Audio switcher of switching is listened to multi -sound -source intelligence

• Main Authors: ZHOU BOTAO, LIANG ZENGYIN, JIN HAOXUAN, ZHANG HONGKUAN, SONG JIEJUN, SHI LIUSHENG, ZHENG XIAOPING, FENG LIQIONG, HU QUAN
• Format: Patent
• Language: Chinese; English
• Published: 06.07.2018
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

The utility model relates to an audio switcher of switching is listened to multi -sound -source intelligence adopts the detection module who has subtracter, comparator to realize listening of audio signal, the audio frequency switching module that the adoption has the NMOS geminate transistors of N channel realizes power amplifier audio signal's switch and switches the function, adopt MCU to carryout state analysis to sampled signal, the intelligence of carrying out the sound source is switched, has abandoned mechanical switch or relay mode in the past, has realized the automated inspection and the switching of audio frequency completely through the circuit, have with low costs, long service life, characteristics that intelligent degree is high. 本实用新型所得到的多音源智能侦测切换的音频切换器，采用具有减法器、比较器的检测模块来实现音频信号的侦测；采用具有N沟道的NMOS对管的音频切换模块实现功放音频信号的开关及切换功能；采用MCU对采样信号进行状态分析，进行音源的智能切换，摒弃了以往的机械开关或继电器模式，完全通过电路实现了音频的自动检测及切换，具有成本低，使用寿命长，智能化程度高的特点。