samples out of range using the api
| Date | 2017-02-21 14:25 |
| From | Natanael Mojica |
| Subject | samples out of range using the api |
Hi csounders. (below the full csd file)I have a trouble when using the csound API. I using the same csd file(demos from here http://freaknet.org/martin/audio/csound/ ) in both cases.. when using csound directly I dont need to do change on the file. and I dont get samples out of range, for example this : ... <CsInstruments> sr=44100 kr=4410 ksmps=10 nchnls=2 instr 2 ipch = cpspch(p5) imult = ((p6+1) / p6) * .5 iseed = (rnd(100)+100)/200 k2 expseg .0625, 15, .0625, 113, 3.75, 113, .03125, 15, .0625 k3 linseg 1, 240, 1, 16, 0 k1 phasor p7 * k2 k1 tablei 256 * k1 , 100, 0, 0, 1 krand randi 30000, p7 * 5, iseed krand = (krand + 30000) / 60000 a1 oscil p4 * imult * k1 * k3, ipch * p6, 1 outs a1 * sqrt(krand), a1 * (sqrt(1-krand)) ... but using the API taking samples from spout buffer, I get samples out of range, then I need to do: outs a1 * sqrt(krand)*.0001, a1 * (sqrt(1-krand))*.0001 And it salve the problem, the same for any csd file from the demos, using them for testing my aplication. so, when does csound perform a scaling on the samples? in the spout buffer or on the hardware buffer? another thing, when using csound directly I set -odac option. but when test my app I turn csound to silent using -n option. Is necesary to do change to the csd file when using the api? Thanks |
| Date | 2017-02-21 14:53 |
| From | Rory Walsh |
| Subject | Re: samples out of range using the api |
Make sure you scale everything by 0dbfs(). Use this function: Then divide the output of your spout buffer by the value it returns. On 21 February 2017 at 14:25, Natanael Mojica <neithanmo@gmail.com> wrote:
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| Date | 2017-02-21 16:08 |
| From | Natanael Mojica |
| Subject | Re: samples out of range using the api |
Thanks Roy.. I Will try it. On Feb 21, 2017 8:53 AM, "Rory Walsh" <rorywalsh@ear.ie> wrote:
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