Hearing protection method during use of interactive electronic whiteboard

Abstract

The invention discloses a hearing protection method during use of an interactive electronic whiteboard, which plays a role in protecting the hearing of a speaker and comprises the following steps of: 1, arranging muffling horns around the electronic whiteboard: arranging the muffling horns (1) on two sides of the bottom of the electronic whiteboard, and enabling the muffling horns (1) to face upwards; the silencing horns (2) are arranged on two sides of the top of the electronic whiteboard and have downward angles; the silencing horns (3) are arranged on the left side and the right side of the electronic whiteboard and have inward angles; the silencing horns (4) are arranged on the two sides of the top of the electronic whiteboard and have upward angles; sound waves emitted by the silencing horns are converged in the activity range of a speaker in front of the electronic whiteboard after being directly irradiated or reflected; and step 2, adjusting the audio phase and the volume of the silencing loudspeaker, so that the activity range of the speaker in front of the electronic whiteboard counteracts the audio output of the electronic whiteboard.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic whiteboards, and in particular refers to a hearing protection method when using an interactive electronic whiteboard. Background Art

[0002] In the current interactive electronic tablet usage scenarios, in order to ensure that the target audience, such as the classroom or conference room, can hear the content accurately and clearly, a larger speaker playback power is required. However, speakers usually stand relatively close to the interactive electronic whiteboard, and a larger playback volume is likely to damage the speaker's hearing. Summary of the invention

[0003] The main purpose of the present invention is to provide a hearing protection method when using an interactive electronic whiteboard, solve the problems existing in the prior art, and protect the hearing of the speaker.

[0004] In order to achieve the above object, the solution of the present invention is: A method for hearing protection when using an interactive whiteboard, comprising: Step 1: Install several silencer speakers around the electronic whiteboard according to the following positions: 1.1 The muffler speakers① are installed on both sides of the bottom of the electronic whiteboard and face upward. The sound wave emission angle forms an angle with the front of the electronic whiteboard and makes the sound waves converge in the speaker's activity range in front of the electronic whiteboard; 1.2 The muffler speakers ② are installed on both sides of the top of the electronic whiteboard and face downward. The sound wave emission angle forms an angle with the front of the electronic whiteboard and makes the sound waves converge in the speaker's activity range in front of the electronic whiteboard; 1.3 The muffler speakers ③ are installed on the left and right sides of the electronic whiteboard and face inwards. The sound wave emission angle forms an angle with the front of the electronic whiteboard and makes the sound waves converge in the speaker's activity range in front of the electronic whiteboard; 1.4 The muffler speakers ④ are installed on both sides of the top of the electronic whiteboard and face upward. The sound wave emission angle forms an angle with the front of the electronic whiteboard. After being reflected by the top plane, they converge in the speaker's activity range in front of the electronic whiteboard. Step 2: By adjusting the audio phase and volume of the muffler speakers ①②③④, the speaker's activity range in front of the electronic whiteboard can offset the audio output of the electronic whiteboard.

[0005] In step 1, the height at which the sound waves converge is set to 1.7±0.1 m, which is consistent with the height of a normal person.

[0006] The step 2 specifically includes: 2.1 The normal audio stream output by the electronic whiteboard is transmitted to the normal audio power amplifier circuit and the audio processing circuit respectively. The former transfers the normal audio stream to the broadcasting speaker of the electronic whiteboard for output, while the latter converts the normal audio stream into a silenced audio stream through the audio algorithm circuit, and then transfers it to the silencer speaker for output; 2.2 The sound pickup device on the speaker collects the audio output by the broadcasting speaker and the silencer speaker at the same time, and the feedback audio formed after the two cancel each other out re-enters the audio processing circuit; the audio processing circuit judges the feedback audio to determine whether it is within the preset threshold range. If so, the audio phase and volume of the silencer speaker will no longer be adjusted, otherwise it returns to 2.1.

[0007] Preferably, a position sensor or a distance sensor is provided on the front of the electronic whiteboard to detect the speaker's position in front of the electronic whiteboard or the distance from the electronic whiteboard, and the audio phase and volume of the silencer speakers provided on the left and right sides of the electronic whiteboard are proportionally increased or decreased according to the distance parameter.

[0008] Preferably, a parameter adjustment device is arranged on the speaker, and the speaker can freely adjust the frequency phase and volume of each muffler speaker according to the actual feeling of the ear.

[0009] After adopting the above technical solution, the present invention has the following technical effects: The present invention arranges silencer speakers at specific angles at several special positions of the electronic whiteboard, so that silencer audio can be emitted around the electronic whiteboard to offset the audio output of the electronic whiteboard itself, thereby avoiding affecting the speaker's hearing due to being too close to the electronic whiteboard and playing a role in hearing protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a flow chart of a specific embodiment of the present invention.

[0011] Figure 2 The figure is a schematic diagram of the position of the muffler speaker according to a specific embodiment of the present invention.

