Method and system for improving indoor speech articulation

Abstract

The invention discloses a method for improving indoor speech articulation. The method comprises steps as follows: geometrical size of an interior building is acquired, and an indoor simulation model is established according to the geometrical size; a plurality of parameter evaluation points are selected from the indoor simulation model, and a plurality of articulation weak points are selected fromthe parameter evaluation points according to a preset articulation evaluation parameter calculation strategy; the articulation weak points are used as reference positions for indoor layout of diffusers and reflection materials; average reverberation time of the articulation weak points at an octave frequency band is calculated; sound absorption increment corresponding to the octave frequency bandis calculated according to preset target reverberation time of the octave frequency band and the average reverberation time; a sound absorption material is selected according to the sound absorptionincrement; and the sound absorption material is used for being arranged in a first preset position of the interior. The invention further discloses a system for improving the indoor speech articulation. With adoption of the embodiment, the indoor speech articulation can be effectively improved.

Description

technical field [0001] The invention relates to the technical fields of architectural acoustics and signal processing, in particular to a method and system for improving indoor speech clarity. Background technique [0002] The classroom is the main place for school teaching, and many classrooms have language intelligibility problems, especially in the middle and rear seats and large classrooms. The language intelligibility of the classroom will affect the quality of students' class. Low language intelligibility will lead to problems such as distraction and poor learning effect of students because they cannot hear the teacher's lecture clearly. The low language clarity in the classroom will make the teacher involuntarily increase the volume of lectures, which is easy to get tired and unfavorable to the health of the throat. The speech intelligibility of the classroom is mainly related to the sound pressure level of the sound source (such as the teacher lecturing), the distan...

AI Technical Summary

Problems solved by technology

However, in our country, there is basically no special design for improving classroom language clarity in school construction, and the relevant school management departments do not understand the factors that affect classroom language clarity. They think that this problem can be solved as long as they are equipped with microphones and speakers. It was found that this is not the case. While amplifying the volume of the teacher's lecture, the sound reinforcement equipment in the classroom will also amplify the background noise and reverberation sound. The sound energy ratio has not changed, so it cannot improve language clarity.

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