AM radio can be sent over larger distances, but the quality of the sound is not as good as a later kind of radio signal processing, called frequency modulation.
调幅广播可以发送更远的距离，但它的声音质量却不及后来一种被称为频率调制的无线电信号处理方式优越。
The system can issue a pure tone, tone twitter, narrowband noise and natural sound of the voice signal, and can adjust the loudness and frequency of the signals with some accuracy.
该系统能发出纯音、啭音、窄带噪声和自然声等声音信号，并可对信号进行一定精度的响度和频率调节。
The frequency of the sound wave is controlled by the feedback signal of the system.
声光晶体由行波场驱动，声场频率则由系统的反馈讯号控制。
The digital portion includes low-frequency video, the pulses that keep receivers synchronized with transmitters, and the audio signal for high-quality stereo sound.
数字部分包括低频视频(使接收机与发射机保持同步的脉冲)以及用于高质量立体声的音频信号。
First, Discuss the advantage and disadvantage of some methods of time-frequency analysis usually used in the field of signal processing on sound and vibration.
首先，对现阶段常用于声振信号分析领域研究的各种时频分析方法的优缺点进行了分析和比较。
Sound card oscilloscope software oscilloscope, signal generator, frequency meter, multimeter functions in the audio range can completely replace the equipment.
声卡示波器软件实现了示波器，信号发生器，频率计，万用表的功能，在音频范围内可完全替代上述仪器。
The tone regulating method includes the steps of: re-sampling the sound signal to be raised or fallen in tone in different sample frequency and outputting in original playing frequency;
一种音调调整方法与装置，本方法包括以下步骤：以不同取样频率对欲升降调的声信号重新取样，再将其以原播放频率输出；
Umbilical arterial Doppler spectrum were obtained by color Doppler ultrasound, then Doppler signal were transformed into computer through sound frequency, and fractal were calculated.
用彩色多普勒超声检测脐动脉并获得多普勒信号，将此信号以音频形式输入计算机中，对此信号进行处理并计算分数维。
The sound signal received and processed by the original sonar system is converted by comprehensive frequency spectrum and forms a digitized dynamic frequency-amplitude distribution curve.
原有声纳系统接收处理后的声音信号经过综合频谱转换后，形成数字化的动态频率-幅度分布曲线。
The high fidelity meaning is refers to the audio frequency electro-acoustic system and the equipment or the part maintains the sound signal original appearance ability.
高保真的意思是指音频电声系统及其设备或部件保持声音信号原来面貌的能力。
The utility model relates to a radio transmitter for low-resistance sound signal, which is used to convert audio signals into frequency modulated signals.
本实用新型是一种将音频信号转换成调频信号的发射装置。
The utility model relates to a radio transmitter for low-resistance sound signal, which is used to convert audio signals into frequency modulated signals.
本实用新型是一种将音频信号转换成调频信号的发射装置。
应用推荐