The role of howling suppression in the WTM2101 chip

The principle of producing feedback is that when a microphone and a speaker are used simultaneously, the sound signal captured by the microphone is amplified by the speaker and then output again, forming a feedback loop. Due to the existence of the feedback loop, some specific frequencies of the sound signal can become very strong after multiple amplifications, forming a howling noise.The principle of howling suppression is to use digital signal processing technology to monitor the audio input and output signals in real-time, and identify and eliminate signals that may cause howling. Specifically, the howling suppression algorithm will perform frequency analysis on the input and output signals, and when the strength of the signal in a specific frequency range exceeds a certain threshold, it will recognize that there is howling noise. Then, the howling suppression algorithm will use a certain algorithm model to eliminate or reduce the signals that may cause howling, thereby eliminating howling noise.WTM2101 uses a neural network model and filtering method for howling suppression. Specifically, WTM2101 analyzes the frequency characteristics of the input and output signals, and eliminates the howling signal according to the trained algorithm model. In this way, WTM2101 can significantly reduce howling noise and improve communication quality.In audio devices such as two-way radios, WTM2101 can be used for howling suppression, noise reduction, and other functions to improve speech recognition accuracy and communication quality. In addition, WTM2101 also supports voice enhancement, echo cancellation, and other functions, further improving the performance of audio devices.Voice enhancement can enhance the human voice signal, improve the clarity and audibility of the speech. In noisy environments, such as in wind, traffic, crowds, and other noisy environments, the human voice signal is easily masked or drowned out, making it difficult for the listener to hear the other party's speech content. By using the voice enhancement function, the human voice signal can be enhanced, the speech signal can be highlighted, and the clarity and audibility of the conversation can be improved, thereby better performing voice communication.In summary, WTM2101 is a system-on-chip that has multiple functions such as howling suppression, noise reduction, voice enhancement, etc., and can be used in audio devices such as two-way radios to improve communication quality and user experience. It has been applied in Audio devices such as hearing aids ,Intercoms and so on.