[Csnd] why I don't get "samples out of range"

Date	2012-08-05 14:54
From	Stefan Thomas
Subject	[Csnd] why I don't get "samples out of range"
	Dear community, I would like to unterstand why I don't get "samples out of range" in my example. I always thought that, when You set 0dbfs to 1 every amplitude that exceeds this value will be out of range. In my example I get (via the printks opcode) giamp = 1.586285 I would also expect csound complaining about "samples out of range" but there's nothing like that, which I don't understand.

Date	2012-08-05 15:00
From	peiman khosravi
Subject	Re: [Csnd] why I don't get "samples out of range"
	The problem must be elsewhere. Are you sure you're adding up the amplitudes for all the active instruments only, taking into consideration any envelope changes? For what you're doing I think it might be better to make a master meter. Add all the signal into a global bus and then output that to dac. You can also place a peak amp meter on this and print the output. P On 5 August 2012 14:54, Stefan Thomas <kontrapunktstefan@gmail.com> wrote: Dear community, I would like to unterstand why I don't get "samples out of range" in my example. I always thought that, when You set 0dbfs to 1 every amplitude that exceeds this value will be out of range. In my example I get (via the printks opcode) giamp = 1.586285 I would also expect csound complaining about "samples out of range" but there's nothing like that, which I don't understand.

Date	2012-08-05 15:10
From	Justin Smith
Subject	Re: [Csnd] why I don't get "samples out of range"
	easier: in the highest numbered instrument in your orchestra: al, ar monitor ; this grabs the total output sent by all previous (aka lower numbered) instruments then you can do something like: kl rms al kr rms ar but also, check your -m argument to the command line, if the argument is and odd number (bit 0 is set), it reports the exact amplitudes being output, and if bit 1 is set (they call this "adding 2 to the sum" in the manual) it will output out of range messages. I also like to set bit 7 (what the manual calls "adding 64 to the sum") in order to see messages in db rather than raw amps. On Sun, Aug 5, 2012 at 7:00 AM, peiman khosravi wrote: > The problem must be elsewhere. Are you sure you're adding up the amplitudes > for all the active instruments only, taking into consideration any envelope > changes? > > For what you're doing I think it might be better to make a master meter. Add > all the signal into a global bus and then output that to dac. You can also > place a peak amp meter on this and print the output. > > P > > On 5 August 2012 14:54, Stefan Thomas wrote: >> >> Dear community, >> I would like to unterstand why I don't get "samples out of range" in my >> example. >> I always thought that, when You set 0dbfs to 1 every amplitude that >> exceeds this value will be out of range. >> In my example I get (via the printks opcode) >> >> giamp = 1.586285 >> >> I would also expect csound complaining about "samples out of range" but >> there's nothing like that, which I don't understand. >> >> >

Date	2012-08-05 21:09
From	Stefan Thomas
Subject	Re: [Csnd] why I don't get "samples out of range"
	Dear Justin, thanks for Your proposals. I'm going to try it out, tomorrow (it's rather late now). 2012/8/5 Justin Smith <noisesmith@gmail.com> easier: in the highest numbered instrument in your orchestra: al, ar monitor ; this grabs the total output sent by all previous (aka lower numbered) instruments then you can do something like: kl rms al kr rms ar but also, check your -m argument to the command line, if the argument is and odd number (bit 0 is set), it reports the exact amplitudes being output, and if bit 1 is set (they call this "adding 2 to the sum" in the manual) it will output out of range messages. I also like to set bit 7 (what the manual calls "adding 64 to the sum") in order to see messages in db rather than raw amps. On Sun, Aug 5, 2012 at 7:00 AM, peiman khosravi <peimankhosravi@gmail.com> wrote: > The problem must be elsewhere. Are you sure you're adding up the amplitudes > for all the active instruments only, taking into consideration any envelope > changes? > > For what you're doing I think it might be better to make a master meter. Add > all the signal into a global bus and then output that to dac. You can also > place a peak amp meter on this and print the output. > > P > > On 5 August 2012 14:54, Stefan Thomas <kontrapunktstefan@gmail.com> wrote: >> >> Dear community, >> I would like to unterstand why I don't get "samples out of range" in my >> example. >> I always thought that, when You set 0dbfs to 1 every amplitude that >> exceeds this value will be out of range. >> In my example I get (via the printks opcode) >> >> giamp = 1.586285 >> >> I would also expect csound complaining about "samples out of range" but >> there's nothing like that, which I don't understand. >> >> > Send bugs reports to the Sourceforge bug tracker https://sourceforge.net/tracker/?group_id=81968&atid=564599 Discussions of bugs and features can be posted here To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"