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This didn't make much sense to me redirecting to heart pulse, given that Square_wave and Sawtooth_wave go to entries on their waveforms. The Square_wave article wasn't clear about the concept of a pulse wave, so I just threw this in. I don't have a good source of info that would result in a readable entry, so I left it as a stub.
Davetron5000 13:49, 21 June 2006 (UTC)
I think adding frequency spectrum for this wave is good for adding. At Last ... ( talk) 10:19, 24 November 2016 (UTC)
Hyacinth had added a large paragraph on the sound of pulse waves. Usually if we have a point to illustrate, we'll throw in a referenced quote to support that point. In this case we just have back-to-back quotes and it is not clear what the point we're trying to make here is. ~ Kvng ( talk) 14:02, 10 May 2018 (UTC)
The Fourier series expansion looks strange. I would expect terms with increasing frequencies, multiples of the fundamental frequency. But the argument to the cosine term, which includes the time variable t, has no frequency. It can be rearranged as 2π(τ/T)nt, where (τ/T) is the dimensionless duty cycle, and n is a dimensionless index. So where is the frequency to be multiplied by t? Elektrobjørn ( talk) 09:19, 25 May 2021 (UTC) One day later: I corrected the formulas for the Fourier expansion, and changed the picture of the waveform to be symmetric around t=0. Elektrobjørn ( talk) 08:55, 26 May 2021 (UTC)
I think that in the Fourier series expansions, there's a factor of 2 shouldn't be there. Can anyone confirm that? — Preceding unsigned comment added by 80.178.116.1 ( talk) 14:43, 21 November 2021 (UTC)
Wikipedia already has an article for Pulse-width modulation and Pulse-amplitude modulation. So, I've trimmed this article down to only talk about the basic periodic pulse wave with a fixed duty cycle and amplitude. I'm only having mention of PWM & PAM in intro to say that they are modulating aspects of the pulse wave.
Thus, I've deleted the following text from this article's "Applications" section since it is out-of-scope:
In digital electronics, a digital signal is a pulse train (a pulse amplitude modulated signal), a sequence of fixed-width square wave electrical pulses or light pulses, each occupying one of two discrete levels of amplitude. [1] [2] These electronic pulse trains are typically generated by metal–oxide–semiconductor field-effect transistor (MOSFET) devices due to their rapid on–off electronic switching behavior, in contrast to BJT transistors which slowly generate signals more closely resembling sine waves. [3] Em3rgent0rdr ( talk) 21:57, 19 February 2024 (UTC)
References
Digital signals are fixed-width pulses, which occupy only one of two levels of amplitude.
![]() | This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||
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![]() | It is requested that one or more audio files be
included in this article to
improve its quality. Please see Wikipedia:Requested recordings for more on this request. |
This didn't make much sense to me redirecting to heart pulse, given that Square_wave and Sawtooth_wave go to entries on their waveforms. The Square_wave article wasn't clear about the concept of a pulse wave, so I just threw this in. I don't have a good source of info that would result in a readable entry, so I left it as a stub.
Davetron5000 13:49, 21 June 2006 (UTC)
I think adding frequency spectrum for this wave is good for adding. At Last ... ( talk) 10:19, 24 November 2016 (UTC)
Hyacinth had added a large paragraph on the sound of pulse waves. Usually if we have a point to illustrate, we'll throw in a referenced quote to support that point. In this case we just have back-to-back quotes and it is not clear what the point we're trying to make here is. ~ Kvng ( talk) 14:02, 10 May 2018 (UTC)
The Fourier series expansion looks strange. I would expect terms with increasing frequencies, multiples of the fundamental frequency. But the argument to the cosine term, which includes the time variable t, has no frequency. It can be rearranged as 2π(τ/T)nt, where (τ/T) is the dimensionless duty cycle, and n is a dimensionless index. So where is the frequency to be multiplied by t? Elektrobjørn ( talk) 09:19, 25 May 2021 (UTC) One day later: I corrected the formulas for the Fourier expansion, and changed the picture of the waveform to be symmetric around t=0. Elektrobjørn ( talk) 08:55, 26 May 2021 (UTC)
I think that in the Fourier series expansions, there's a factor of 2 shouldn't be there. Can anyone confirm that? — Preceding unsigned comment added by 80.178.116.1 ( talk) 14:43, 21 November 2021 (UTC)
Wikipedia already has an article for Pulse-width modulation and Pulse-amplitude modulation. So, I've trimmed this article down to only talk about the basic periodic pulse wave with a fixed duty cycle and amplitude. I'm only having mention of PWM & PAM in intro to say that they are modulating aspects of the pulse wave.
Thus, I've deleted the following text from this article's "Applications" section since it is out-of-scope:
In digital electronics, a digital signal is a pulse train (a pulse amplitude modulated signal), a sequence of fixed-width square wave electrical pulses or light pulses, each occupying one of two discrete levels of amplitude. [1] [2] These electronic pulse trains are typically generated by metal–oxide–semiconductor field-effect transistor (MOSFET) devices due to their rapid on–off electronic switching behavior, in contrast to BJT transistors which slowly generate signals more closely resembling sine waves. [3] Em3rgent0rdr ( talk) 21:57, 19 February 2024 (UTC)
References
Digital signals are fixed-width pulses, which occupy only one of two levels of amplitude.