Composers Desktop Project Forum

Thank you Simon!

is this different from version 7? If yes, is there a changelog file available that could indicate the changes done to the sources?
Thank you for making this available and for letting us know.

best, Peter

Thanks again Richard,
the literal prefix worked of course.

pvoc synth somefile.ana -fsynthesizedFloat.wav

I am wondering if it is writing a floating point wav file though. When I inspect the file propoerties using the Unix program sndfile-info it looks like a 16bit file with a max amplitude of 0dBFS, or see the output of sox(i) below.

$ sndfile-info synthesizedFloat.wav

Version : libsndfile-1.0.25

========================================
File : synthesizedFloat.wav
Length : 1752656
RIFF : 1752648
WAVE
fmt  : 16
  Format        : 0x1 => WAVE_FORMAT_PCM
  Channels      : 1
  Sample Rate   : 44100
  Block Align   : 2
  Bit Width     : 16
  Bytes/sec     : 88200
PEAK : 16
  version    : 1
  time stamp : 1458596576
    Ch   Position       Value
     0   46526          1
cue  : 28
  Count : 1
   Cue ID : 1718183539  Pos :     0  Chunk : data  Chk Start : 0  Blk Start : 0  Offset :     0
LIST : 2016
  adtl
    note : 2004
data : 1750528
End

----------------------------------------
Sample Rate : 44100
Frames      : 875264
Channels    : 1
Format      : 0x00010002
Sections    : 1
Seekable    : TRUE
Duration    : 00:00:19.847
Signal Max  : 32767 (-0.00 dB)

------------------------------------------------------------------------------------------------------------------------------------------------------------

Or using sox (called as "soxi" to give info on the file header):

$ soxi synthesizedFloat.wav

Input File     : 'synthesizedFloat.wav'
Channels       : 1
Sample Rate    : 44100
Precision      : 16-bit
Duration       : 00:00:19.85 = 875264 samples = 1488.54 CDDA sectors
File Size      : 1.75M
Bit Rate       : 706k
Sample Encoding: 16-bit Signed Integer PCM

Am I understanding or doing something wrong? Shouldn't it be a 24 or 32bit floating point wav?

Thank you so much!

best, Peter

Robert,

thank you so much for your detailed reply and for outlining the respective features/limitations of the various programs. I will try to find a combination or other workaround that allows what I have in mind, or - change my mind and do things differently.

again, much appreciated, and with kindest regards
Peter

Hi dear fellow,

After having exposed a specfile to various spectral domain operations I want to convert it to the time domain on the unix command line using
 pvoc synth.
I am getting a warning that my levels are too hot, and some samples were clipped. pvoc synth informs me of the gain correction factor I need to apply to the specfile in order to normalize it, which I would do using
 spec gain
My question is, how could I normalize a specfile in the frequency domain anyway, before having to call pvoc synth, so that I can do it in a script without user interaction? Is there a simple way to normalize a specfile?

Thank you for all ideas!
best, Peter

Hi,

I am trying to work through the Tutorial Workshops, and would like to do so using the command line CDP programs. I am wanting to do this because it fits my style of doing/documenting things much better, and because I am on linux and dont want to run a GUI.
I am wondering if there is any documentation with regard to the Tutorial Workshop of how all of the examples could have been done using the command line?

Thank you for any pointers!
best, Peter

Hi list,

Is there a way to have pitches in a bpf rather than frequencies? Or are
there means of converting (midi)pitches to Hz? dB to linear amplitude?

cheers, P

Hi list,

I do wonder what would be the best way to insert a soundfile's length
as a parameter in a script file automatically? Is there a way to do with a CDP
program what I have so far achieved on unix using sox(i)?:
      extend zigzag 1 infile outfile 0 `soxi -D infile` 60 1

So I'd need a cdp binary that returns the length of a soundfile in seconds, and only that.
Does anyone know of such a program?

thank you all,
P