[0012] Figure 3 It is a schematic diagram of the height and angle of the muffler speaker according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0013] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0014] refer to Figure 1 As shown, the present invention discloses a hearing protection method when using an interactive electronic whiteboard, comprising: Step 1: See Figure 2 , 3, set up several silencer speakers around the electronic whiteboard according to the following positions: 1.1 The muffler speakers① are installed on both sides of the bottom of the electronic whiteboard and face upward. The sound wave emission angle forms an angle with the front of the electronic whiteboard and makes the sound waves converge in the speaker's activity range in front of the electronic whiteboard; 1.2 The muffler speakers ② are installed on both sides of the top of the electronic whiteboard and face downward. The sound wave emission angle forms an angle with the front of the electronic whiteboard and makes the sound waves converge in the speaker's activity range in front of the electronic whiteboard; 1.3 The muffler speakers ③ are installed on the left and right sides of the electronic whiteboard and face inwards. The sound wave emission angle forms an angle with the front of the electronic whiteboard and makes the sound waves converge in the speaker's activity range in front of the electronic whiteboard; 1.4 The muffler speakers ④ are installed on both sides of the top of the electronic whiteboard and face upward. The sound wave emission angle forms an angle with the front of the electronic whiteboard. After being reflected by the top plane (such as the ceiling), they converge in the speaker's activity range in front of the electronic whiteboard. Step 2: By adjusting the audio phase and volume of the silencer speakers ①②③④, the speaker's activity range in front of the electronic whiteboard can offset the audio output of the electronic whiteboard, thereby making the offsetting effect of the silencer speakers reach an appropriate level, which can not only protect the speaker's hearing, but also will not affect the normal audience in the distance, thus maintaining the remote listening effect.

[0015] Through the above scheme, the present invention sets silencer speakers at specific angles at several special positions of the electronic whiteboard, so that silencer audio can be emitted around the electronic whiteboard to offset the audio output of the electronic whiteboard itself, thereby avoiding affecting the speaker's hearing due to being too close to the electronic whiteboard, thereby playing a role in hearing protection.

[0016] Specific embodiments of the present invention are shown below.

[0017] In the above step 1, the height at which the sound waves converge is set to 1.7±0.1m, which is consistent with the height of a normal person.

[0018] The above step 2 is specifically: 2.1 See also Figure 1 The normal audio stream output by the electronic whiteboard is transmitted to the normal audio power amplifier circuit and the audio processing circuit respectively. The former transfers the normal audio stream to the broadcasting speaker of the electronic whiteboard for output, while the latter converts the normal audio stream into a silenced audio stream through the audio algorithm circuit, and then transfers it to the silencer speaker for output; 2.2 The sound pickup device on the speaker collects the audio output by the broadcasting speaker and the silencer speaker at the same time, and the feedback audio formed after the two cancel each other out re-enters the audio processing circuit; the audio processing circuit judges the feedback audio to determine whether it is within the preset threshold range. If so, the audio phase and volume of the silencer speaker will no longer be adjusted, otherwise it returns to 2.1.

[0019] Furthermore, a position sensor or distance sensor is set on the front of the electronic whiteboard to detect the speaker's position in front of the electronic whiteboard or the distance from the electronic whiteboard, and the audio phase and volume of the silencer speakers set on the left and right sides of the electronic whiteboard are proportionally increased or decreased according to the distance parameter.

[0020] At the same time, a parameter adjustment device is configured on the speaker, so that the speaker can freely adjust the frequency phase and volume of each silencer speaker according to the actual feeling of the ear, which is more flexible.

[0021] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A hearing protection method when using an interactive electronic whiteboard, characterized by comprising: Step 1: Install several silencer speakers around the electronic whiteboard according to the following positions: 1.1 The muffler speakers① are installed on both sides of the bottom of the electronic whiteboard and face upward. The sound wave emission angle forms an angle with the front of the electronic whiteboard and makes the sound waves converge in the speaker's activity range in front of the electronic whiteboard; 1.2 The muffler speakers ② are installed on both sides of the top of the electronic whiteboard and face downward. The sound wave emission angle forms an angle with the front of the electronic whiteboard and makes the sound waves converge in the speaker's activity range in front of the electronic whiteboard; 1.3 The muffler speakers ③ are installed on the left and right sides of the electronic whiteboard and face inwards. The sound wave emission angle forms an angle with the front of the electronic whiteboard and makes the sound waves converge in the speaker's activity range in front of the electronic whiteboard; 1.4 The muffler speakers ④ are installed on both sides of the top of the electronic whiteboard and face upward. The sound wave emission angle forms an angle with the front of the electronic whiteboard. After being reflected by the top plane, they converge in the speaker's activity range in front of the electronic whiteboard. Step 2: By adjusting the audio phase and volume of the muffler speakers ①②③④, the speaker's activity range in front of the electronic whiteboard can offset the audio output of the electronic whiteboard.

2. The hearing protection method when using an interactive whiteboard as claimed in claim 1, characterized in that: In step 1, the height at which the sound waves converge is set to 1.7±0.1 m, which is consistent with the height of a normal person.

3. The hearing protection method when using an interactive whiteboard as claimed in claim 1, characterized in that The step 2 specifically includes: 2.1 The normal audio stream output by the electronic whiteboard is transmitted to the normal audio power amplifier circuit and the audio processing circuit respectively. The former transfers the normal audio stream to the broadcasting speaker of the electronic whiteboard for output, while the latter converts the normal audio stream into a silenced audio stream through the audio algorithm circuit, and then transfers it to the silencer speaker for output; 2.2 The sound pickup device on the speaker collects the audio output by the broadcasting speaker and the silencer speaker at the same time, and the feedback audio formed after the two cancel each other out re-enters the audio processing circuit; the audio processing circuit judges the feedback audio to determine whether it is within the preset threshold range. If so, the audio phase and volume of the silencer speaker will no longer be adjusted, otherwise it returns to 2.

1.

4. The hearing protection method when using an interactive whiteboard as claimed in claim 3, characterized in that: A position sensor or distance sensor is set on the front of the electronic whiteboard to detect the position of the speaker in front of the electronic whiteboard or the distance from the electronic whiteboard, and the audio phase and volume of the silencer speakers set on the left and right sides of the electronic whiteboard are proportionally increased or decreased according to the distance parameter.

5. The hearing protection method when using an interactive whiteboard as claimed in claim 3, characterized in that: A parameter adjustment device is arranged on the speaker, and the speaker can freely adjust the frequency phase and volume of each muffler speaker according to the actual feeling of the ear.

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