Any thoughts that could help is welcome.

Any other comments on improvements is welcome also!

I will try to send only to one channel on dac, and see if it does a change.

Thanks for the suggestions!

Thomas

....dont know what to look for now. I think I try another phone/tablet.

Hmmm......another strange thing is that the sound is not loud, if I set the
phone to 50% the phone signal is loud and clear, but my app is barely
heard

However, I changed the wav files that was loaded in patch into mono instead of stereo and it seemed to make a change!

But, Im maybe getting crazy after listening on the sounds, I imagine I hear a straight attack on the sounds some time and another time there is a "longer" attack.

/Thomas

If not, my advice is to start deleting (in a new file) bits of the patch one by one and testing it, until you find the minimum configuration that displays the behaviour you're describing. Is it the table playback that is failing? Can you get a simple [osc~]--[dac~] configuration to generate sound? Once you've narrowed it down, maybe you can share your patch and then we'll be able to help.

Thanks for your response. The patch IS working in PureData-editor
and on my mobile thru libpd, However on my mobile I get some
unwanted behavior of the sound (see earlier posts). Correct me if
I am wrong, but if I get sound from patch/libpd the dsp must be
turned on? Or?

/Thomas

Do you use mobmuplat, pd-party, scene-player or your own code to load and init the patch ? I think some of those init the dsp and some don't.

Anyhow you can always use in your patch to activate dsp.
[loadbang]
|
[; pd dsp 1; (

Did you try normalizing your samples on import ? read -resize -normalize.

When on mobile I often use a soft clipping abstraction before the output, somehting like [tanh~] that you can probably find easily on this forum.

There is also an abstraction called [e_agc] in the rjlib : https://github.com/rjdj/rjlib/tree/master/rj
it's an automatic gain control, it could help.

I am using my "own" code...from Peter Brinkmanns book "Making Musical Apps".

Hmmm intresting! -normalize have I not used yet. Will check it out.

Soft clipping abstraction - I am aware of soft clipping, but what is soft clipping abstraction??

tanh~ - is this part of "standard" puredata (not extended)?
My editor couldnt find it.....

Very interesting input! Thank you Berenger!

Also, the samples do look quite low level, so as @Berenger said...using the -normalize switch with each "read" will help the volume by making the sample as loud as possible without distortion....
ALSO...... maybe you should post your original question here........ http://stackoverflow.com/questions/tagged/libpd?sort=newest&pagesize=30
David.

you can do one with expr~ : [expr~ tanh($v1)]

or you can use table lookup : https://github.com/chr15m/blockhead/blob/master/e_tanh.pd

I am not using AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK, not what I know.
Should I? ....woav, found a lot info about it on Google, need to read, will be back.

The -normalize switch is set, but I dont know if it did any change, hard to tell.

click download as zip and checkout the help patch, it shows the effect of tanh~ at high volumes by drawing the signal in a table.

a soft clipper is like clip~ but with rounded 'edges' : with clip you cut clean everything that over 1 and below -1 (for instance) with a soft clipper when you reach those maximums softly with a little interpolation. It's like a limiter with a knee.

BTW did you try with headphones on and do you have the same issue with headphones ?

I aware that you don't do algorave music but this could be of interest to you too :
https://mccormick.cx/news/entries/heuristic-for-algorave-mastering

a soft clipper is like clip~ but with rounded 'edges' : with clip you cut clean everything that over 1 and below -1 (for instance) with a soft clipper when you reach those maximums softly with a little interpolation. It's like a limiter with a knee.

Aah now we are talking! Limiter I know!

BTW did you try with headphones on and do you have the same issue with headphones ?

I tried with headphones and I think it was not the same, so it is something with the output to the speaker....

I also made normalization on the wavs in my soundeditor and removed the -normalize in pd patch. Now the sound is a bit higher in volume, I dont need to put the output on phone more than ca 50% to hear it clear.....we are making progress!