added together, so the person wearing the headphones cannot perceive external noise.

7. The earphone with anti-eavesdropping function according to claim 1, characterized in that: The headphones have a noise reduction of over 30dB, which can completely filter out interference sounds.

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