PERSONAL COLLAR-TYPE VOICE CONTROL SYSTEM THAT AUTOMATICALLY NORMALIZES THE TEACHER'S VOICE.

Abstract

The invention relates to a sound control system that automatically normalizes the teacher's voice in educational institutions according to the classroom noise level, eliminating the need for the teacher to raise their voice.

Description

1 TARIFF PERSONAL COLLAR-STYLE VOICE THAT AUTOMATICALLY NORMALIZES THE TEACHER'S VOICE. CONTROL SYSTEM Technical Area 5 The invention enables the automatic adjustment of a teacher's voice in educational institutions according to the classroom noise level. and the need for the teacher to raise their voice, which allows it to be normalized. It is related to a personal lapel-type voice control system that eliminates the need for such a system. State of the Art In educational settings, teachers' voices should be amplified to every point in the classroom. The ability to communicate effectively is critical for learning efficiency, especially in crowded environments. in classrooms, high-ceilinged lecture halls, or acoustically poor environments 15 It is becoming difficult for teachers to make their voices heard at a natural level. Therefore... Teachers often have to raise their voices during lessons, This situation leads to both physical fatigue and deterioration of vocal health. Current technology aims to mitigate this problem through various lavalier microphones and portable audio devices. Amplifiers and classroom audio distribution systems have been developed. However, current solutions are insufficient. It operates on a constant amplification principle, ignoring classroom noise variability. and offers structures that cannot optimize the teacher's voice in real time. Current lapel microphones and portable audio amplifiers only capture the teacher's voice. raising the noise level to a certain level, adapting to sudden changes in classroom noise levels 25 It is unable to provide this. These devices independently detect ambient noise. Because it does not contain a sensor or microphone unit, the teacher's voice and background noise are interspersed. The ratio between them cannot be kept constant. This situation occurs when the noise level increases. The teacher reduces the audibility of their voice, and when the noise level decreases, it becomes unnecessary. This causes a very loud noise level. Also, in current systems, 30 Since the amplification used is constant, the teacher's natural speech intensity varies. changes (speaking in a low voice, sudden raising of the voice, shifts in emphasis) from the listener's perspective This creates an unbalanced sound experience. In addition, most classroom speaker systems The time feedback problem is evident. When the teacher approaches the speaker or the classroom When located in certain areas, a microphone-speaker loop occurs, causing an annoying 35 Noises occur. Current systems actively prevent this feedback. 2 Because there are no adaptive algorithms, the sound quality changes as the teacher moves. can malfunction. Furthermore, the wireless transmission technologies used are often high-frequency. It creates a delay, which is between the teacher's speech and the sound coming from the speaker. This causes a difference to occur. This delay has a distracting effect on the teacher. It creates. 5 Another significant shortcoming of current solutions is that the teacher's voice is obscured by the classroom acoustics. The problem is the lack of a digital signal processing structure that optimizes according to these conditions. Classroom occupancy, student mobility, furniture arrangement, and the echo characteristics of the environment. Variables like these directly affect sound propagation. However, known systems cannot detect these 10 a control that analyzes variables or adapts the sound output accordingly It does not offer a mechanism. Therefore, the teacher's voice is excessive in some areas. The minimum requirement is high, but it may be insufficient in some areas. Current lapel microphones, as of the known state of the art, are portable audio 15 amplifiers and classroom sound distribution systems adjust the teacher's voice to the classroom noise level. Dual-microphone noise reduction that enables real-time normalization. It lacks an advanced structure that performs the analysis and actively prevents feedback. Therefore, teachers have to raise their voices, classroom noise Sound intelligibility fluctuates depending on changes in level, and the current 20 These systems restrict the teacher's freedom of movement. Therefore, the teacher It automatically adjusts its sound to the classroom noise, operates with low latency, and has a back-to-back function. A portable device is needed that prevents the feeding from happening. In conclusion, the existence of the above problems and the inadequacy of the current solutions are relevant to the 25 This has made it necessary to make improvements in the technical field. Purpose of the Invention The present invention eliminates the aforementioned disadvantages and contributes to the relevant technical field in 30 years. Personal lapel collar speaker that automatically normalizes the teacher's voice, bringing new advantages. It is related to the control system. The main purpose of the invention is to reduce the level of teacher voice noise in classrooms within educational institutions. It automatically normalizes according to the teacher's voice and increases the volume. 35 The goal is to create a personal lapel-type voice control system that eliminates the need for one. 3 The invention aims to create a system that automatically adjusts the teacher's voice to the classroom noise level, and teacher voice intelligibility with real-time adaptive gain control The goal is to create a system that optimizes. Another purpose of the invention is to separate the teacher's voice from background noise using a dual 5. Microphone-based noise difference analysis and sudden changes in classroom noise levels The goal is to create a system that automatically stabilizes the opposing teacher's voice. Another aim of the invention is to create an adaptive signal that prevents feedback (howling) from occurring. The goal is to create a system with processing algorithms. 10 Another purpose of the invention is to transmit the teacher's voice to classroom speakers with low latency. The goal is to create a wireless system. Another aim of the invention is to enable the teacher to recognize natural variations in speech intensity. The goal is to create a system that provides a stable sound level by balancing the noise level. Another aim of the invention is to adapt the classroom acoustics according to the digital signal processing module. The goal is to create a system that optimizes sound output. Another purpose of the invention is to provide constant sound regardless of the teacher's movement. The goal is to create a portable system that offers quality. Another purpose of the invention is to enable the teacher's voice to adapt to varying environmental conditions. The goal is to create a system that can automatically adapt its processing behavior. 25 Another aim of the invention is to reduce the need for teachers to raise their voices, thus improving sound quality. The goal is to create a system that protects health. Another aim of the invention is to improve information in the learning environment through improvements in sound transmission. the continuity of transmission and cognitive abilities depending on the students' level of hearing from the teacher The goal is to create a system that increases accessibility. To fulfill all the purposes mentioned above and those that can be derived from the detailed explanation. The invention is based on the principle that the teacher's voice in educational institutions should be 35 times the classroom noise level. 