Voice output device
专利汇可以提供Voice output device专利检索，专利查询，专利分析的服务。并且PURPOSE:To attain small size and large output by constituting the titled device by a pre-transmission line, comprising two series of a voice signal input section and a basic frequency signal oscillation section, a conversion section, an inversion conversion section, an amplifier section and an output section so as to decrease the apparent sensitivity of the microphone at a small signal level thereby preventing howling. CONSTITUTION:The pre-transmission line 1 consists of a microphone, a proper processing device and a basic frequency signal generating section and the frequency of the output signal of the basic frequency signal generating section is twice or over that of the voice signal and a sinusoidal or a cosine oscillator is used. A modulator section 2 is modulator and consists of a noninverting or inverting adder using an operational amplifier. An inverse conversion section 3 is a demodulator and consists of a diode, a capacitor and a resistor and has a low pass filter or the like for noise cut at the post-stage and an operational amplifier is used for the diode to attain sufficient demodulation even with a small output level. The amplifier 4 consists of the preamplifier and the main amplifier and the preamplifier acts like a low pass filter cutting off the high frequency in the demodulated signal and processes the voice signal as required. The output device is a speaker.，下面是Voice output device专利的具体信息内容。
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
| 一种基于模糊隶属函数的语音分离方法 | 2020-12-26 | 4 |
| 一种微电容测量方法及专用装置 | 2021-08-25 | 3 |
| 适用于高阶QAM的自适应均衡与载波恢复方法及其电路 | 2021-12-12 | 1 |
| 一种基于以太网的电能质量在线监测装置 | 2020-12-13 | 1 |
| 一种MEMS器件动态微弱电容检测电路 | 2021-06-11 | 0 |
| 电感测量方法、控制方法、电感测量装置及控制系统 | 2020-07-17 | 4 |
| 一种适用于在线动平衡的不平衡信号提取法 | 2021-01-24 | 1 |
| Device for reducing indoor stuffy noise | 2022-08-28 | 1 |
| Encoder | 2022-09-12 | 2 |
| System for measuring group delay in signal transmission | 2023-04-02 | 2 |
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