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File channel node

Reads in channel and audio files for use by chops.

This chop reads in channel and audio files for use by chops.

Valid Formats

The types of files that can be read into chops include:

.chan

Raw ascii channel files; a row of numbers per frame.

.bchan

Raw PRISMS/Houdini binary channel files.

.clip .bclip

Houdini native chop clip files.

.chn .bchn

Houdini channel segment files.

.aif .aiff .aifc .au .sf .snd .wav

Audio files.

The same files can be output from the menu on the chop tile by selecting “Save Data Channels”. For a complete listing of all valid formats for chops, see the Formats section.

Other Input Devices

For Midi files (.mid or .midi), see the MIDI In CHOP. Some other input devices, (e.g. Puppetworks) can be read with the Pipe In CHOP.

Users can extend the file formats that are read/written by the File chop through the chop io and CLIPio files in $HFS/houdini. Use the clchan and clchn programs as examples of the input/output needed.

Parameters

Channel File

The name of the file to load. The button beside the string field brings up a file browser.

Name Options

Allows you to change the way the channels are named.

Use Names In File

Uses the channel names stored in the file. If the format does not support names (ie. sound files), then chan0, chan1, chan2, etc. is used.

Use New Names

The channel names are manually specified by the name parameter below.

Use Filename

The filename, minus the extension and path, is used. If more than 1 channel is in the file, the channels will be numbered to keep the names unique.

Name

The new name(s) of the file’s channels.

Rate Options

Allows you to change the sample rate of the file.

No Change

Use the file’s sample rate.

Override

Change the file’s sample rate to a new rate.

Resample

Change the file’s sample rate to a new rate and keep the time range constant.

Sample Rate

The new sample rate to use if Override or Resample is selected.

Extend Left

The extend condition before the channel’s beginning.

Extend Right

The extend condition after the channel’s ending.

Default Value

The value of the default value extend condition.