4 automatic normalization and raising the teacher's voice It is a voice control system that eliminates the need for it, - collar module placed close to the teacher's chest area, - Front microphone located inside the lapel module that collects the teacher's voice. unit, 5 - located within the collar module, which measures classroom background noise. microphone unit, - located within the lapel module, containing the front and rear microphone units. teacher's voice and ambient noise according to the sound signal from the unit Digital signal processing that applies adaptive gain control by comparison 10 module, - located within the collar module and processed by the digital signal processing module A wireless transmission unit that transmits a processed and normalized audio signal. - the audio signal located within the classroom and transmitted via a wireless transmission unit The receiver module, which analyzes and converts the audio into a suitable format for output, is 15. - normalized data located within the class and obtained by the receiving module, and By distributing the audio signal throughout the classroom, the risk of feedback is reduced, enabling students enabling the teacher to hear the voice at a similar level and clarity from every point. speaker output unit, - located inside the collar module and managing the collar module's energy consumption 20 power management unit - located within the collar module and the operating mode of the voice control system. by including a control and adjustment unit that enables its control and management It is related. The structural and characteristic features and all the advantages of the invention are given in the figures below. And thanks to the detailed explanation written with references to these figures, it becomes clearer. This will be understood as such. Therefore, the evaluation should also include these forms and detailed explanations. This should be done taking that into consideration. Figures that will help understand the invention. Figure 1: Schematic diagram of the voice control system that is the subject of the invention. 35 Explanation of Part References 10. Collar module 20. Front microphone unit 30. Rear microphone unit 5 40. Digital signal processing module 41. Adaptive gain control unit 42. Dynamic range compression unit 43. Feedback prevention unit 50. Wireless transmission unit 10 60. Receiver module 70. Speaker output unit 80. Power management unit 90. Control and adjustment unit Detailed Description of the Invention This detailed description outlines the preferred alternatives to the voice control system that is the subject of this invention. purely for the purpose of better understanding the subject and without any limiting influence. It is explained in a way that will not create. 20 Figure 1 shows the schematic diagram of the voice control system that is the subject of the invention. Accordingly, In its most basic form, the sound control system is located near the teacher's chest. a collar module (10) is placed on the collar module (10) which collects the teacher's voice microphone unit (20), lapel module (10) measures classroom background noise 25 sound from microphone unit (30), front microphone unit (20) and rear microphone unit (30) Adaptive gain is determined by comparing the teacher's voice with ambient noise according to the signal. Digital signal processing module (40) which implements the control, digital signal processing module (40) a wireless transmission unit that transmits the audio signal processed and normalized by (50), decodes the audio signal transmitted by the wireless transmission unit (50) and outputs 30 audio signals. The receiver module (60) converts the data obtained by the receiver module (60) into a suitable format. normalized audio signal with reduced feedback risk distributed throughout the classroom. by distributing the teacher's voice so that students can hear it at a similar level and with similar clarity from every point. The speaker output unit (70) that enables hearing, the energy consumption of the collar module (10) The power management unit (80) that manages the operating regime of the voice control system and 35 It includes a control and adjustment unit (90) that enables it to be controlled. 6 Within the scope of the invention, the collar module attached to the teacher's clothing (10) is the subject of the invention. It is the basic carrier unit of the control system. On the collar module (10) front microphone unit (20) which collects the teacher's voice and classroom background noise The measuring rear microphone unit (30) is located. The lapel module (10) is placed on the teacher's chest. By placing it in a location close to the area, it provides both access to the teacher's voice and the classroom environment. It ensures that the relevant acoustic data is perceived at an appropriate level. During the teacher's speech, the front microphone was directed towards the teacher's voice. Unit (20) collects the sound signal coming directly from the teacher's mouth. At the same time, The rear microphone unit (30) is located on the part of the lapel module facing the outside environment. 10 It also detects classroom background noise. Thus, the system, on the one hand, targets the sound... The teacher's voice, which is the source, and the ambient noise are transmitted through separate channels. It obtains. Audio signals produced by the front microphone unit (20) and the rear microphone unit (30), 15 The signal is transmitted to the digital signal processing module (40) located inside the collar module (10). The adaptive gain control unit (41) located inside the digital signal processing module (40), By comparing the teacher's voice signal with the ambient noise signal, the teacher's voice... the actual gain value required to achieve the targeted level of intelligibility It determines the time frame. Thus, even if classroom noise increases, the teacher's voice remains at 20°C. Its relative level is maintained. Dynamic range compression unit located within the digital signal processing module (40) (42), by balancing the sudden level changes in the teacher's voice, very loud This prevents the parts from being disturbing and also ensures that the low-level parts are 25. This ensures that it is audible enough. Feedback prevention unit (43) located inside the digital signal processing module (40) howling effects may originate from the loudspeaker output unit (70) detecting and making phase, frequency, or gain-based corrections on the signal 30 By implementing this, it prevents the formation of these undesirable acoustic loops. The audio signal processed and normalized by the digital signal processing module (40), The data is transmitted to the wireless transmission unit (50) located inside the collar module (10). The wireless transmission unit (50) uses a suitable wireless communication protocol to process this 35 It transmits the audio signal to the receiver module (60) located inside the classroom. 7 Module (60) decodes the wirelessly received audio signal and converts it into audio output. It converts to the format. The audio signal obtained by the receiver module (60) is output to the speaker located in the classroom. It is transmitted to the unit (70). The speaker output unit (70) is normalized and returns 5 By distributing the sound signal, which reduces the risk of interference, throughout the classroom, students interact with the teacher. It ensures that the sound is heard at a similar level and with similar clarity from every point. Thus the teacher can achieve consistent sound transmission throughout the classroom without having to raise their voice. It reaches. The power management unit (80) located inside the collar module (10) of the collar module (10) It meets the energy needs. The power management unit (80) optimizes energy consumption. by increasing the portable usage time of the collar module (10). The 15th point of interaction for the user is located within the Collar module (10). Control and adjustment unit (90), basic operating parameters of the sound control system It allows configuration. Through the control and adjustment unit (90), for example target sound level, specific modes (silent, normal, high noise mode), wireless connection status or collar module (10) on / off functions It can be managed. Thus, the teacher can control the system's behavior when needed. It can be adjusted to suit the usage scenario. The sound control system subject to the invention is the front microphone unit located on the lapel module (10). (20) and rear microphone unit (30), digital signal processing module (40), wireless transmission unit (50), receiver module (60), speaker output unit (70), power management unit (80) and control and 25 The adjustment unit (90) works together to ensure that the teacher's voice is stable despite the classroom noise, communicated to students in an understandable and feedback-free manner. It provides.

