AmplitudeModulation
AmplitudeModulation[fc,fm,mi,dur]
creates a Sound object that is an amplitude-modulated sinusoid, having carrier and modulating frequencies fc and fm, measured in hertz, a modulation index of mi, and a duration of dur seconds.
AmplitudeModulation[fc,fm,mi,dur,RingModulation->True]
creates a ring-modulated sinusoid.
更多信息和选项
- To use AmplitudeModulation, you first need to load the Audio Package using Needs["Audio`"].
- Sounds created using amplitude modulation contain three frequencies: the carrier frequency, and the sum and difference of the carrier and modulating frequencies.
- The following options can be given:
-
DisplayFunction Identity function to apply to sound before returning it PlayRange {-1, 1} range of sound amplitude levels to include RingModulation False whether to use ring modulation SampleDepth 8 number of bits used to encode sound amplitude SampleRate 8192 sampling rate per second - The option RingModulation->True specifies that the Sound object created by AmplitudeModulation will contain only two frequencies: the sum and the difference of the carrier and modulating frequencies.
- The expression used by AmplitudeModulation is given by
. - The expression used by AmplitudeModulation with the option RingModulation->True is given by
. - The depth or intensity of the modulation is controlled by the modulation index mi.
- The carrier is said to be overmodulated when
. - The best way to understand the effect of mi is to try it out with different values, usually between 0.1 and 2.0.
文本
Wolfram Research (2007)，AmplitudeModulation，Wolfram 语言函数，https://reference.wolfram.com/language/Audio/ref/AmplitudeModulation.html.
CMS
Wolfram 语言. 2007. "AmplitudeModulation." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/Audio/ref/AmplitudeModulation.html.
APA
Wolfram 语言. (2007). AmplitudeModulation. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/Audio/ref/AmplitudeModulation.html 年