[Csnd] [semi-OT] Looking for sighted assistance: translating formulae to readable text
| Date | 2019-10-25 13:15 |
| From | "Jeanette C." |
| Subject | [Csnd] [semi-OT] Looking for sighted assistance: translating formulae to readable text |
Hey hey,
I am currently looking at modelling engine sounds. I have found a good
article, but can't read the formulae, a typical issue with PDFs.
Would someone perhaps help me and translate a few equations into something
like pseudo code or pseudo Tex?
After some of the equations variables are explained, it would be helpful to at
least have a clear-text list of the names so I can properly read the text
again.
Here's the article and relevant parts (I hope):
Link:
https://www.hindawi.com/journals/sv/2018/5209207/
Direct download of the PDF:
http://downloads.hindawi.com/journals/sv/2018/5209207.pdf
The following sections with the nubmered equations and figures are vital (I
think):
2. (Measurements of Acoustic Characteristics of Engine Sounds)
figure: 2(?)
2.1 (Spectral Characteristics of Engine Sounds)
eq.: 1
3.1 (Mechanical Sound Synthesis)
figure: 4
eq.: 2, 3 and 4
3.2 (Combustion Sound Synthesis)
figure: 5, 6(?)
eq.: 5
I'd be very grateful if someone could and would spare the time. If that
balances the scales either way: the resultant Csound code will be released
freely.
Best wishes and many thanks for reading this far,
Jeanette
--
* Website: http://juliencoder.de - for summer is a state of sound
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Then why do these tears come at night <3
(Britney Spears)
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| Date | 2019-10-25 15:20 |
| From | Victor Lazzarini |
| Subject | Re: [Csnd] [semi-OT] Looking for sighted assistance: translating formulae to readable text |
would latex do? Prof. Victor Lazzarini Maynooth University Ireland > On 25 Oct 2019, at 13:15, Jeanette C. |
| Date | 2019-10-25 16:33 |
| From | "Jeanette C." |
| Subject | Re: [Csnd] [semi-OT] Looking for sighted assistance: translating formulae to readable text |
Oct 25 2019, Victor Lazzarini has written:
> would latex do?
Yes, it would do very well.
...
>> Link:
>> https://www.hindawi.com/journals/sv/2018/5209207/
>> Direct download of the PDF:
>> http://downloads.hindawi.com/journals/sv/2018/5209207.pdf
>>
>> The following sections with the nubmered equations and figures are vital (I think):
>> 2. (Measurements of Acoustic Characteristics of Engine Sounds)
>> figure: 2(?)
>>
>> 2.1 (Spectral Characteristics of Engine Sounds)
>> eq.: 1
>>
>> 3.1 (Mechanical Sound Synthesis)
>> figure: 4
>> eq.: 2, 3 and 4
>>
>> 3.2 (Combustion Sound Synthesis)
>> figure: 5, 6(?)
>> eq.: 5
>>
>> I'd be very grateful if someone could and would spare the time. If that balances the scales either way: the resultant Csound code will be released freely.
>>
>> Best wishes and many thanks for reading this far,
>>
>> Jeanette
>>
>> --
>> * Website: http://juliencoder.de - for summer is a state of sound
>> * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
>> * SoundCloud: https://soundcloud.com/jeanette_c
>> * Twitter: https://twitter.com/jeanette_c_s
>> * Audiobombs: https://www.audiobombs.com/users/jeanette_c
>> * GitHub: https://github.com/jeanette-c
>>
>> If there's nothing missing in my life
>> Then why do these tears come at night <3
>> (Britney Spears)
>>
>> Csound mailing list
>> Csound@listserv.heanet.ie
>> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
>> Send bugs reports to
>> https://github.com/csound/csound/issues
>> Discussions of bugs and features can be posted here
>
> Csound mailing list
> Csound@listserv.heanet.ie
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> Send bugs reports to
> https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here
>
--
* Website: http://juliencoder.de - for summer is a state of sound
* Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
* SoundCloud: https://soundcloud.com/jeanette_c
* Twitter: https://twitter.com/jeanette_c_s
* Audiobombs: https://www.audiobombs.com/users/jeanette_c
* GitHub: https://github.com/jeanette-c
She's so lucky,
she's a star
But she cry, cry, cries in her lonely heart... <3
(Britney Spears)
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| Date | 2019-10-25 16:34 |
| From | Victor Lazzarini |
| Subject | Re: [Csnd] [semi-OT] Looking for sighted assistance: translating formulae to readable text |
Ok, I'll do it in a little while... Prof. Victor Lazzarini Maynooth University Ireland > On 25 Oct 2019, at 16:33, Jeanette C. |
| Date | 2019-10-25 16:53 |
| From | Victor Lazzarini |
| Subject | Re: [Csnd] [semi-OT] Looking for sighted assistance: translating formulae to readable text |
Here they go
Eq.1
f_0 = N \cdot \frac n 2 \cdot 60
Eq. 2
p_m (t) = \sum_{k=1}^K \left(a_k \cos\left(\frac {2\pi kf_0t} {N_m}\right) + b_k \sin\left(\frac {2\pi kf_0t} {N_m}\right)\right)
Eq. 3 (there are two)
a_k = \frac 1 m \sum_{m=1}^M \left(\frac 1 T \int_0^T p(t + (m-1)T)\cos \frac{2\pi kt} T dt\right)
and
b_k = \frac 1 m \sum_{m=1}^M \left(\frac 1 T \int_0^T p(t + (m-1)T)\sin \frac{2\pi kt} T dt\right)
Eq.4 (two again)
A_k = \sqrt{a_k^2 + b_k^2}
and
\phi_k = \tan^{-1} \frac {b_k} {a_k}
Eq. 5
p_c(t) = C \cdot M_f \cdot p_e(t) \cdot [p_m(t) + C_r \cdot M_f]
========================
Prof. Victor Lazzarini
Maynooth University
Ireland
> On 25 Oct 2019, at 13:15, Jeanette C. |
| Date | 2019-10-25 17:18 |
| From | "Jeanette C." |
| Subject | Re: [Csnd] [semi-OT] Looking for sighted assistance: translating formulae to readable text |
Hello Victor,
many, many thanks for that. I'll reread the appropriate sections again and see
how far this can take me.
Best wishes,
Jeanette
--
* Website: http://juliencoder.de - for summer is a state of sound
* Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
* SoundCloud: https://soundcloud.com/jeanette_c
* Twitter: https://twitter.com/jeanette_c_s
* Audiobombs: https://www.audiobombs.com/users/jeanette_c
* GitHub: https://github.com/jeanette-c
She's so lucky,
she's a star
But she cry, cry, cries in her lonely heart... <3
(Britney Spears)
Csound mailing list
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https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
Send bugs reports to
https://github.com/csound/csound/issues
Discussions of bugs and features can be posted here |