Claims

8 REQUESTS 1. In educational institutions, the teacher's voice can be automatically adjusted according to the classroom noise level. and the need for the teacher to raise their voice, which allows it to be normalized. It is a voice control system that eliminates the need for voice control, and its feature is; 5 - collar placed close to the teacher's chest area module (10), - located within the collar module (10) and collecting the teacher's voice microphone unit (20), - located within the collar module (10) and the classroom background noise 10 measuring rear microphone unit (30), - located inside the lapel module (10) and the front microphone unit (20) and the rear teacher's voice according to the sound signal from the microphone unit (30) Adaptive gain control by comparing ambient noise. digital signal processing module (40), 15 - located inside the collar module (10) and the digital signal processing module (40) wireless transmitter that transmits the audio signal processed and normalized by transmission unit (50), - sound located in the classroom and transmitted via wireless transmission unit (50) receiver 20 that decodes the signal and converts it into a format suitable for audio output module (60), - normalized located within the class and obtained by the receiver module (60) a filtered and feedback-risk-reduced audio signal transmitted throughout the classroom by distributing the sound so that students can hear the teacher's voice at a similar level from every point. and speaker output unit (70) which enables hearing with clarity, 25 - located inside the collar module (10) and the energy of the collar module (10) power management unit (80) that manages consumption, - located inside the collar module (10) and the operation of the voice control system control and adjustment that enables the control and management of the regime It contains unit (90). 30 2. A sound control system that conforms to Claim 1, and its feature is the aforementioned digital signal. processing module (40) of the teacher voice signal and ambient noise signal by comparing, the teacher's voice to the targeted level of intelligibility 35 that determines the required earnings value in real time to reach it It includes an adaptive gain control unit (41). 9 3. A sound control system that conforms to Claim 1, and whose feature is the aforementioned digital signal. processing module (40), sudden level changes in teacher voice by balancing, preventing overly loud parts from becoming disturbing. and dynamics that ensure the low-level parts are sufficiently audible. It contains a range compression unit (42). 5 4. A sound control system that complies with Claim 1, and whose feature is the aforementioned digital signal. the feedback from the processing module (40) originating from the speaker output unit (70) Detecting howling effects and changing the phase, frequency, or signal. By applying gain-based corrections, 10 unwanted acoustic loops can be eliminated. It contains a feedback prevention unit (43) which prevents the formation of feedback.

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