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  2. Audio File Out CHOP

    Audio File Out CHOP

    Summary

    The Audio File Out CHOP saves an audio stream out to a file using a variety of different codecs.

    Currently supports .wav, .mp3, .aiff, and .ogg container formats.

    See also: Movie File Out TOP.

    PythonIcon.pngaudiofileoutCHOP_Class


    Parameters - Audio File Out Page

    File Type filetype - ⊞ - Select the file type (container) of the output file.
    • WAV wav - .wav file type. The audio codec can be chosen using the Codec parameter.
    • OGG ogg - .ogg file type. The audio codec is Vorbis. Vorbis compression will have gapless playback.
    • MP3 mp3 - .mp3 file type. The audio codec is MP3. MP3 compression will not have gapless playback. Vorbis (.ogg) is a good alternative for this.
    • AIFF aiff - .aiff file type. The audio codec is Uncompressed 16-bit (PCM).

    Unique Suffix uniquesuff - When enabled, me.fileSuffix will be a unique suffix when used in the file parameter.

    N n - When unique suffix is disabled, me.fileSuffix will simply contain the value of N, instead of being unique

    File file - Sets the path and filename of the audio file that is saved out. The file extension must match the file type parameter.

    Codec codec - ⊞ - Select the compression codec for the WAV file type.
    • Uncompressed 16-bit (PCM) pcm16 - Uncompressed audio (Pulse Code Modulation)
    • Uncompressed 24-bit (PCM) pcm24 - Uncompressed audio (Pulse Code Modulation)
    • Uncompressed 32-bit (PCM) pcm32 - Uncompressed audio (Pulse Code Modulation)

    Bit Rate bitrate - ⊞ - Selects the bit rate for the MP3 file type.
    • 96 kb/s b96 -
    • 128 kb/s b128 -
    • 192 kb/s b192 -
    • 256 kb/s b256 -
    • 320 kb/s b320 -

    Record record - When toggled on, it will open the audio file and begin recording. When toggled off, it will close the file and release the read/write lock.

    Pause pause - Pauses the recording of the audio to the audio file.


    Parameters - Common Page

    Time Slice timeslice - Turning this on forces the channels to be "Time Sliced". A Time Slice is the time between the last cook frame and the current cook frame.

    Scope scope - To determine which channels get affected, some CHOPs use a Scope string on the Common page.

    Sample Rate Match srselect - ⊞ - Handle cases where multiple input CHOPs' sample rates are different. When Resampling occurs, the curves are interpolated according to the Interpolation Method Option, or "Linear" if the Interpolate Options are not available.
    • Resample At First Input's Rate first - Use rate of first input to resample others.
    • Resample At Maximum Rate max - Resample to the highest sample rate.
    • Resample At Minimum Rate min - Resample to the lowest sample rate.
    • Error If Rates Differ err - Doesn't accept conflicting sample rates.

    Export Method exportmethod - ⊞ - This will determine how to connect the CHOP channel to the parameter. Refer to the Export article for more information.
    • DAT Table by Index datindex - Uses the docked DAT table and references the channel via the index of the channel in the CHOP.
    • DAT Table by Name datname - Uses the docked DAT table and references the channel via the name of the channel in the CHOP.
    • Channel Name is Path:Parameter autoname - The channel is the full destination of where to export to, such has geo1/transform1:tx.

    Export Root autoexportroot - This path points to the root node where all of the paths that exporting by Channel Name is Path:Parameter are relative to.

    Export Table exporttable - The DAT used to hold the export information when using the DAT Table Export Methods (See above).


    Operator Inputs

    • Input 0: -


    Info CHOP Channels

    Extra Information for the Audio File Out CHOP can be accessed via an Info CHOP.

    Specific Audio File Out CHOP Info Channels

    • last_samples_written -
    • total_samples_written -

    Common CHOP Info Channels

    • start - Start of the CHOP interval in samples.
    • length - Number of samples in the CHOP.
    • sample_rate - The samplerate of the channels in frames per second.
    • num_channels - Number of channels in the CHOP.
    • time_slice - 1 if CHOP is Time Slice enabled, 0 otherwise.
    • export_sernum - A count of how often the export connections have been updated.

    Common Operator Info Channels

    • total_cooks - Number of times the operator has cooked since the process started.
    • cook_time - Duration of the last cook in milliseconds.
    • cook_frame - Frame number when this operator was last cooked relative to the component timeline.
    • cook_abs_frame - Frame number when this operator was last cooked relative to the absolute time.
    • cook_start_time - Time in milliseconds at which the operator started cooking in the frame it was cooked.
    • cook_end_time - Time in milliseconds at which the operator finished cooking in the frame it was cooked.
    • cooked_this_frame - 1 if operator was cooked this frame.
    • warnings - Number of warnings in this operator if any.
    • errors - Number of errors in this operator if any.


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