Hello,

If I set 0dbfs = 8388608 and run the orc/sco below with the following command:

csound -A -o ampMapTest.aiff ampMapTest.orc ampMapTest.sco

and look at the waveform in Audacity I get one loud sine tone and one quiet sine tone.

If I add the -3 flag for 24bit, csound tells me there are no samples out of range, but when I look at the waveform in Audacity I see one distorted tone followed by one loud tone.

sndinfo and Audacity confirm that the audio file is 24 bit 96kHz.

Admittedly I'm using an old version of csound (4.23).

Am I missing something?

;;;;;;;;;;;;;;;;;;;;;;ampMapTest.orc;;;;;;;;;;;;;;;;;;;;;;;;;
sr = 96000
kr = 96000
nchnls = 1

0dbfs = 8388608

instr 1
    aSig oscil p4, 440, 1
    out aSig
endin
;;;;;;;;;;;;;;;;;;;;;;ampMapTest.orc;;;;;;;;;;;;;;;;;;;;;;;;;

;;;;;;;;;;;;;;;;;;;;;;ampMapTest.sco;;;;;;;;;;;;;;;;;;;;;;;;;
f1 0 16384 10 1

i1 0  3 8388608
i1 4  3 32767
e
;;;;;;;;;;;;;;;;;;;;;;ampMapTest.orc;;;;;;;;;;;;;;;;;;;;;;;;;


Using default language
read PEAK data:
creation time: Sun Sep  9 16:38:33 2007
CH 1: peak = 1.000000 at sample 70520: 0.7346 secs
ampMapTest.aiff: AIFF, 672000  samples, no looping
        AIFF soundfile, looping with modes 1, 0
        srate 96000, monaural, 16 bit shorts, 7.00 seconds
        headersiz 78, datasiz 1344000 (672000 sample frames)
LCAT-19:~/Desktop/noiseExperiments/oscScores bwillkie$ csound -3 -A -o ampMapTest.aiff ampMapTest.orc ampMapTest.sco 
Using default language
0dBFS level = 32767.0
Csound Version 4.23f03 (03/10/03)
orchname:  ampMapTest.orc
scorename: ampMapTest.sco
orch compiler:
12 lines read
        instr   1
sorting score ...
        ... done
Csound Version 4.23f03 (03/10/03)
graphics not supported on this terminal, ascii substituted
0dBFS level = 8388608.0
orch now loaded
audio buffered in 1024 sample-frame blocks
SFDIR undefined.  using current directory
writing 3072-byte blks of 24bit ints to ampMapTest.aiff
 (AIFF)
SECTION 1:
ftable 1:
ftable 1:       16384 points, scalemax 1.000

new alloc for instr 1:
B  0.000 ..  3.000 T  3.000 TT  3.000 M:8388608.0
B  3.000 ..  4.000 T  4.000 TT  4.000 M:      0.0
B  4.000 ..  7.000 T  7.000 TT  7.000 M:  32767.0
end of score.              overall amps:8388608.0
           overall samples out of range:        0
0 errors in performance
peak CH 1: 8388608.000000  (written: 1.000000) at 70520
657 3072-byte soundblks of 24bit ints written to ampMapTest.aiff (AIFF)