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convolverPipe nPartitions nTuningRigour fAttenuationDB nFilterLengths MajorFormatIn
MinorFormatIn MajorFormatOut MinorFormatOut config.txt|IR.wav
convolverPipe convolves the standard input
stdin to the standard output stdout using the specified
impulse response (IR) filter.
It uses the following parameters
- nPartitions:
- 0 for overlap-save, or the number of partitions to be used
- nTuningRigour:
- Tuning rigour: 0-4 (Estimate, Measure, Patient, Exhaustive, or Take
1 minute)
- fAttenuationDB:
- The attenuation to be applied, in dB. Use the estimated, or the (ultra conservative)
peak value
- nFilterLengths:
- The number of filter lengths to be processed at a time
- MajorFormat:
-
One of the following. The specified value will be over-ridden by the actual
for input file format, unless RAW is selected.
| WAV |
Microsoft WAV format (little endian). |
| AIFF |
Apple/SGI AIFF format (big endian). |
| AU |
Sun/NeXT AU format (big endian). |
| RAW |
RAW PCM data. |
| PAF |
Ensoniq PARIS file format. |
| SVX |
Amiga IFF / SVX8 / SV16 format. |
| NIST |
Sphere NIST format. |
| VOC |
VOC files. |
| IRCAM |
Berkeley/IRCAM/CARL |
| W64 |
Sonic Foundry's 64 bit RIFF/WAV |
| MAT4 |
Matlab (tm) V4.2 / GNU Octave 2.0 |
| MAT5 |
Matlab (tm) V5.0 / GNU Octave 2.1 |
| PVF |
Portable Voice Format |
| XI |
Fasttracker 2 Extended Instrument |
| HTK |
HMM Tool Kit format |
| SDS |
Midi Sample Dump Standard |
| AVR |
Audio Visual Research |
| WAVEX |
MS WAVE with WAVEFORMATEX |
| SD2 |
Sound Designer 2 |
| FLAC |
FLAC lossless file format |
| CAF |
Core Audio File format |
- MinorFormat:
-
| PCM_S8 |
Signed 8 bit data |
| PCM_16 |
Signed 16 bit data |
| PCM_24 |
Signed 24 bit data |
| PCM_32 |
Signed 32 bit data |
| |
|
| PCM_U8 |
Unsigned 8 bit data (WAV and RAW only) |
| |
|
| FLOAT |
32 bit float data |
| DOUBLE |
64 bit float data |
| |
|
| ULAW |
U-Law encoded. |
| ALAW |
A-Law encoded. |
| IMA_ADPCM |
IMA ADPCM. |
| MS_ADPCM |
Microsoft ADPCM. |
| |
|
| GSM610 |
GSM 6.10 encoding. |
| VOX_ADPCM |
Oki Dialogic ADPCM encoding. |
| |
|
| G721_32 |
32kbs G721 ADPCM encoding. |
| G723_24 |
24kbs G723 ADPCM encoding. |
| G723_40 |
40kbs G723 ADPCM encoding. |
| |
|
| DWVW_12 |
12 bit Delta Width Variable Word encoding |
| DWVW_16 |
16 bit Delta Width Variable Word encoding |
| DWVW_24 |
24 bit Delta Width Variable Word encoding |
| DWVW_N |
N bit Delta Width Variable Word encoding |
| |
|
| DPCM_8 |
8 bit differential PCM (XI only) |
| DPCM_16 |
16 bit differential PCM (XI only) |
- config.txt or IR.wav:
- a config text file specifying a single filter path or a sound file to be
used as a filter
These parameters are described more fully on the usage
page.
Example usage: setting convolverPipe for use with SlimServer/SqueezeCenter
These instructions assume that you have
Slimserver 6.x or 7.x
installed and that you will be using it to playback
Flac, APE or MP3 files .
I am grateful to Dino Nuhagic for providing them.
Step 1
- Copy custom-convert.conf
to C:\Program Files\SlimServer\server (for Slimserver
6.x) or C:\Program Files\SqueezeCenter\server (for
SqueezeCenter 7.x). The file contains:
flc flc * *
[flac] -dcs --skip=$START$ --until=$END$ -- $FILE$ | "C:\Program Files\Convolver\Convolver\convolverpipe.exe" 2 1 -6 1 WAV PCM_16 RAW PCM_24 "C:\Impulses\yourfilter.wav" | [flac] -cs --totally-silent --compression-level-0 --endian little --sign signed --channels 2 --bps 24 --sample-rate 44100 -
mp3 flc * *
[lame] --mp3input --decode -t --silent $FILE$ - | "C:\Program Files\Convolver\Convolver\convolverpipe.exe" 2 1 -6 1 RAW PCM_16 RAW PCM_24 "C:\Impulses\yourfilter.wav" | [flac] -cs --totally-silent --compression-level-0 --endian little --sign signed --channels 2 --bps 24 --sample-rate 44100 -
ape flc * *
[mac] $FILE$ - -d | "C:\Program Files\Convolver\Convolver\convolverpipe.exe" 2 1 -6 1 WAV PCM_16 RAW PCM_24 "C:\Impulses\yourfilter.wav" | [flac] -cs --totally-silent --compression-level-0 --endian little --sign signed --channels 2 --bps 24 --sample-rate 44100 -
Edit custom-convert.conf to reflect
your own environment. In particular,
-
C:\Impulses\yourfilter.wav
should be the path to the stereo filter that you wish to use. Alternatively you
could use a config.txt file to specify your stereo
filter(s).
-
C:\Program Files\Convolver\Convolver\convolverPipe.exe
is the path to your convolverPipe.exe. For example
on 64bit OS it would be C:\Program Files (x86)\Convolver\Convolver\convolverPipe.exe
-
Do not change the [flac], it is an internal variable.
-
If your output device does not support 24-bit samples and
you want to use 16-bit samples instead, change the RAW PCM_24
and --bps 24 parameters in the specification:
flc flc * *
[flac] -dcs --skip=$START$ --until=$END$ -- $FILE$ | "C:\Program Files\Convolver\Convolver\convolverpipe.exe" 2 1 -6 1 WAV PCM_16 RAW PCM_16 "C:\Impulses\yourfilter.wav" | [flac] -cs --totally-silent --compression-level-0 --endian little --sign signed --channels 2 --bps 16 --sample-rate 44100 -
Step 2
- Turn off SlimServer/SqueezeCenter by using the taskbar icon or (more brutally)
end task in the Task Manager.
- Then restart it after it has completely shut down.
- Open Slimserver and navigate to Server Settings |
File Types. (The location of these settings is in
Settings | Advanced | File Types). Depending what you want to
convolve untick all the file format settings next to the Flac, MP3 or APE
rows. Then set them to these accordingly:
- Flac - (flac/flac)
- MP3 - (lame/flac)
- APE - (mac/flac)
- That's it.
- If you do not see the ConvolverPipe running in
the Task Manager while playing back your music, or there is no sound, then
check your File Type settings and the parameters in
custom-convert.conf.
- Make sure you restart the Server every time you change the
custom-convert.conf file.
|
Convolver 
