| 1. | As you all know , the normal noise threshold for private housing is 55 decibels 正如你们知道的,个人房子正常噪音为55分贝。 |
| 2. | A voltage signal tria ( tt / pw ) added by normal noise . is demonstrated for 2 - d dependence of the waveform on time and trials and 2 - d dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a random process including noise and signal 以加上准常态杂讯之三角波电压讯号为例,图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动,显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
| 3. | A voltage signal rect ( tt / pw ) multiplied by normal noise is demonstrated for 2 - d dependence of the waveform on time and trials and 2 - d dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a random process including noise and signal 以乘上准常态杂讯之方波电压讯号为例,图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动,显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
| 4. | A modulated signal of tria ( tt / pw ) added by a normal noise . is demonstrated for 2 - d dependence of the waveform on time and trials and 2 - d dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a random process including noise and signal 以三角波电压讯号加上准常态杂讯乘以无杂讯载波之调变讯号为例,图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动,显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
| 5. | A voltage signal cos ( 2 * pi * freq * tt ) , added by normal noise . is demonstrated for 2 - d dependence of the waveform on time and trials and 2 - d dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a random process including noise and signal 以加上准常态杂讯之弦波电压讯号为例,图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动,显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
| 6. | A voltage signal uexp ( tt / pw ) multiplied by normal noise is demonstrated for 2 - d dependence of the waveform on time and trials and 2 - d dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a random process including noise and signal 以乘上准常态杂讯之单边递减波电压讯号为例,图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动,显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
| 7. | A modulated signal of uexp ( tt / pw ) added by a normal noise . is demonstrated for 2 - d dependence of the waveform on time and trials and 2 - d dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a random process including noise and signal 以单边递减波电压讯号加上准常态杂讯乘以无杂讯载波之调变讯号为例,图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动,显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
| 8. | A voltage signal cos ( 2 * pi * freq * tt ) , freq = 2 ( mhz ) added by normal noise . is demonstrated for 2 - d dependence of the waveform on time and trials and 2 - d dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a random process including noise and signal 以加上准常态杂讯之弦波电压讯号为例,图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动,显示杂讯与讯号之随机过程在时域与频域之不同特性。 |