nsfx

I'm a new Max/MSP user undertaking an educational project -- specifically, a granular mash-up type instrument. To start off, I'm trying to load a wav into a buffer and trigger 1 beat at a time according to a metro. For now the patch assumes the wav will have 4 beats. I'm doing this by loading a wav into a buffer~ and then driving a play~ with a line~. I advance to the next beat by adjusting the line~'s parameters. It seems to work okay except the last beat always comes out wrong. I think when I tell it to jump to back to 0 ms in the buffer, it plays the previous 3 beats quickly in reverse. I'm sure I could get around this somehow, but I feel as though I'm wading into a sea of unelegant programming. Is there another easier way I could do this?

http://web.njit.edu/~ams23/temp/psiker.mxb

Any suggestions or tips are greatly appreciated.

I'm a new Max/MSP user undertaking an educational project -- specifically, a granular mash-up type instrument.  To start off, I'm trying to load a wav into a buffer and trigger 1 beat at a time according to a metro.  For now the patch assumes the wav will have 4 beats.  I'm doing this by loading a wav into a buffer~ and then driving a play~ with a line~.  I advance to the next beat by adjusting the line~'s parameters.  It seems to work okay except the last beat always comes out wrong.  I think when I tell it to jump to back to 0 ms in the buffer, it plays the previous 3 beats quickly in reverse.  I'm sure I could get around this somehow, but I feel as though I'm wading into a sea of unelegant programming.  Is there another easier way I could do this?

line-and-play-for-playing-slices-of-a-buffer

a slightly different approach that might work well would be to use 

groove~ instead of play~. If you combine this with sfinfo~ so that you 

know the duration of the sample, and hence also can subdivide it into 

sections in terms of ms., you could dynamically set end point, set "loop 

0" (no looping), set section start point and trigger playback using a 

float to left inlet, and use sig~ 1 to drive it.

If you play around with the help patch for groove~, you will see that 

more or less all you need is already in there.

Generally I would recommend that you walk through the help patches for 

all of the buffer~- based MSP externals that are suggested by the "See 

Also" in the help file to see what they do and how they differ from each 

other. I still do that occasionally in order to decide which one will 

> I'm a new Max/MSP user undertaking an educational project -- specifically, a granular mash-up type instrument. To start off, I'm trying to load a wav into a buffer and trigger 1 beat at a time according to a metro. For now the patch assumes the wav will have 4 beats. I'm doing this by loading a wav into a buffer~ and then driving a play~ with a line~. I advance to the next beat by adjusting the line~'s parameters. It seems to work okay except the last beat always comes out wrong. I think when I tell it to jump to back to 0 ms in the buffer, it plays the previous 3 beats quickly in reverse. I'm sure I could get around this somehow, but I feel as though I'm wading into a sea of unelegant programming. Is there another easier way I could do this?

> Any suggestions or tips are greatly appreciated.

a slightly different approach that might work well would be to use 
groove~ instead of play~. If you combine this with sfinfo~ so that you 
know the duration of the sample, and hence also can subdivide it into 
sections in terms of ms., you could dynamically set end point, set "loop 
0" (no looping),  set section start point and trigger playback using a 
float to left inlet, and use sig~ 1 to drive it.

If you play around with the help patch for groove~, you will see that 
more or less all you need is already in there.

Generally I would recommend that you walk through the help patches for 
all of the buffer~- based MSP externals that are suggested by the "See 
Also" in the help file to see what they do and how they differ from each 
other. I still do that occasionally in order to decide which one will 
best fit the task at hand.

adam wrote:
> I'm a new Max/MSP user undertaking an educational project -- specifically, a granular mash-up type instrument.  To start off, I'm trying to load a wav into a buffer and trigger 1 beat at a time according to a metro.  For now the patch assumes the wav will have 4 beats.  I'm doing this by loading a wav into a buffer~ and then driving a play~ with a line~.  I advance to the next beat by adjusting the line~'s parameters.  It seems to work okay except the last beat always comes out wrong.  I think when I tell it to jump to back to 0 ms in the buffer, it plays the previous 3 beats quickly in reverse.  I'm sure I could get around this somehow, but I feel as though I'm wading into a sea of unelegant programming.  Is there another easier way I could do this?
>
> Here's my patch so far:
>
> http://web.njit.edu/~ams23/temp/psiker.mxb
>
> Any suggestions or tips are greatly appreciated.
>


I think when I tell it to jump to back to 0 ms in the buffer, it plays the previous 3 beats quickly in reverse. I'm sure I could get around this somehow, but I feel as though I'm wading into a sea of unelegant programming.

without looking at your patch, i would say that when you want

a thing to stop playing when you jump back, you have t

implement that yourself, should be simple - except that it

might click, but that could happen anyway and is not only

>>> [quote]
I think when I tell it to jump to back to 0 ms in the buffer, it plays the previous 3 beats quickly in reverse.  I'm sure I could get around this somehow, but I feel as though I'm wading into a sea of unelegant programming.
[/quote]

without looking at your patch, i would say that when you want
a thing to stop playing when you jump back, you have t
implement that yourself, should be simple - except that it
might click, but that could happen anyway and is not only
a result of using a message.


Line~ and play~ for playing slices of a buffer~