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Electric guitar effects

Started by Amanda DiMaso ●November 9, 2005
Hello:
 
I have a Motorola DSP56367 processor. I wanted to know more about,
 
(1)  reverb algorithm in assembly language
 
(2) use of comb filters to create reverb
 
Please let me know if you have worked on creating sound effects with DSP , effect such as distortion, pitch blend , chorus ,, etc.
 
Thanks so much.
 DSP Student

Yahoo! FareChase - Search multiple travel sites in one click.

Reply by John Adamson ●November 10, 20052005-11-10
>>(2) use of comb filters to create reverb

If you have access to a good library, you might want to take a look at
"Musical Applications of Microprocessors" by Hal Chamberlin. The sections
on reverb & effects are short, but the author is very good at clear,
practical, explanations.

There's also the article "About This Reverberation Business" by James A.
Moorer, published in Computer Music Journal, Volume 3 #2, which you can
download at http://www.jamminpower.com/main/articles.jsp
(and thanks to your question, I now have an electronic copy as an alternate
to the faded photocopy I had in my files)

You may also want to read whatever you can on "convolution reverb".

John

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Hello:

I have a Motorola DSP56367 processor. I wanted to know more about,

(1) reverb algorithm in assembly language

(2) use of comb filters to create reverb

Please let me know if you have worked on creating sound effects with DSP ,
effect such as distortion, pitch blend , chorus ,, etc.

Thanks so much.
DSP Student ---------------------------------
Yahoo! FareChase - Search multiple travel sites in one click.


Reply by Kenneth Ciszewski ●November 10, 20052005-11-10
In the late 1980's/early 1990's there was a really great reverb implementation for DSP56000.  You might be able to find the assembly source files if you search the web. If not, let me know, I might still have them.
 
There was also an article in Dr. Dobbs Journal in the 1990's about using a PC to do audio effects. 

John Adamson <j...@hotmail.com> wrote:
>>(2) use of comb filters to create reverb

If you have access to a good library, you might want to take a look at
"Musical Applications of Microprocessors" by Hal Chamberlin.  The sections
on reverb & effects are short, but the author is very good at  clear,
practical, explanations.

There's also the article "About This Reverberation Business" by James A.
Moorer, published in Computer Music Journal, Volume 3 #2, which you can
download at http://www.jamminpower.com/main/articles.jsp
(and thanks to your question, I now have an electronic copy as an alternate
to the faded photocopy I had in my files)

You may also want to read whatever you can on "convolution reverb".

John

----Original Message Follows----
From: Amanda DiMaso <a...@yahoo.com>
To: m...@yahoogroups.com
Subject: [motoroladsp] Electric guitar effects
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Hello:

I have a Motorola DSP56367 processor. I wanted to know more about,

(1)  reverb algorithm in assembly language

(2) use of comb filters to create reverb

Please let me know if you have worked on creating sound effects with DSP ,
effect such as distortion, pitch blend , chorus ,, etc.

Thanks so much.
  DSP Student---------------------------------
  Yahoo! FareChase - Search multiple travel sites in one click.


Reply by Kenneth Ciszewski ●November 11, 20052005-11-11
There were also articles in the Journal of the Audio Engineering Society in 1997 and 1998 by John Dattorro. Kenneth Ciszewski <kenski@kens...> wrote:
In the late 1980's/early 1990's there was a really great reverb implementation for DSP56000. You might be able to find the assembly source files if you search the web. If not, let me know, I might still have them.

There was also an article in Dr. Dobbs Journal in the 1990's about using a PC to do audio effects.

John Adamson <johnpadamson@john...> wrote:
>>(2) use of comb filters to create reverb

If you have access to a good library, you might want to take a look at
"Musical Applications of Microprocessors" by Hal Chamberlin. The sections
on reverb & effects are short, but the author is very good at clear,
practical, explanations.

There's also the article "About This Reverberation Business" by James A.
Moorer, published in Computer Music Journal, Volume 3 #2, which you can
download at http://www.jamminpower.com/main/articles.jsp
(and thanks to your question, I now have an electronic copy as an alternate
to the faded photocopy I had in my files)

You may also want to read whatever you can on "convolution reverb".

John

----Original Message Follows----

Hello:

I have a Motorola DSP56367 processor. I wanted to know more about,

(1) reverb algorithm in assembly language

(2) use of comb filters to create reverb

Please let me know if you have worked on creating sound effects with DSP ,
effect such as distortion, pitch blend , chorus ,, etc.

Thanks so much.
DSP Student